MCC10002 8586 Drive Components Catalog Section I r9 WEBcadena Silencisa

8/6/2019 MCC10002 8586 Drive Components Catalog Section I r9 WEBcadena Silencisa

1/35I-1

HV DRIVEADVANTAGES

Morse HV Drives provide the Drive Designer with a new concept in the transmission of power for high speed, highload applications. Proven in a wide range of applications from high production automobiles to custom-designedood control pumps. HV Drives offer opportunity for exibility, compactness, weight saving, and economy.

Morse HV drives

HV Drives offer these design advantages:

Fewer shafts and bearings than required for gears. Lighter loads on shaft bearings. Greater degree of elasticity than is available with gears, which helps to "cushion" the drive. Center distance is less critical, and more exible than with gears. Gives long life on xed centers . . usually eliminates need for adjustment. Loading between shafts on drive is compressive permitting the use of smaller bearings

and lighter housing sections and materials.

design advantages

results... less weight, space, noise ... and less cost for parts and assembly.

High Speed Performance

High HorsepowerSmall Space

Smooth

Quiet

design features


2/35I-2

HV DRIVEDESIGN

HV is a proven transmission drive with a design and capabilit y entirely unique from the usual chain drive which

combines the smoothness of a belt drive with the strength, compactness, economy, and long service life of

a steel chain.

The chain assembly is composed of a series of inverted tooth steel links, laced in alternate sections across

the width of the chain. It is assembled with two steel pins having the same cross-section geometry, one calledthe pin and the other the rocker, which form the articulating link joint between the link sections. See page I-8

for chain dimensions.

What is HV?

The link design in the original HV pitches - 3/4, 1, 1 1 /2 and 2 inch (Fig. 1)

has been tested in practice and proven for many years. The link crotch is

located slightly above the line of pull and all corners are rounded to minimize

the possibility of stress risers and to help provide maximum performance on

high load industrial application.

With the introduction of 3/8 and 1/2 inch pitch chains (Fig. 2). Morse

engineers developed a new link contour for increased speed requirements.

This design for the two smaller pitches locates the link crotch below the line

of pull. Photo-elastic studies of various link shapes and aperture positions

produced the design with the lowest level of stress concentration. In

addition, other research studies provided the results for proper metallurgy,toe length, back height, and pressure angle to achieve maximum load carrying

capacity and high speed performance.

Carefully controlled shot-peening of the links gives them a uniform, matte

gray nish and results in the highest level of link fatigue resistance. Another

reason for the HV high load performance.

HV link

Fig. 1 1 1/2 and 2 inch Pitches

Fig. 2 3/8, 1/2, 3/4 and 1 inch Pitches

1 1/2 and 2 inch Pitches

3/8, 1/2, 3/4 and 1 inch Pitches


3/35I-3

HV DRIVEDESIGN

The concentric pin and rocker joint is used in all pitches of HV chain. This

joint (Fig. 3) in combination with the involute sprocket tooth design

reduces chordal action to a minimum. The HV chain joint consists of a pin

and rocker, each with identical cross-sections and concentric radii. In the

process of the chain engaging sprocket teeth, the curved surfaces roll on

one another thus reducing sliding friction and joint galling. Before the chain

engages the sprocket teeth, the contact point of the HV pin and rocker

remains below the pitch line (Fig. 4).

As the chain engages the sprocket teeth, the contact point moves

upward (Fig. 5) and the pitch of the chain elongates. The actual amount

of pitch elongation is that required for the chain to wrap the sprocket

along the pitch line.

concentric pin and rocker joint

The third criteria for the success of HV is the mating sprockets which

complete the drive.

The involute tooth form differing from the straight sided teeth of

conventional silent chain sprockets is designed for smooth engagement

of the chain with the sprocket teeth. All HV sprockets are top-hobbed and

the teeth heat treated for tough wear resistant sur faces. Unlike the single

tooth engagement of spur gears, many teeth share the load of a HV drive.

This load sharing of the sprocket teeth results in low stresses, less wear,

and long sprocket life.

HV sprockets

The compatible design of HV links, joints, and sprockets reduces the detrimental effects of chordal action to a minimum,

the chordal action of conventional chain drives is the vibratory motion caused by the rise and fall of the chain as it engages

sprocket teeth. This motion causes vibration and limits high speed load carrying capability. Of all types of chains, HVoperates most efciently at all speeds because chordal action is reduced to a minimum.

Figure 6 shows how the HV chain enters approximately tangent to the pitch circle of the sprocket and maintains this

position as it travels around the sprocket. This smooth HV engagement permits high speed capabilities with maximum

efciency and quietness.

chordal action

Fig. 3

Fig. 4

Fig. 5


4/35I-4

HV DRIVEADVANTAGES

The HV link design, compensating pin and rocker joint and the involute hobbed

sprockets add up to . .

You get more with HV!

HIGH SPEED PERFORMANCE

Normal operating range from 3,000 to 7,000 FPM with higherspeed capability under special conditions.

HIGH HORSEPOWER IN A NARROW WIDTHHV transmits more horsepower per width than any other chain or belt

with range from low to several thousand horsepower.

SMOOTH PERFORMANCEThe rolling action of chain joints and smooth chain-sprocket

engagement does not induce vibrations.

HIGH EFFICIENCYUp to 99.7% efciency means power loss is minimal.

QUIET-NOISELESS OPERATIONHV is the most quiet drive on high speed applications.

SEVEN good reasons to use HV in your design!When gear trains of two or more meshes are needed to achieve center distance

requirementsHV transfer cases provide weight and cost savings because:

1. FEWER SHAFTSand Bearings are required.

2. LIGHTER LOADSon Shaft Bearings.

3. CHAIN BEARING LOADSare compressive, placing case incompression. Gear forces are outward subjecting case to more stress.

4. ELASTICITY OF HV CHAIN accommodates normal thermalexpansion, which helps "cushion" the drive.

5. CENTER DISTANCE IS LESS CRITICALandmore exible than required by gear mesh

6. HV CASES ARE LIGHTERand the

7. SIMPLIFIED DESIGNresults in a positive cost saving.

3/8, 1/2, 3/4 and 1 inch Pitches

High Speed Performance

High HorsepowerSmall Space

Smooth

Quiet

design features


5/35I-5

HV DRIVECOMPARISONS

The comparative rating curves show graphically the area of HV superiority over

other types of chain and positive drive belts. The shaded area indicates that the

capacity of HV far surpasses that of other power transmission drives because of its ...

LOAD CARRYING CAPACITY

SMOOTHNESS

HIGH SPEED PERFORMANCE

QUIETNESS

power comparison with other drives

horsepower capacity comparable drives

HORSEPOWERPERINCHOFWIDTH

DRIVE SPEED FEET PER MINUTE

C Silent Chain (MORSE)1/2 Pitch, 5/8 Wide

B

ANSI American National Standards Institute

RMA Rubber Manufacturers Association

#40 Roller Chain (ANSI)1/2 Pitch, One Strand

D Timing Belt (RMA)1/2 Pitch, 5/8 Wide

HV EXCLUSIVE

0

15

30

45

60

75

90

105

120

1000 2000 3000 4000 5000 6000 7000 8000

A HV Chain1/2 Pitch, 5/8 Wide

Consider the comparisons below. Higher and lower ratings and/or speed capabilitiesare possible with other pitches and widths

Chain orBelt from

Above Graph

PeakHP

Peakfeet/

Minute

horsepowerPer $

Quiteness Smoothness Flexibility Compactness

A (HV) 112 6,675 # 1 # 1 # 1 # 1 # 1

B (Roller Chain) 30 1,225 # 2 # 3 # 3 # 1 # 2

C (Silent Chain) 50 5,230 # 3 # 2 # 2 # 1 # 3

D (Timing Belt) 14 7,768 # 4 # 2 # 2 # 2 # 4


6/35I-6

HV DRIVEAPPLICATIONS

Photographs below and on the following page are

examples of HV packaged drives, custom

designed to meet particular space, speed and

load requirements. HV packaged drives offer the designer. . .

package HV drives

DESIGN SIMPLICITY

QUIET OPERATION

CASE COMPACTNESS

HIGH SPEED CAPABILITY

CENTER DISTANCE FLEXIBILITY

SMOOTH POWER TRANSFER

Power from a 125 HP, 3500 RPM electric motor is transmitted througha HV transfer case with self-contained lubrication system to a centrifugalblower at 3100 RPM over a 34 inch horizontal center distance. This driveoperates 24 hours a day to provide smooth, quiet, maintenance freeoperation in a critical power plant application.

Centrifugal Blower Drive

Power from an auxiliary 465 HP rear of cab mounted dieselengine is directed downward through a two stage HVreduction unit with 4.85 to 1 total ratio to enable a drive shaftto pass forward under the cab to a snow auger and blower

assembly. The characteristics of HV drives are particularlysuited to this application because of their ability to transmitpower smoothly in a minimum of space and absorb the heavyshocks encountered in highway snow removal.

Highway Snow Blower Drive

Power from a 1200 RPM natural gas engine is transmitted continuouslythru a HV speed increaser with an integral lubrication system. Theoutput of the case drives a centrifugal compressor absorbing 282 HP at3600 RPM. A Morse radial coupling connection on the input side of the

case dampens engine torsional vibrations. The HV drive is quiet, highlyefcient and allows for convenient layout of engine and compressor.

Centrifugal Compressor Drive


7/35I-7

HV DRIVEAPPLICATIONS

package HV drives

Power from V-8 engine is transmittedthrough a pair of HV packaged drivesto provide full torque power take-off ata 1.24 to 1 reduction ratio for drivingdischarge water pumps.

HV drive was selected because of lownoise level, compact design, and highefciency.

Fire TruckPump Drive

The output from a 45 HP air-cooledgasoline engine is reduced from 4400RPM to 2750 RPM to drive the propeller ofa low draft swamp boat. This applicationof a HV chain case resulted in increasedpropulsive efciency through the use of alarger diameter, slower turning propellerwhich also contributed to reducedoperating noise level.

Swamp Boat Drive

The combined power from two 500 HPautomotive V-8 engines is transmittedthru a dual ratio HV drive to a singleoutput shaft which drives a cable winchpropelling full-sized passenger cars intoa xed barrier for crash evaluation andtesting. Flexibility of HV case designprovided the specic ratios in the centerdistance and space requirements.

Test Stand Drive

This HV transfer case drives the wheels of a 7-ton recreationalvehicle. Power from a 454 cubic inch Chevrolet engine, thru a torqueconverter, and a 3 speed transmission is transmitted by a Morse HVtransfer case with 370 Ibs. ft. max. torque at 2800 RPM. This HV drivewas used because it offered the RV industr y maximum space utilizationwhile still satisfying heavy load requirements.

Recreational VehicleA pair of 1125 HP diesel engines are connected to input shafts of HVpackaged drive. The dual 2.7 to 1 reduction ratio provides power toa single output shaft at 460 RPM to rotate a 66 inch diameter pumpimpeller. The HV drive was custom designed to meet limited spacerequirements.

Dredge Pump Drive


8/35I-8

Chain PitchInches

* AInches

Height of ChainB

Inches

3/8 .169 .004 .428 .002

1/2 .225 .004 .570 .002

3/4 .387 .006 .855 .003

1 .450 .008 1.140 .004

Chain PitchInches

*AInches

Height of ChainB

Inches

1 1/2 .810 .010 1.645 .005

2 1.080 .012 2.193 .007

ChainNominal

WidthInches

C D E

3/4 .685 .895 1.029

1 .937 1.147 1.281

1 1/2 1.441 1.651 1.785

2 1.945 2.155 2.289

3 2.945 3.155 3.289

4 3.945 4.155 4.289

5 4.945 5.155 5.289

Chain PitchInches

*Width For First Inch

C D E

3/4 .932 1.203 1.367

1 .892 1.785 1.545

1 1/2 .621 1.315 1.355

2 .508 1.400 1.422

HV CHAINDIMENSIONS

HV Chain dimensions

Press Fit Guide Links

Type 63 - 139

3/8, 1/2, 3/4 and 1 1 1/2 and 2 Inch Pitch HV

*A = Height of chain above Nominal Pitch Diameter of Sprocket

3/8 and 1/2 inch Pitch HV Chains 3/4, 1 1/2 and 2 Inch Pitch HV Chains

Press Fit Guide Links

Type 61 - 115

* For widths greater than 1 in. add width desired minus 1 in. to abovedimensions. Example: 3/4 pitch, 2 inch wide, the width between guides is 1.750inches.


9/35I-9

(1)HV

ChainDesignation

(2)Nominal

WidthInches

Average UltimateTensile Stength

In Pounds

Average Wt.Per Foot

In Pounds

3/8 Inch Pitch

HV-303 3/4 5,625 .65

HV-304 1 7,500 .86

HV-306 1 1/2 11,250 1.30

HV-308 2 15,000 1.73

HV-312 3 22,500 2.59

1/2 Inch Pitch

HV-404 1 10,000 1.15

HV-406 1 1/2 15,000 1.73

HV-408 2 20,000 2.30

HV-412 3 30,000 3.45

HV-416 4 40,000 4.60

3/4 Inch Pitch

HV-606 1 1/2 22,500 2.60HV-608 2 30,000 3.50

HV-612 3 45,000 5.20

HV-616 4 60,000 6.90

HV-620 5 75,000 8.60

(1)HV

ChainDesignation

(2)Nominal

WidthInches

Average UltimateTensile Strength

In Pounds

Average Wt.Per Foot

In Pounds

1 Inch PitchHV-808 2 40,000 4.60

HV-812 3 60,000 6.90

HV-816 4 80,000 9.20

HV-820 5 100,000 11.50

HV-824 6 120,000 13.80

1 1/2 Inch Pitch

HV-1212 3 90,000 10.40

HV-1216 4 120,000 13.80

HV-1220 5 150,000 17.30

HV-1224 6 180,000 20.70

2 Inch Pitch

HV- 1612 3 120,000 13.80

HV- 1616 4 160,000 18.40

HV- 1620 5 200,000 23.00

HV- 1624 6 240,000 27.60

HV DRIVEDRIVE SELECTION

HV chain

(1) Above chain sizes are stock in 10 ft. boxes. Each stock (10 ft.) and cut-to-length chains are supplied with one connecting pin set. Offset sections are not available.

(2) Widths other than listed are available for special, approved applications.

1. Determine the R.P.M. and diameter of the high speed shaft.

2. Determine the total horsepower to be transmitted.

3. Determine proper service factor from table on page I-10.

4. Establish Design Horsepower by multiplying total horsepower tobe transmitted by the proper service factor.

5. Select the chain pitch and width and number of teeth in the smallsprocket from the Horsepower Rating Tables.

a. Be sure the small sprocket will accommodate the high speedshaft diameter.

b. If the high speed shaft diameter exceeds the maximum borein the selected small sprocket it will be necessary either toincrease the number of teeth in the sprocket or select thenext larger pitch chain.

6. Determine the required ratio:RPM high speed shaft

= Ratio

RPM slow speed shaft

7. Multiply the number of teeth in the small sprocket by the ratio toobtain the number of teeth in the large sprocket.

8. Turn to page I-11 to calculate chain length. HV drives use modiedcenter distances to compensate for chain and sprocket tolerance asdetermined on page I-18.

HV drive selection

CAUTION: RELATIVE TO APPLICATIONS INVOLVING THE HANDLINGOF PEOPLE, CONTACT APPLICATION ENGINEERING AT 800 626-2093

MUST BE CONSULTED PRIOR TO DRIVE SELECTION.


10/35I-10

HV DRIVESELECTION

Prime Mover TYPE

Internal Combustion Engine with

Hydraulic Coupling or Torque Converter

Electric Motor A

Turbine

Hydraulic Motor

Internal Combustion Engine with Mechanical Drive B

APPLICATION

Type ofPrime Mover APPLICATION


Type ofPrime Mover

A B A B A B

AGITATORS CRUSHING MACHINERY PAPER INDUSTRY MACHINERY

(paddle or propeller) Ball mills, crushing rolls, jaw Agitators, bleachers 1.1 1.3

Pure liquid 1.1 1.3 crushers 1.6 1.8 Barkermechanical 1.6 1.8

Liquids variable density 1.2 1.4 DREDGES Beater, Yankee Dryer 1.3 1.5

BAKER MACHINERY Conveyors, cable reels 1.4 1.6 Calendars, Dryer & Paper

Dough Mixer 1.2 Jigs & screens 1.6 1.8 Machines 1.2 1.4

BLOWERS See Fans Consult Chippers & winder drums 1.5 1.7

BREWING & DISTILLING Cutter head drives Morse PRINTING MACHINERY

EQUIPMENT Dredge pumps See Pumps Embossing & at bed presses,

Bottling Machinery 1.0 FANS & BLOWERS folders 1.2

Brew Kettles, cookers, mash Centrifugal, propeller, vane 1.3 1.5 Paper cutter, rotary press &

tubs 1.0 Positive blowers (lobe) 1.5 1.7 linotype machine 1.1

Scale HopperFrequent starts 1.2 GRAIN MILL MACHINERY Magazine & newspaper

BRICK & CLAY EQUIPMENT Sifters, puriers, separators 1.1 1.3 presses 1.5

Auger nachines, cutting table 1.3 1.5 Grinders and hammer mills 1.2 1.4 PUMPS

Brick machines, dry press, & Roller mills 1.3 1.5 Centrifugal, gear, lobe & vane 1.2 1.4granulator 1.4 1.6 GENERATORS & EXCITERS 1.2 1.4 Dredge 1.6 1.8

Mixer, pug mill, & rolls 1.4 1.6 MACHINE TOOLS Pipe line 1.4 1.6

CENTRIFUGES 1.4 1.6 Grinders, lathes, drill press 1.0 Reciprocating

COMPRESSORS Boring mills, milling machines 1.1 3 or more cyl. 1.3 1.5

Centrifugal & rotary (lobe) 1.1 1.3MARINE DRIVES

Consult

Morse

1 or 2 cyl. 1.6 1.8

Reciprocating RUBBER & PLASTICS

1 or 2 cyl. 1.6 1.8 MILLS INDUSTRY EQUIPMENT

3 or more 1.3 1.5 Rotary type: Calendar, rolls, tubers

CONSTRUCTION EQUIPMENT Ball, Pebble, Rod, Tube, Roller 1.5 1.7 Tire-building and

OR OFF-HIGHWAY VEHICLES Dryers, Kilns, & tumbling Banbury Mills 1.5 1.7

Drive line duty, power barrels 1.6 1.8 Mixers and sheeters 1.6 1.8

take-off, accessory Consult Metal Type: Extruders 1.5 1.7

drives Morse Draw bench carriage & main SCREENS

CONVEYOR drive 1.5 Conical & revolving 1.2 1.4

Apron, bucket, pan & elevator 1.4 1.6Forming Machines

Consult

Morse

Rotary, gravel, stone &

Belt (ore, coal, sand, salt) 1.2 1.4 vibrating 1.5 1.7

Belt-light package, oven 1.0 1.2 MIXERS STOKERS 1.1

Screw & ight (heavy duty) 1.6 1.8 Concrete 1.6 1.8 TEST STANDS & Consult

CRANES & HOISTS Liquid & Semi-liquid 1.1 1.3 DYNAMOMETERS Morse

Main hoistmedium duty 1.2 1.4 OIL INDUSTRY MACHINERY TEXTILE INDUSTRY

Main hoistheavy duty, skip Compounding Units 1.1 1.3 Spinning frames, twisters,

hoist 1.4 1.6 Pipe line pumps 1.4 1.6 wrappers & reels 1.0

Slush pumps 1.5 1.7 Batchers, calendars & looms 1.1

Draw works 1.8 2.0

Chillers, Parafn lter presses,

Kilns 1.5 1.7

The Horsepower rating tables (pages I-12 and I-13) are for use underoptimum drive conditions with a smooth power source and load. Forless favorable conditions with moderate or heavy shock loads fromeither the power source and/or the load, the specied horsepower mustbe multiplied by a "Service Factor" (SF) to obtain a "Design Horsepower"(DHP). The "Design Horsepower" is used to obtain the chain selectionfrom the rating tables. Recommendations are minimum and normalconditions are assumed.

service factors

service factor table


11/35I-11

HV DRIVESELECTION

D K D K D K D K D K D K

1 .03 32 25.94 63 100.54 94 223.82 125 395.79 156 616.44

2 .10 33 27.58 64 103.75 95 228.61 126 402.14 157 624.373 .23 34 29.28 65 107.02 96 233.44 127 408.55 158 632.35

4 .41 35 31.03 66 110.34 97 238.33 128 415.01 159 640.38

5 .63 36 32.83 67 113.71 98 243.27 129 421.52 160 648.46

6 .91 37 34.68 68 117.13 99 248.26 130 428.08 161 656.59

7 1.24 38 36.58 69 120.60 100 253.30 131 434.69 162 664.77

8 1.62 39 38.53 70 124.12 101 258.39 132 441.36 163 673.00

9 2.05 40 40.53 71 127.69 102 263.54 133 448.07 164 681.28

10 2.53 41 42.58 72 131.31 103 268.73 134 454.83 165 689.62

11 3.06 42 44.68 73 134.99 104 273.97 135 461.64 166 698.00

12 3.65 43 46.84 74 138.71 105 279.27 136 468.51 167 706.44

13 4.28 44 49.04 75 142.48 106 284.67 137 475.42 168 714.92

14 4.96 45 51.29 76 146.31 107 290.01 138 482.39 169 723.46

15 5.70 46 53.60 77 150.18 108 295.45 139 489.41 170 732.05

16 6.48 47 55.95 78 154.11 109 300.95 140 496.47 171 740.60

17 7.32 48 58.36 79 158.09 110 306.50 141 503.59 172 749.37

18 8.21 49 60.82 80 162.11 111 312.09 142 510.76 173 758.11

19 9.14 50 63.33 81 166.19 112 317.74 143 517.98 174 766.90

20 10.13 51 65.88 82 170.32 113 323.44 144 525.25 175 775.74

21 11.17 52 68.49 83 174.50 114 329.19 145 532.57 176 784.63

22 12.26 53 71.15 84 178.73 115 334.99 146 539.94 177 793.57

23 13.40 54 73.86 85 183.01 116 340.84 147 547.36 178 802.57

24 14.59 55 76.62 86 187.34 117 346.75 148 554.83 179 811.61

25 15.83 56 79.44 87 191.73 118 352.70 149 562.36 180 820.70

26 17.12 57 82.30 88 196.16 119 358.70 150 569.93 181 829.85

27 18.47 58 85.21 89 200.64 120 364.76 151 577.56 182 839.04

28 19.86 59 88.17 90 205.18 121 370.86 152 585.23 183 848.29

29 21.30 60 91.19 91 209.76 122 377.02 153 592.96 184 857.58

30 22.80 61 94.25 92 214.40 123 383.22 154 600.73 185 866.93

31 24.34 62 97.37 93 219.08 124 389.48 155 608.56

1. Divide the center distance in inches by pitch of chainobtaining . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C

2. Add teeth in the small sprocket (n) to the teeth in thelarger sprocket (N) obtaining . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S

3. Subtract the teeth in the small sprocket (n) from the teeth inthe large sprocket (N) obtaining value of . . . . . . . . . . . . . . . . . DFrom the table below obtain the corresponding value of K

4. Chain length in pitches (L) =2C +

S+

K2 C

Chain length must be determined to the nearest even number ofpitches. Center distance will have to be recalculated (step 6).

5. Chain length in feet equals the chain length in pitches times the pitchin inches divided by 12.

6. After nding the chain length to the nearest number of even pitchesfrom Step 4, the nominal center distance must be determined tothree decimal places. Center distance tables should be used orcontact Morse for this value of nominal center distance. The aboveformula for determining chain length cannot be used to solve forcorrect center distance.

7. With xed center distance drives the modied center distance isdetermined as noted on Page I-18.

chain length calculationsDetermine the chain length based on a given center distance and sprocket teeth as follows:

Note: (Relating to service factor) Recommendations

are minimum and normal conditions are assumed.

ExampleGiven: N = 60, n = 25, P = 1/2 inch.

Center Distance (CD) = 24 inches

Determine:(a) chain length (L) to nearest even number of pitches(b) determine the center distance based on actual

number of pitches (L).

Solution:

(1) C = 24" 1/2 = 48

(2) S = (25 +60) = 85

(3) D = (60 - 25) = 35 corresponding K = 31.03

(4) L = (2 X 48) + 85 + 31.03

2 48

L = 139.15 + .85 = 140 pitches(nearest even number)

(5) L (in feet) = 5.8333 feet (140 x 1/2 12).

(6) Nominal center distance must be obtained from center distancetables and in this instance CD in inches = 24.124. If centerdistance tables are not in your possession please contact Morsefor correct CD calculation.


12/35I-12

HV CHAINHORSEPOWER RATING

3/8 INCH PITCH HP per inch of width based on no. of teeth in small sprocket

RPM

No.Teeth

1200 1800 2400 3000 3600 4200 4800 5400 6000 6600 7200 7800 8400 9000 9600

19 19 28 37 45 54 62 69 76 83 89 94 99 102 105 10721 20 31 40 50 59 67 75 83 89 95 100 104 106 108 10823 22 33 44 54 64 73 81 88 95 100 104 107 108 10825 24 36 48 58 68 78 86 93 99 104 107 10827 26 39 51 63 73 83 91 98 103 107 10829 28 42 55 67 77 87 95 101 106 10831 30 44 58 70 82 91 99 104 108 10833 32 47 61 74 86 95 102 107 10835 34 50 65 78 89 98 105 108

37 36 52 68 81 93 101 107 10839 38 55 71 85 96 104 10841 39 58 74 88 98 106 10843 41 60 77 91 101 107 108


RPM

No.Teeth

900 1200 1500 1800 2100 2400 2700 3000 3600 4200 4800 5400 6000 6600 7200

19 28 38 47 56 65 74 83 91 107 122 136 148 159 167 17321 31 42 52 62 72 82 91 100 117 133 146 158 167 174 17823 34 46 57 68 78 89 99 108 126 142 155 166 174 17825 37 50 62 73 85 96 106 116 135 151 163 172 17827 40 53 66 79 91 102 114 124 143 158 170 17729 43 57 71 84 97 109 121 131 150 165 174

31 46 61 76 90 103 116 127 138 156 170 17733 49 65 80 95 109 122 134 145 162 17435 52 69 85 100 114 128 140 151 167 17737 55 72 89 105 120 133 145 156 171 17839 58 76 94 110 125 139 151 161 17541 61 80 98 115 130 144 156 165 17743 63 83 102 119 135 149 160 169 178


RPM

No.Teeth

600 900 1200 1500 1800 2100 2400 2700 3000 3300 3600 3900 4200 4500 4800

19 40 59 78 97 115 132 148 164 178 191 203 213 222 229 23421 44 65 86 106 126 144 161 177 192 205 216 225 231 236 23823 48 71 94 116 136 156 174 190 204 216 226 233 237 238 236

25 52 77 101 125 147 167 185 201 215 225 233 237 238 235 22827 56 83 109 134 157 177 196 211 223 232 237 238 23429 60 89 116 142 166 187 205 220 230 237 238 23431 64 95 124 151 175 196 214 227 235 238 23533 68 100 131 159 184 205 221 232 238 237 22935 72 106 138 167 192 212 227 236 238 23237 76 112 145 174 199 219 232 238 23639 80 117 152 182 206 225 236 238 23141 84 123 158 188 213 229 238 23643 88 128 164 195 218 233 238 232

Preliminary drive selection of chain and sprockets may beobtained from the tables below. However, Morse suggests that allHV drive Selections be submitted to our Engineering Departmentfor final confirmation.

Since more than one pitch will work well in most situations it may

HV horsepower rating tablesbe desirable to make two or three choices and base nal selection onthe features most important in the design such as cost, stock chainand sprocket availability, size of drive, noise level (small pitches arequieter), loading (larger pitches carry greater load), and smoothness.

For best drive performance, use 25 teeth or more on small sprocket.

Forced pump lubrication is recommended.

Bath lubrication is satisfactory for applications to the left of the heavy line.

For HP values at higher speeds than shown, consult Technical Services.


13/35I-13

HV CHAINHORSEPOWER RATING

1 INCH PITCH HP per inch of width based on no. of teeth in small sprocket

RPMNo.Teeth

600 800 1000 1200 1400 1600 1800 2000 2200 2400 2600 2800 3000 3300 3600

19 66 87 108 128 148 167 185 202 217 232 245 257 267 278 28621 72 96 119 141 162 182 201 218 234 248 261 271 279 287 28923 79 105 129 153 175 196 216 233 249 262 273 281 287 289 28425 86 113 140 165 188 210 230 247 262 273 282 287 289 284 26927 93 122 150 176 201 223 242 259 272 282 287 289 286 27229 99 130 160 187 213 235 254 269 280 287 289 286 27631 106 139 170 198 224 246 264 277 286 289 286 27633 112 147 179 208 234 255 272 283 289 287 27935 119 155 188 218 244 264 279 287 288 28237 125 163 197 227 253 272 284 289 285 27239 131 171 206 236 261 278 287 288 27941 138 178 214 244 268 283 289 28543 144 186 222 252 274 286 288 278

1 1/2 INCH PITCH HP per inch of width based on no. of teeth in small sprocket

RPMNo.Teeth

200 300 400 500 600 800 1000 1200 1400 1600 1800 2000 2200 2400 2600

19 36 53 70 88 104 136 166 193 216 236 250 260 263 261 25121 39 59 78 96 115 149 181 208 231 248 259 263 260 24723 43 64 85 105 125 162 194 222 243 257 263 260 24625 47 70 92 114 135 173 207 234 253 262 261 24927 50 75 99 122 144 185 218 244 259 263 25429 54 80 106 131 154 196 229 252 263 25931 58 86 113 139 163 206 238 258 263 25033 61 91 120 147 172 215 246 262 26035 65 96 126 155 181 224 253 263 25237 69 102 133 162 189 232 258 262 24139 72 107 140 170 197 239 261 25841 76 112 146 177 204 245 263 25243 80 117 152 184 212 251 263 242


RPMNo.Teeth

200 300 400 500 600 700 800 900 1000 1100 1200 1400 1600 1800 2000

19 59 88 117 144 170 195 218 240 259 276 291 312 320 313 29021 65 97 128 158 186 212 237 258 277 293 306 319 315 29123 71 106 140 172 201 229 253 275 292 306 315 318 29925 78 115 151 185 216 244 269 289 304 315 319 30927 84 124 162 198 230 258 282 301 313 319 318 29129 90 133 173 210 243 271 294 310 318 319 31031 96 141 184 222 255 283 303 316 320 313 29633 102 150 194 233 267 293 311 319 317 30235 108 158 204 244 277 302 316 319 309 28537 114 166 214 254 287 309 319 316 29739 119 174 223 264 295 314 320 309 28141 125 182 232 273 302 318 317 29843 131 190 241 281 308 320 312 283

HV horsepower rating tables (continued)

For best drive performance, use 25 teeth or more on small sprocket.


Bath lubrication is satisfactory for applications to the left of the heavy line.

For HP values at higher speeds than shown, consult Technical Services.


14/35I-14

HV DRIVESPECIFICATIONS

HV sprocket information

sprocketsAre made for stock and Manufactured to order in accordance with Morse specifications. Are Hobbed with a generated involute tooth form.

Have Hardened Teeth for wear resistance on tooth anks.

materialsSprockets up to 15 inches diameter are usually made from bar steel with largersprockets manufactured from plate steel, forged slugs, Meehanite or steelcastings. The type of material can vary depending upon requirements fordelivery, quantity, sprocket design, and price. For example: Sprockets over15 inches diameter can be made from meehanite or steel castings but, requiresomewhat longer manufacturing lead times for procurement of castings; ifmade of fabricated steel with welded hubs, shorter manufacturing lead timesare realized but, the cost may be higher.

dimensionsNominal pitch and outside diametersPages I-15 and I-16.

Maximum bores and hub diameters for sprocket sizes from 21 through 33teeth. Face width dimensions.

tolerancesBore diameters, keyseats and concentricity. Tolerances closer than shown canbe furnished if required. The need for closer tolerances should be carefullyconsidered in light of increased costs.

installation of sprockets

performance informationFor maximum drive performance it is recommended that a minimum of25 teeth be used in the small sprocket. However, it is permissible to use aminimum of 19 teeth in the small sprocket with reduced performance. Wheredrive design is under 25 teethconsult Morse.

For most drives, an odd number of teeth in one of the sprockets isrecommended. The use of idler sprockets is not recommended in HV drives.

Drives employing more than two sprockets per chain should be referred toMorse for review.

HV sprocket ordering information

Specify number of teeth, pitch, chain width or sprocket face, hub, type (ifrequired). Unless specied, the length thru bore (LTB), hub diameter (HD),keyway, setscrew and tolerances will be to Morse standard specications.Material of sprockets and tooth hardness will be to Morse standardspecications.

BASIC HUB TYPES

Type A

Flush with face of sprocket

Type BHub one side

Type CHub located centrally with projection bothsides or hub can be the same length assprocket face or offset as required.


15/35I-15

HV CHAIN3/8" PITCH

3/4" FACE WIDTH

No.

Teeth

Catalog

No.

Pitch Dia.

(in.)

Min. Plain

Bore

Max.

Bore HD LTB

Approx.

Wt.19 HV303B19 2.278 1/2 1 5/32 1 5/8 1 13/32 .921 HV303B21 2.516 1/2 1 9/32 1 7/8 1 13/32 1.223 HV303B23 2.754 1/2 1 3/8 2 1/8 1 13/32 1.525 HV303B25 2.992 3/4 1 5/8 2 3/8 1 13/32 1.8

27 HV303B27 3.230 3/4 1 3/4 2 5/8 1 13/32 2.229 HV303B29 3.468 3/4 1 13/16 2 7/8 1 13/32 2.631 HV303B31 3.707 3/4 2 1/8 3 3/32 1 13/32 3.138 HV303B38 4.541 3/4 2 7/8 3 15/16 1 13/32 5.0

42 HV303B42 5.018 3/4 3 5/16 4 13/32 1 13/32 6.357 HV303B57 6.807 1 1/4 4 1/2 6 1 13/32 11.776 HV303B76 9.074 1 1/4 4 1/2 6 1 13/32 16.7

1" FACE WIDTH

19 HV304B19 2.278 1/2 1 5/32 1 5/8 1 5/8 1.121 HV304B21 2.516 1/2 1 9/32 1 7/8 1 5/8 1.423 HV304B23 2.754 1/2 1 3/8 2 1/8 1 5/8 1.825 HV304B25 2.992 3/4 1 5/8 2 3/8 1 5/8 2.1

27 HV304B27 3.230 3/4 1 3/4 2 5/8 1 5/8 2.629 HV304B29 3.468 3/4 1 13/16 2 7/8 1 5/8 3.131 HV304B31 3.707 3/4 2 1/8 3 3/32 1 5/8 3.638 HV304B38 4.541 3/4 2 7/8 3 15/16 1 5/8 5.8

42 HV304B42 5.018 3/4 3 5/16 4 13/32 1 5/8 7.457 HV304B57 6.807 1 1/4 4 1/2 6 1 5/8 13.776 HV304B76 9.074 1 1/4 4 1/2 6 1 5/8 20.6

1 1/2" FACE WIDTH19 HV306B19 2.278 1/2 1 5/32 1 5/8 2 5/32 1.521 HV306B21 2.516 1/2 1 9/32 1 7/8 2 5/32 1.9

23 HV306B23 2.754 1/2 1 3/8 2 1/8 2 5/32 2.425 HV306B25 2.992 3/4 1 5/8 2 3/8 2 5/32 2.8

27 HV306B27 3.230 3/4 1 3/4 2 5/8 2 5/32 3.429 HV306B29 3.468 3/4 1 13/16 2 7/8 2 5/32 4.131 HV306B31 3.707 3/4 2 1/8 3 3/32 2 5/32 4.838 HV306B38 4.541 3/4 2 7/8 3 15/16 2 5/32 7.8

42 HV306B42 5.018 3/4 3 5/16 4 13/32 2 5/32 9.757 HV306B57 6.807 1 1/4 4 1/2 6 2 5/32 18.276 HV306B76 9.074 1 1/4 4 1/2 6 2 5/32 28.9

HV sprockets

3/8" pitch

LTB

Type BTeeth Hardened Hub

Projection One Side


16/35I-16

HV CHAIN1/2" PITCH

1" FACE WIDTHNo.

TeethCatalog

No.Pitch Dia.

(in.)Min. Plain

BoreMax.Bore

HD LTBApprox.

Wt.

19 HV404B19 3.038 1/2 1 7/16 2 7/32 2 2.521 HV404B21 3.355 1/2 1 11/16 2 1/2 2 3.323 HV404B23 3.672 3/4 1 13/16 2 7/8 2 4.025 HV404B25 3.989 3/4 2 1/8 3 3/16 2 4.9

27 HV404B27 4.307 3/4 2 3/8 3 1/2 2 5.929 HV404B29 4.625 3/4 2 9/16 3 13/16 2 7.031 HV404B31 4.942 3/4 2 3/4 4 5/32 2 1/2 10.138 HV404B38 6.055 3/4 3 3/4 5 9/32 2 1/2 16.1

42 HV404B42 6.691 3/4 4 3/8 5 15/16 2 1/2 20.257 HV404B57 9.076 1 1/4 4 1/2 6 2 1/2 27.176 HV404B76 12.099 1 2 1/2 3 5/8 2 31.1

1 1/2" FACE WIDTH19 HV406B19 3.038 1/2 1 7/8 2 7/32 2 1/2 3.321 HV406B21 3.355 1/2 1 11/16 2 1/2 2 1/2 4.323 HV406B23 3.672 3/4 1 13/16 2 7/8 2 1/2 5.125 HV406B25 3.989 3/4 2 1/8 3 3/16 2 1/2 6.3

27 HV406B27 4.307 3/4 2 3/8 3 1/2 2 1/2 7.629 HV406B29 4.625 3/4 2 9/16 3 13/16 2 1/2 9.031 HV406B31 4.942 3/4 2 3/4 4 5/32 3 12.338 HV406B38 6.055 3/4 3 3/4 5 9/32 3 19.7

42 HV406B42 6.691 3/4 4 3/8 5 15/16 3 24.657 HV406B57 9.076 1 1/4 4 1/2 6 3 35.476 HV406B76 12.099 1 2 1/2 3 5/8 2 1/2 46.1

2" FACE WIDTH19 HV408B19 3.038 1/2 1 7/16 2 7/32 3 4.121 HV408B21 3.355 1/2 1 11/16 2 1/2 3 5.223 HV408B23 3.672 3/4 1 13/16 2 7/8 3 6.325 HV408B25 3.989 3/4 2 1/8 3 3/16 3 7.7

27 HV408B27 4.307 3/4 2 3/8 3 1/2 3 9.229 HV408B29 4.625 3/4 2 9/16 3 13/16 3 10.931 HV408B31 4.942 3/4 2 3/4 4 5/32 3 12.7

38 HV408B38 6.055 3/4 3 3/4 5 9/32 3 20.1

42 HV408B42 6.691 3/4 4 3/8 5 15/16 3 25.157 HV408B57 9.076 1 1/4 4 1/2 6 3 1/2 43.676 HV408B76 12.099 1 2 1/2 3 5/8 3 60.7

3" FACE WIDTH

19 HV412B19 3.038 3/4 1 7/16 2 7/32 4 5.321 HV412B21 3.355 3/4 1 11/16 2 1/2 4 6.923 HV412B23 3.672 3/4 1 13/16 2 7/8 4 8.625 HV412B25 3.989 3/4 2 1/8 3 3/16 4 10.5

27 HV412B27 4.307 3/4 2 3/8 3 1/2 4 12.629 HV412B29 4.625 3/4 2 9/16 3 13/16 4 14.731 HV412B31 4.942 3/4 2 3/4 4 5/32 4 17.338 HV412B38 6.055 3/4 3 3/4 5 9/32 4 27.2

42 HV412B42 6.691 3/4 4 3/8 5 15/16 4 33.957 HV412B57 9.076 1 1/4 4 1/2 6 4 1/2 60.276 HV412B76 12.099 1 2 1/2 3 5/8 4 83.2

Type BTeeth Hardened Hub

Projection One Side

HVsprockets

1/2" pitch

LTB


17/35I-17

HV DRIVESINSTALLATION

HVinstallation information

HV chain and sprocket Installation When cases for HV drives are not purchased from Morse and the design andmanufacture is performed by others, certain basic guide lines must be followed to ensure proper drive performance. MorseHV drive recommendations, ratings, and selection procedures in this catalog are premised on installation in a properhousing with alignment and installation as outlined in this section and lubrication as recommended on pages I-19 and I-20.

A. Case StructuresMorse HV drives are normally employed on applications where high speedand/or high horsepower transmission is the requirement. The HV driveshould be installed in rigid housings of welded steel or cast constructioncomplete with shafts, bearings, seals, and a proper lubrication system inorder to realize the full performance capability of the drive (Fig. 1). Theconnection or interface to driver and driven equipment is accomplishedby exible couplings, universal joints, or direct anges. Morse offers theservice of design and manufacture of such cases.

C. Sprocket OffsetOffset from the machined face of one sprocket to the corresponding faceof the second sprocket (Fig. 3) should ideally be held to zero with themaximum permissible offset limited to the value "K" inches in table below.Excessive offset will cause wear on inside of guide links or possible chainfailure if the chain guides climb the sprocket teeth.

B. Shaft ParallelismShafts must be parallel in two planes within .005 inch/foot of bearing

'mounting distance (Fig. 2). Special attention must be given to driveswith non-horizontal shafts due to the tendency for chain to ride on theguide links. Applications with shafts other than the horizontal should bereferred to Morse.

D. Sprocket MountingSprockets should have a light interference t on shafts. Preferred ts can

be obtained from the latest ANSI Standard B4.1 for Interference LocationalFits, Class LN3.

Sprockets may be installed by heating the sprocket in 180F oil, shrinkingthe shaft with dry ice or press-tting with a hydraulic press. A positivemechanical connection is necessary for torque transmittal regardless of thetype of sprocket t to shaft. Sprockets with tapered bores or keyseats aresatisfactory, however, Morse does not recommend the use of split-taperedbushings in mounting HV sprockets to shafts.

It is recommended that each sprocket be located positively against ashoulder or step on the shaft for accurate positioning. With this stylemounting, the use of type "A" (hubs flush) sprocket will provide thesimplest design.

E. HV Chain Installation

HV chains can be furnished in the number of required pitches endless oropen for connection of the ends with a standard pin set.

In some case designs, bearing carriers are large enough to installsprockets and endless chain through the openings. Other designs employhousings which are split at the shaft center to facilitate installation.

If chain must be installed open refer to Figs. 1 thru 5 on page I-18.

chain pitchinches

3/8 1/2 3/4 1 1 1/2 2

K .022 .025 .031 .036 .044 .051


18/35I-18

HV DRIVESINSTALLATION

HV installation information (continued)

Bring ends of chain together ,on top of larger sprocket in mesh withsprocket teeth.

On pre-loaded, xed center distance a hook-up tool similar to that shownmay be used to bring the ends together.

When connecting the open ends with a pin set, it is very important thatthe longer pin of the set must seat nearest to the outside ank of theguide plate.

For rivet type connectors: washers are used on both sides in chainpitches of 1 1/2 and 2 inches. Washers are not used in chain pitches of3/8, 1/2, 3/8 and 1 inches.

Spirol pin type connectors are normally used for connecting open endedchains. Spirol Pin is driven into each end of pin with a drift.

F. Center DistanceOn large drive ratios (over 3:1) it is desirable to have at least 120 degreeswrap on the small sprocket. On drives without center distance adjustmentthe center distance should be kept to a minimum. Minimum centerdistance is limited to half the sum of the pitch diameters. It is desirableto keep the center distance under 30 pitches. Drives with long centerdistances may require center distance adjustment to attain adequatewear life. Adjustable center distances should be limited to a maximumof 60 pitches of chain, and if a longer center distance is required a doublereduction may be necessary.

Center distance and sprocket combinations must always be selected toprovide an even number of chain pitches. Nominal center distances shouldbe calculated to three decimal places.

Center distance tables should be used or contact Morse for this value.HV center distances are modied to compensate for chain and sprockettolerances. This modied center distance is obtained by adding .008 inchper foot of center distance to the nominal or theoretical at pitch centerdistance. Center distance tolerance should be on the plus side.

G. HV Case ClearancesRadial Clearance Where the chain fully wraps the sprockets, thedesirable radial clearance beyond the pitch circle is 2 times the chain pitch.Minimum clearance sufcient to clear the chain in process of jumping asprocket tooth is 1 1/8 times the pitch.

Sag Clearance The case must be designed for clearance between theslack strand of chain and the inside of the case. For this clearance, usethe formula below with value of "A" determined from graph (Fig. 6). Forreversing drives, design with sag clearance both top and bottom.

Side Clearance The side clearance beyond the width of the chain shouldbe equal to or greater than one chain pitch.

Tangent Distance in Pitches

A

=S

agClearanceofTangentDistance

50

40

30

20

10

00 20 40 60 80 100 120 140

Sag Clearance

(inches)

= A x Tangent Distance (inches)

100


19/35I-19

HV DRIVESLUBRICATION

HV chain lubrication

A. Pressure Lube SystemsExperience has shown that for chain speeds above 2500 FPM a pressurelubrication system is required. Proper lubrication is necessary to helpprovide satisfactory performance, chain wear life and to also lubricate

the surfaces of chain and sprocket contact. The lubricant must penetratethe chain joints to dissipate frictional heat and ush out foreign particles.

The lubrication system should supply ltered oil under pressure to the spraypipes at the total rate of 1 GPM per inch of chain width. The lubricatingpump with integral pressure relief valve can be driven directly from oneof the case shafts or by means of a separate motor, or an existing supplyof lubricating oil under pressure may be utilized.

When utilizing a case driven oil pump, the oil reservoir or sump should

have a minimum capacity of three minutes of oil ow. Spray pipes having3/8" I.D. with one .093 inch diameter orice per inch of chain width areadequate for most installations. Long center distances or reversing drivesmay require an additional spray pipe. (A single .093 inch diameter oriceows approximately .8 GPM of SAE 20W oil at 20 PSI.) The spray pipe islocated so as to spray oil into and thru the chain as the slack strand enteresthe sprocket (Fig. 2).

A replaceable element full ow oil lter with built in relief valve should beinstalled between the oil pump and spray pipe. The lter element shouldbe capable of removing particles larger than 25 microns. A pressure gaugeor a low oil pressure switch with a warning device or light is recommendedto protect the chain drive in the event of a malfunction in the lube system.

Additional components should include an oil sump strainer for the oil pumpsuction line, and oil ll/breather, magnetic drain plug and an oil level sightgauge. Shaft bearings can be lubricated from the oil spray within the caseor in some instances, separate lube lines may be required.

B. Bath LubricationAt chain speeds below 2500 FPM bath lubrication may be satisfactory.With bath lubrication, the dynamic oil level should be maintained at thelowest point of the pitch line, and for this purpose an oil level sight gaugeis desirable. Too low an oil level is ineffective and too high a level will causedetrimental churning and heating of the oil. In some instances it may benecessary to provide bafes and troughs to direct oil into the chain. Insome cases bearings may require separate lubrication.

C. Lubrication Oil SpecificationsSatisfactory HV chain case performance depends upon the use of wellrened, high quality oil.

As a guide to lubrication products, oils are designated by the lettersSA, SB, and SC on the containers. These letters are service classicationsestablished by the American Petroleum Institute (API). The designationsare in addition to the SAE grades established by the Society of Automotive

Engineers which indicate the viscosity of the oil recommended

Fig. 1 Pressure (Pump) Lubrication

Fig. 3 Bath Lubrication


20/35I-20

HV CHAINMAINTENANCE

maintenance

For maximum performance use an oil conforming to one of the APIclassications (Page I-19) with the proper SAE Grade number in accordancewith the anticipated operating temperature

(See chart below). Oils that do not have both the SAE viscosity andrecommended API designations on the container should not be used.

oil viscosity recommendations

Where Application Requires Oil in Excess of

SAE 20 Grade, Consult Morse Engineering forRecommendations.It is desirable to limit lube oil sump temperature to 180F maximum tohelp prevent rapid deterioration of the oil. This can be accomplished byexternal cooling fans or a suitable oil cooler if necessary.

Generally HV chains operate with a temperature rise of approximately40F above ambient temperature. If an oil cooler is installed as a part ofthe lubrication system, the SAE grade and equivalent viscosity (SSU) forthe next lower ambient temperature range can be used. For example: Ifambient room temperature is 95F and oil cooler is not used, an SAE 20oil 300 SSU @ 100F with API service classication SA, SB, or SC should beused. If an oil cooler is provided an SAE 10, 200 SSU @ 100F oil, Type Aor B Automatic Transmission Fluid (ATF) can be used.

HV transfer caseThis HV transfer case is directly mounted on the tail shaft extensionof an automatic transmission directing power to both front and rearaxles of a cargo vehicle. The HV case has a 1.09:1 reduction ratio andtransmits up to 1400 lb.-ft. torque at stall and 150 HP @ 4500 RPM withmaximum chain speed of

6200 FPM. The lower weight of the HV case over comparable gear typecase allowed increased vehicle payload.

Photograph below is an example of HV transfer case, custom designed tomeet customer's requirements

Lubrication ChangesOil should be kept clean to help assure long, trouble free service. If oilbecomes dirty or discolored or otherwise appears to be contaminated,it should be drained, ushed and replaced. Good practice dictates thatperiodic oil changes should be made with the proper SAE viscosity and APIclassication every 1000 hours or every 4 months whichever occurs rst.

If Type A Automatic Transmission Fluid is used, it should be changedif the characteristic red coloring becomes a brownish color indicatingoxidation in the oil.

When oil is changed, the case should be drained, ushed with a suitable

solvent (Mobil Oil Company, Solvasol or equivalent), and replaced witha new oil. The unit must be kept free of water and foreign material atall times. If water is found in the oil, more frequent oil changes maybe required. Conversely, longer oil change intervals are possible ifoperating conditions are such that the oil does not deteriorate or becomecontaminated. The length of oil change intervals should be ascertainedafter a careful analysis of operating conditions and inspections of the oil.

When making oil changes a thorough inspection of the lube systempiping, pump, and spray pipe orices should be made. The lter elementshould be replaced at this time if it is dirty.

A good functioning oil system with clean oil of the correct type isnecessary for long, quiet trouble free life of the HV drive and case.

Surrounding orAmbient Temp.

ViscositySAE Grade

Viscosity SayboltSeconds @ 100F

Under 40F *SAE 5 150 SSU

40 to 90F *SAE 10 200 SSU

Over 90F *SAE 20 300 SSU

*Type A or B Automatic Transmission Fluid (ATF) can also be used.


21/35I-21

SILENT CHAIN DRIVES

MORSE SILENT CHAIN DRIVES

MORSE SILENT CHAINprovides an economical, compact drive withreduced loads and long life.

MORSE is your single source of supply for a full range ofSILENT CHAINDRIVES. All sprockets and chains are available when and where you needthem. Available in standard pitches from 3/16" to 1" and in widths up to 6".


22/35I-22

SILENT CHAIN DRIVESFEATURES

features 99% Efficient Drives Economical Simple Installation Long Life Space Saver Reduced Bearing Loads

Smooth Drive Quiet Drive Cool Drive Not Affected by Atmospheric

Conditions Adaptable to Your Centers High Speeds Minimum of Maintenance Adaptable to Speed Changes Positive DriveNo Slip Wide Speed and H.P. Range

Morse Silent Chain is an Inverted Tooth type drive offering particularly smooth, quietpower transmission at higher speeds up to 5000 FPM. The exclusive Morse Rocker Joint

eliminates friction during chain articulationpermitting high rotative speed with lesswear and heat.

All of the silent chains and sprockets listed are to the ANSI standard prole.

Chain designation listed as example SC 408, indicating:S.C.Silent Chain standard link prole and guide

4Pitch in 1/8" increments08Width in 1/4" increments

All sizes of chain and sprockets listed are of the Center Guide type except SC302.

Standards are not such that competitive chains may be connected together. Theywill, however, individually run over the same set of standard sprockets.

Sprocket designation listed, as an example, 408-38:4Pitch in 1/8" increments

08Width in 1/4" increments38Number of teeth

offset link section

Adjustments of centers and an even number of pitches in the chain length are desirablecharacteristics for all chain drives. Centers should be selected which result in an evennumber of pitches in the chain length.

When xed centers necessitate the use of an odd number of pitches an offset linkor hunting link may be used. As illustrated, this assembly, four pitches long, includesone row ofoffset links.


23/35I-23

SILENT CHAIN3/16" PITCH

ChainNo.

NominalWidth

WidthOver

RivetsA

WidthBetweenGuides

B

Assem.Links

Connecting PinAssembly Width

Height ofChain Above

Spkt. P.D.F (Max.)

AverageUltimateTensile

in pounds

Weightper

Footin poundsC D F

SC-0305 5/32 .200 3/32 2 & 3 1.08 .140 .248 .096 500 .07SC-0307 7/32 .263 5/32 3 & 4 .139 .171 .310 .096 750 .10

SC-0309 9/32 .325 7/32 4 & 5 .171 .201 .372 .096 1000 .12SC-0311 11/32 .388 9/32 5 & 6 .202 .232 .434 .096 1250 .15

SC-0315 15/32 .513 13/32 7 & 8 .264 .294 .558 .096 1750 .20SC-0319 19/32 .638 Center Guide 9 & 10 .327 .355 .682 .096 2250 .25

SC-0325 25/32 .825 Center Guide 12 & 13 .421 .448 .869 .096 3000 .33SC-0331 31/32 1.013 Center Guide 15 & 16 .514 .543 1.057 .096 3750 .40

Duplex chain will give a rugged positive drive with maximum service. Consult factory for recommendations

and assemblies.

3/16 " pitch silent chainThe Morse 3/16" pitch silent chain drive is a high speed power transmission medium that offers the maximum in performance and reliability. Quietness

and durability are the result of unique design and manufacturing practices.

Materials are the nest alloy steels, properly heat treated to resist wear and fatigue. Chain link and sprocket proles are in accordance with

practices established by the chain industry. Morse 3/16" chain is available in non-corrosive types of materials.

Morse 3/16" pitch Silent Chain is manufactured in three basic types of assembly to give complete coverage for all drive requirements.Eight standard widths handle load ranges and speeds with economy and long chain life.

Joining pinInsertion of the pin and cotterallows simple eld assembly ofthe chain.

Connecting linkThe connecting link isused when chain is cut andassembled in the eld. Theconnecting link consistsof 1 pin link, inside link, 1connector plate and 2 cotterpins.

Note: Use even number of pitches in chain. Offset or hunting links not available.

For standard drives, side guide chain is recommended for all chainsup to and including 15/32" wide (SCO315).

For standard drives, center guide is recommended for all chains19/32" (SCO319) and wider.

For serpentine drives, revers ing secondary shaft rotation, or ifadjustable idler is required.

When cut length is specied pin and plate sets will be furnished at the per foot price. Cotter type

joining pin or connecting link are available at an additional price.


24/35I-24

SILENT CHAIN DRIVES3/8", 1/2" 3/4" & 1" PITCH

3/8" PITCH

ChainNo.

ChainNominal

Width

ChainWidthover

Rivets

Height ofChain Above

Spkt. P.D.A (Min.)

Height ofChain

B (Max.)

AverageUltimateTensile

In Pounds

WeightPer Ft.

In Pounds

SC 302* 1/2 .769 .188 .398 1875 .38SC 303 3/4 .895 .188 .398 2810 .56

SC 304 1 1.147 .188 .398 3750 .75SC 305 1 1/4 1.399 .188 .398 4690 .94

SC 306 1 1/2 1.651 .188 .398 5620 1.25SC 308 2 2.155 .188 .398 7500 1.50

1/2" PITCHSC 403 3/4 .895 .252 .529 5600 .75SC 404 1 1.147 .252 .529 7500 1.0SC 405 1 1/4 1.399 .252 .529 9300 1.25

SC 406 1 1/2 1.651 .252 .529 11200 1.50SC 408 2 2.155 .252 .529 15000 2.0SC 410 2 1/2 2.655 .252 .529 18700 2.50

SC 412 3 3.155 .252 .529 22500 3.0SC 414 3 1/2 3.655 .252 .529 26200 3.50

3/4" PITCHSC 606 1 1/2 1.700 .379 .795 16900 2.25SC 608 2 2.200 .379 .795 22500 3.0

SC610 2 1/2 2.700 .379 .795 28100 3.75SC 612 3 3.200 .379 .795 33800 4.50

SC 616 4 4.200 .379 .795 45000 6.0SC 620 5 5.200 .379 .795 56200 7.50

1" PITCHSC 812 3 3.235 .504 1.058 45000 6.0SC 816 4 4.235 .504 1.058 60000 8.0

SC 820 5 5.235 .504 1.058 75000 10.0SC 824 6 6.235 .504 1.058 90000 12.0

*Outside guide type chain. Distance between guides is .460.

An offset link is not recommended unless chain needed is an uneven number of pitches. Example: 153 pitches, order 150 pitches and one

offset link. An offset or hunting link is assembled without guide links. Price of offset links are added to the per foot price of chain.

Stock Chain is supplied with one connecting link set. Additional connecting link sets sold only in package ("Poly-Pack") quantities. Packagequantities: (25) for 3/8" and 1/2" pitch; (10) for 3/4" pitch: (5) for 1" pitch.

stock silent chain


25/35I-25

SILENT CHAIN DRIVESSELECTION

engineering designThe following information should be considered to design longlife, quiet, trouble free Silent Chain Drives:

For long life, a minimum of 17 teeth and an odd number of teeth onone sprocket where possible.

For maximum quietness, use sprockets with 23 teeth or more.

For trouble free drives, apply service factor for design load.

points to consider in selectionThere are certain primary conditions which affect the design of efcientsilent chain drives. Those most commonly encountered are:

1. The selection of wider chain than the minimum sizes recommendedwill give more than a corresponding return in service rendered. Thisis particularly true in drives where overloads are proportionately high.

2. Quieter drives result from designs employing a larger number ofteeth in the drive sprocket. For quieter drives use a minimum of 23teeth in the driver sprocket.

3. Larger pitches permit longer center distance.

4. Center adjustment is always desirable. It is necessary with vertical

centers.

5. Fully enclosed drives with adequate lubrications are desirable formaximum service life and least maintenance.

6. An even number of pitches in the length of chain is desirable becauseoffset link is eliminated.

7. With horizontal or inclined shaft centers, the tight or pulling strandmay be either on the top or bottom when the center distance is equalor less than the sum of the sprocket diameters. For longer centersthe tight strand should be on top.

8. Chain drives should be chosen on the basis of Horsepower ratingrather than ultimate tensile strength.

9. Chain cases serve as guards for safety and protection. They conne

lubrication to the area of the chain proper.

On long or xed center drives, use a sprocket or shoe idler, placedwhere greatest amount of slack accumulates.

Do not reduce wrap on small sprockets with idler. Engineering is available to you for review of your chain drive design.

selection of silent chain drives1. Determine the R.P.M. and diameter of the high speed shaft.

2. Determine the total horsepower to be transmitted.

3. Determine proper service factor from table.

4. Establish Design Horsepower by multiplying total horsepower tobe transmitted by the proper service factor.

5. Select the chain pitch and width and number of teeth in the smallsprocket from the Horsepower Rating Tables.

a. Be sure the small sprocket will accommodate the high speedshaft diameter.

b. If the high speed shaft diameter exceeds the maximum borein the selected small sprocket it will be necessary either toincrease the number of teeth in the sprocket or select the nextlarger pitch chain.

6. Determine the required ratio:

RPM high speed shaft= Ratio

RPM slow speed shaft

7. Multiply the number of teeth in the small sprocket by the ratio toobtain the number of teeth in the large sprocket.

8. Turn to page I-23 to calculate chain length.

CAUTION: RELATIVE TO APPLICATION INVOLVING THE HANDLINGOF PEOPLE, ENGINEERING MUST BE CONSULTED PRIOR TO DRIVESELECTION.


26/35I-26

SILENT CHAIN DRIVESSERVICE FACTORS

Prime Mover TYPEInternal Combustion Engine with

A

Hydraulic Coupling or Torque Converter

Electric MotorTurbineHydraulic Motor

Internal Combustion Engine with Mechanical Drive B

APPLICATION



Type ofPrime Mover

A B A B A B

AGITATORS CRUSHING MACHINERY PAPER INDUSTRY MACHINERY

(paddle or propeller) Ball mills, crushing rolls, jaw Agitators, bleachers 1.1 1.3Pure Liquid 1.1 1.3 crushers 1.6 1.8 Barkermechanical 1.6 1.8

Liquidsvariable density 1.2 1.4 DREDGES Beater, Yankee Dryer 1.3 1.5

BAKER MACHINERY Conveyors, pumps, cable reels 1.4 1.6 Calendars, Dryer & Paper

Dough Mixer 1.2 Jigs & screens 1.6 1.8 Machines 1.2 1.4

BLOWERS See FansCutter head drives

Consult

Morse

Chippers & winder drums 1.5 1.7

BREWING & DISTILLING PRINTING MACHINERY

EQUIPMENT Dredge pumps See Pumps Embossing & at bed presses,

Bottling Machinery 1.0 FANS & BLOWERS folders 1.2

Brew Kettles, cookers, mash Centrifugal, propeller, vane 1.3 1.5 Paper cutter, rotary press &

tubs 1.0 Positive blowers (lobe) 1.5 1.7 linotype machine 1.1

Scale HopperFrequent starts 1.2 GRAIN MILL MACHINERY Magazine & newspaper

BRICK & CLAY EQUIPMENT Sifters, puriers, separators 1.1 1.3 presses 1.5

Auger machines, cutting table 1.3 1.5 Grinders and hammer mills 1.2 1.4 PUMPS

Brick machines, dry press, & Roller mills 1.3 1.5 Centrifugal, gear, lobe & vane 1.2 1.4

granulator 1.4 1.6 GENERATORS & EXCITERS 1.2 1.4 Dredge 1.6 1.8

Mixer, pug mill, & rolls 1.4 1.6 MACHINE TOOLS Pipe line 1.4 1.6

CENTRIFUGES 1.4 1.6 Grinders, lathes, drill press 1.0 Reciprocating

COMPRESSORS Boring mills, milling machines 1.1 3 or more cyl. 1.3 1.5

Centrifugal & rotary (lobe) 1.1 1.3MARINE DRIVES

Consult

Morse

1 ore 2 cyl. 1.6 1.8

Reciprocating RUBBER & PLASTICS

1 or 2 cyl. 1.6 1.8 MILLS INDUSTRY EQUIPMENT

3 or more 1.3 1.5 Rotary type: Calendars, rolls, tubers

CONSTRUCTION EQUIPMENT Ball, Pebble, Rod, Tube, Roller 1.5 1.7 Tire-building and

OR OFF-HIGHWAY VEHICLES Dryers, Kilns, & tumbling Banbury Mills 1.5 1.7

Drive line duty, power barrels 1.6 1.8 Mixers and sheeters 1.6 1.8

take-off, accessory Consult Metal type: Extruders 1.5 1.7

drives Morse Draw bench carriage & main SCREENS

CONVEYOR drive 1.5 Conical & revolving 1.2 1.4

Apron, bucket, pan & elevator 1.4 1.6Forming Machines

Consult

Morse

Rotary, gravel, stone &

Belt ( ore, coal, sand, salt) 1.2 1.4 vibrating 1.5 1.7

Beltlight package, oven 1.0 1.2 MIXERS STOKERS 1.1

Screw & ight (heavy duty) 1.6 1.8 Concrete 1.6 1.8 TEST STANDS & Consult

CRANES & HOISTS Liquid & Semi-liquid 1.1 1.3 DYNAMOMETERS MorseMain hoistmedium duty 1.2 1.4 OIL INDUSTRY MACHINERY TEXTILE INDUSTRY

Main hoistheavy duty,skip Componding Units 1.1 1.3 Spinning frames, twisters,

hoist 1.4 1.6 Pipe line pumps 1.4 1.6 wrappers & reels 1.0

Slush pumps 1.5 1.7 Batchers, calendars & looms 1.1

Draw works 1.8 2.0

Chillers, Parafn lter presses,

Kilns 1.5 1.7

service factorsThe Horsepower rating tables (pages I-24 and I- 25) are for use under

optimum drive conditions with a smooth power source and load. For

less favorable conditions with moderate or heavy shock loads from

either the power source and/or the load, the specied horsepower must

be multiplied by a "Service Factor" (SF) to obtain a "Design Horsepower"

(DHP). The "Design Horsepower" is used to obtain the chain selection

from the rating tables.

Service Factors are selected below for various applications after rst de-

termining the prime mover or power source type. Note: (Relating to

Service Factors). Recommendations are minimum and normal con-

ditions are assumed.

service factor table


27/35I-27

SILENT CHAIN DRIVESCHAIN LENGTH CALCULATION

D K D K D K D K D K D K1 .03 32 25.94 63 100.54 94 223.82 125 395.79 156 616.44

2 .10 33 27.58 64 103.75 95 228.61 126 402.14 157 624.37

3 .23 34 29.28 65 107.02 96 233.44 127 408.55 158 632.35

4 .41 35 31.03 66 110.34 97 238.33 128 415.01 159 640.38

5 .63 36 32.83 67 113.71 98 243.27 129 421.52 160 648.46

6 .91 37 34.68 68 117.13 99 248.26 130 428.08 161 656.59

7 1.24 38 36.58 69 120.60 100 253.30 131 434.69 162 664.77

8 1.62 39 38.53 70 124.12 101 258.39 132 441.36 163 673.00

9 2.05 40 40.53 71 127.69 102 263.54 133 448.07 164 681.28

10 2.53 41 42.58 72 131.31 103 268.73 134 454.83 165 689.62

11 3.06 42 44.68 73 134.99 104 273.97 135 461.64 166 698.00

12 3.65 43 46.84 74 138.71 105 279.27 136 468.51 167 706.44

13 4.28 44 49.04 75 142.48 106 284.67 137 475.42 168 714.92

14 4.96 45 51.29 76 146.31 107 290.01 138 482.39 169 723.46

15 5.70 46 53.60 77 150.18 108 295.45 139 489.41 170 732.05

16 6.48 47 55.95 78 154.11 109 300.95 140 496.47 171 740.60

17 7.32 48 58.36 79 158.09 110 306.50 141 503.59 172 749.37

18 8.21 49 60.82 80 162.11 111 312.09 142 510.76 173 758.11

19 9.14 50 63.33 81 166.19 112 317.74 143 517.98 174 766.90

20 10.13 51 65.88 82 170.32 113 323.44 144 525.25 175 775.74

21 11.17 52 68.49 83 174.50 114 329.19 145 532.57 176 784.63

22 12.26 53 71.15 84 178.73 115 334.99 146 539.94 177 793.57

23 13.40 54 73.86 85 183.01 116 340.84 147 547.36 178 802.57

24 14.59 55 76.62 86 187.34 117 346.75 148 554.83 179 811.61

25 15.83 56 79.44 87 191.73 118 352.70 149 562.36 180 820.70

26 17.12 57 82.30 88 196.16 119 358.70 150 569.93 181 829.85

27 18.47 58 85.21 89 200.64 120 364.76 151 577.56 182 839.04

28 19.86 59 88.17 90 205.18 121 370.86 152 585.23 183 848.89

29 21.30 60 91.19 91 209.76 122 377.02 153 592.96 184 857.58

30 22.80 61 94.25 92 214.40 123 383.22 154 600.73 185 866.93

31 24.34 62 97.37 93 219.08 124 389.48 155 608.56

1. Divide center distance in inches by pitch of chain, obtaining . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . C2. Add teeth in small sprocket to teeth in large sprocket, obtaining . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S3. Subtract teeth in small sprocket from teeth in large sprocket,

obtaining Value D. From table obtain the corresponding value of . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . K

4. Chain length in pitches =2C +

S+

K

2 C

5. Multiply length by pitch of chain to nd chain length in inches.

calculation of chain lengthThe following method of calculating approximate chain length may be used for both standardroller chain, silent, and HV drives.

ExampleGiven:

Teeth in driving sprocket..................................................21T

Teeth in driven sprocket...................................................60TPitch of chain...................................................................1/2"

Center distance................................................................24"

Required:

Necessary length of chain

Solution:

(1) C = 24" 1/2 = 48

(2) S = (21 + 60) = 81

(3) D = (60 - 21) = 39

corresponding K = 38.53

(4) Chain length in pitches = (2 X 48)+ 81 + 38.53 = 137.302 48

The next higher whole number is 138 pitches.

(5) 138 X 1/2 = 69".

A chain cannot contain the fractional part of a pitch; therefore, in casethe gure for the number of pitches for the chain length obtained fromthe use of the above formula contains a fractional part of a pitch, use thenext higher whole number of pitches.

Whenever possible, use an even number of pitches in the chainlength. An odd number of pitches requires the use of an offset link whichis not generally desirable.

The above formula for calculating chain length cannot be used tocalculate center distance dimensions.


28/35I-28

SILENT CHAINHORSEPOWER RATING

3/16" PITCH horsepower per inch of width

No. ofRevolution Per MinuteSmall Sprocket

No. of

Teeth Teeth

Small 500 600 700 800 900 1200 1800 2000 3500 5000 7000 9000 SmallSprocket Sprocket

15 .28 .33 .38 .43 .47 .60 .80 .90 1.33 1.66 1.94 1.96 15

17 .33 .39 .44 .50 .55 .70 .96 1.05 1.60 2.00 2.40 2.52 17

19 .37 .43 .50 .55 .61 .80 1.10 1.20 1.80 2.30 2.76 2.92 19

21 .41 .48 .55 .62 .68 .87 1.22 1.33 2.03 2.58 3.12 3.35 21

23 .45 .53 .60 .68 .75 .96 1.35 1.47 2.25 2.88 3.50 3.78 23

25 .49 .58 .66 .74 .82 1.05 1.47 1.60 2.45 3.13 3.80 4.10 25

27 .53 .62 .71 .80 .88 1.15 1.58 1.72 2.63 3.35 4.06 4.37 27

29 .57 .67 .76 .86 .95 1.21 1.70 1.85 2.83 3.61 4.40 4.72 29

31 .60 .72 .81 .91 1.01 1.30 1.81 1.97 3.02 3.84 4.66 5.00 31

33 .64 .75 .86 .97 1.07 1.37 1.90 2.08 3.17 4.02 4.85 33

35 .68 .80 .92 1.03 1.14 1.45 2.03 2.21 3.41 4.27 5.16 35

37 .71 .84 .96 1.08 1.19 1.52 2.11 2.30 3.48 4.39 5.24 37

40 .77 .91 1.04 1.16 1.29 1.64 2.28 2.50 3.77 4.76 40

45 .86 1.02 1.15 1.30 1.43 1.83 2.53 2.75 4.15 5.21 45

50 .95 1.12 1.27 1.37 1.58 2.00 2.78 3.02 4.52 5.65 50

Oil cup or brushlubrication

Bath or Splashlubrication

Pump lubricationConsult your engineering

department for proper methodof lubrication

3/8" PITCH HP per inch of width based on no. of teeth in small sprocket

RPMNo.Teeth

300 600 1200 1800 2400 3000 3600 4200 4800 5400 6000 6600 7200 7800 8400

19 2.4 4.8 9.6 14 19 23 27 31 34 37 39 41 42 43 42

21 2.7 5.4 11 16 21 25 29 33 36 39 41 42 43 42 40

23 2.9 5.9 12 17 22 27 32 35 39 39 42 43 42 40

25 3.2 6.4 13 19 24 29 34 37 40 39 43 42 40

27 3.4 6.9 14 20 26 31 36 39 41 39 42 40

29 3.7 7.4 15 21 28 33 37 40 42 39 41 37

31 4 7.9 16 23 29 35 39 41 43 39 38

33 4.2 8.4 16 24 31 36 40 42 42 40

35 4.5 8.9 17 25 32 37 41 43 42 38

37 4.7 9.4 18 27 33 39 42 42 40

39 5 9.9 19 28 35 40 42 42 38

41 5.2 10 20 29 36 41 43 41

43 5.5 11 21 30 37 41 42 40

silent chain horsepower rating tables



Bath lubrication is satisfactory for applications to the left of heavy line.

For HP values at higher speeds than shown, consult Engineering.


29/35I-29

SILENT CHAINHORSEPOWER RATING


RPMNo.Teeth

300 600 900 1200 1500 1800 2100 2400 2700 3000 3600 4200 4800 5400 6000

19 5.4 11 16 21 27 32 37 41 46 50 58 65 71 76 78

21 6 12 18 24 29 35 40 45 50 55 63 70 75 78 79

23 6.5 13 19 26 32 38 43 49 54 59 67 73 78 79 78

25 7.1 14 21 28 34 41 47 52 58 63 71 76 79 79

27 7.7 15 23 30 37 44 50 56 61 66 74 78 79

29 8.2 16 24 32 40 47 53 59 65 69 76 79 78

31 8.8 17 26 34 42 49 56 62 68 72 78 79

33 9.4 19 28 36 44 52 59 65 70 74 79 78

35 9.9 20 29 38 47 55 62 68 73 76 79

37 10 21 31 40 49 57 64 70 75 78 79

39 11 22 32 42 51 60 67 72 76 79 78

41 12 23 34 44 54 62 69 74 78 79

43 12 24 35 46 56 64 71 76 79 79

3/4 INCH PITCH HP per inch of width based on no. of teeth in small sprocketRPM

No.Teeth

200 400 600 900 1200 1500 1800 2100 2400 2700 3000 3300 3600 3900 4200

19 6.7 13 20 30 39 48 56 64 71 77 82 85 88 89 89

21 7.4 15 22 33 43 52 61 69 76 81 86 88 89 89 86

23 8.1 16 24 36 46 57 66 74 80 85 88 89 88 85

25 8.8 18 26 38 50 61 70 78 84 88 89 88 85

27 9.5 19 28 41 54 65 74 81 87 89 89 85

29 10 20 30 44 57 68 78 84 88 89 86 80

31 11 22 32 47 60 72 81 87 89 88 82

33 12 23 34 50 63 75 83 88 89 85

35 12 24 36 52 66 78 86 89 88 81

37 13 26 38 55 69 80 87 89 85

39 14 27 40 57 72 83 89 89 8241 14 28 42 60 75 85 89 87

43 15 30 44 62 77 86 89 84


RPMNo.Teeth

200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400 2600 2800 3000

19 11 21 31 41 51 60 68 75 82 88 93 96 99 100 99

21 12 23 34 45 55 65 74 81 88 93 97 99 99 98 95

23 13 25 37 49 60 70 79 86 92 97 99 99 98 93 86

25 14 27 41 53 64 75 83 91 96 99 99 97 93 85

27 15 30 44 57 69 79 88 94 98 100 98 93 84

29 16 32 47 60 73 83 91 97 99 99 94 85

31 17 34 50 64 77 87 94 99 99 96 88

33 18 36 53 67 80 90 97 99 98 91

35 19 38 55 71 83 93 98 99 95 85

37 20 40 58 74 87 95 99 98 90

39 22 42 61 77 89 97 99 95 84

41 23 44 64 80 92 98 99 92

43 24 46 66 83 94 99 97 87



Bath lubrication is satisfactory for applications to the left of heavy line.

For HP values at higher speeds than shown, consult Engineering.


30/35I-30

SILENT CHAIN SPROCKETS3/16" PITCH

No. ofTeeth

Max. HubDiameter

Max.Bore

No. ofTeeth

Max. HubDiameter

Max.Bore

No. ofTeeth

Max. HubDiameter

Max.Bore

11 .415 1/4 19 .899 9/16 27 1.365 15/16

12 .474 9/32 20 .949 5/8 28 1.425 1

13 .533 11/32 21 1.008 11/16 29 1.484 1

14 .593 3/8 22 1.068 3/4 30 1.544 1 1/16

15 .652 13/32 23 1.127 13/16 31 1.603 1 1/16

16 .711 15/32 24 1.186 13/16 32 1.663 1 1/8

17 .770 1/2 25 1.246 7/8 33 1.723 1 1/4

18 .830 9/16 26 1.306 7/8 34 1.782 1 1/4

Maximum Hub Diameter = Pitch Diameter - .250

3/16 " pitch drives

sprocketsAll 3/16" pitch silent chain sprockets are supplied, made-to-order, to customer specication. They are normallymanufactured from steel although large quantities may be furnished in gray cast iron. Steel sprockets may behardened at extra cost.

To order, specify: quantity, chain size and/or nominal width, number of teeth, hub type and dimensions, bore

size, keyseat, setscrews, and any special instructions.

sprocket face width

Nominal Widthof

Chain

Assemblyof

Links

Width of Sprocket Face

OutsideGuide Type

CenterGuide Type

5/32 2 & 3 .075

7/32 3 & 4 .138

9/32 4 & 5 .201

11/32 5 & 6 .264

15/32 7 & 8 .390

19/32 9 & 10 .516 .625

25/32 12 & 13 .705 .813

31/32 15 & 16 .894 1.000

drive lubricationHorsepower Rating table indicates the various lubrication ranges fortypes of lubrication. A good grade of mineral oil of medium consistency isrecommended. A number of applications have been successful with the useof colloidal graphite where normal lubrication cannot be employed. Consultyour Morse Sales Engineer for assistance in very special applications.

Morse's tiniest chain gives positive drivesup to 10,000 rpm !Tiny, but with the strength of steel, this highly efcient 3/16"-pitch SilentChain transmits power as smoothly as a belt at speeds up to 10,000 rpm.It's available in every standard style: shroud, center guide, or duplex.Special chain materials are available for use in corrosive or extremelywearing conditions.

For Outside Guide For Duplex Chain

For Center Guide


31/35I-31


3/16" pitch silent chain sprocket diameters

No.of

Teeth

PitchDia.

Out-sideDia.*

OverPin

Dia.

No.of

Teeth

PitchDia.

Out-sideDia.*

OverPin

Dia.

No.of

Teeth

PitchDia.

Out-sideDia.*

OverPin

Dia.11 .665 .632 .691 75 4.478 4.467 4.546 139 8.296 8.288 8.36612 .724 .694 .761 76 4.537 4.526 4.606 140 8.356 8.348 8.42713 .783 .755 .821 77 4.597 4.586 4.665 141 8.416 8.408 8.48714 .843 .815 .888 78 4.657 4.646 4.726 142 8.475 8.467 8.54615 .902 .876 .946 79 4.716 4.705 4.785 143 8.535 8.527 8.605

16 .961 .937 1.012 80 4.776 4.765 4.846 144 8.595 8.587 8.66617 1.020 .996 1.069 81 4.836 4.825 4.905 145 8.654 8.646 8.72418 1.080 1.057 1.134 82 4.895 4.884 4.965 146 8.714 8.706 8.78519 1.139 1.116 1.191 83 4.955 4.944 5.024 147 8.774 8.766 8.84420 1.199 1.177 1.256 84 5.015 5.004 5.085 148 8.833 8.826 8.904

21 1.258 1.237 1.312 85 5.074 5.063 5.143 149 8.893 8.885 8.96322 1.318 1.298 1.377 86 5.134 5.124 5.204 150 8.953 8.945 9.02423 1.377 1.357 1.433 87 5.194 5.184 5.263 151 9.012 9.004 9.08224 1.436 1.417 1.497 88 5.253 5.243 5.323 152 9.072 9.064 9.14325 1.496 1.477 1.554 89 5.313 5.303 5.382 153 9.132 9.124 9.202

26 1.556 1.538 1.617 90 5.373 5.363 5.443 154 9.191 9.184 9.26227 1.615 1.597 1.674 91 5.432 5.422 5.501 155 9.251 9.244 9.32128 1.675 1.657 1.737 92 5.492 5.482 5.562 156 9.311 9.303 9.38229 1.734 1.717 1.795 93 5.552 5.542 5.621 157 9.370 9.363 9.44130 1.794 1.777 1.857 94 5.611 5.601 5.681 158 9.430 9.423 9.501

31 1.853 1.836 1.914 95 5.671 5.661 5.740 159 9.490 9.483 9.56032 1.913 1.897 1.977 96 5.731 5.721 5.801 160 9.549 9.542 9.62033 1.973 1.957 2.035 97 5.790 5.780 5.859 161 9.609 9.601 9.67934 2.032 2.016 2.096 98 5.850 5.840 5.920 162 9.669 9.661 9.74035 2.092 2.077 2.155 99 5.910 5.900 5.979 163 9.728 9.721 9.799

36 2.151 2.136 2.216 100 5.969 5.959 6.039 164 9.788 9.780 9.85937 2.211 2.196 2.274 101 6.029 6.019 6.098 165 9.848 9.840 9.91838 2.271 2.256 2.336 102 6.089 6.079 6.159 166 9.908 9.900 9.97939 2.330 2.315 2.394 103 6.148 6.138 6.217 167 9.967 9.960 10.03740 2.390 2.376 2.456 104 6.207 6.197 6.277 168 10.027 10.020 10.098

41 2.449 2.435 2.513 105 6.268 6.258 6.337 169 10.087 10.079 10.15742 2.509 2.495 2.575 106 6.328 6.318 6.398 170 10.146 10.139 10.21743 2.569 2.555 2.633 107 6.388 6.378 6.457 171 10.206 10.199 10.27644 2.628 2.614 2.695 108 6.447 6.437 6.518 172 10.266 10.258 10.33745 2.688 2.674 2.753 109 6.508 6.498 6.576 173 10.325 10.318 10.395

46 2.748 2.735 2.815 110 6.566 6.556 6.637 174 10.385 10.378 10.45647 2.807 2.794 2.872 111 6.625 6.615 6.695 175 10.445 10.437 10.51648 2.867 2.854 2.934 112 6.685 6.675 6.755 176 10.504 10.497 10.57549 2.926 2.913 2.992 113 6.745 6.735 6.815 177 10.564 10.557 10.635

50 2.986 2.973 3.053 114 6.805 6.795 6.876 178 10.624 10.616 10.69551 3.046 3.033 3.111 115 6.866 6.856 6.935 179 10.683 10.676 10.75552 3.105 3.092 3.173 116 6.924 6.914 6.995 180 10.743 10.736 10.81453 3.165 3.152 3.231 117 6.984 6.974 7.054 181 10.803 10.795 10.87454 3.225 3.213 3.293 118 7.044 7.034 7.114 182 10.862 10.855 10.93355 3.284 3.272 3.351 119 7.103 7.094 7.174 183 10.922 10.915 10.993

56 3.344 3.332 3.412 120 7.162 7.153 7.233 184 10.982 10.974 11.05357 3.404 3.392 3.471 121 7.222 7.214 7.292 185 11.041 11.034 11.11358 3.463 3.451 3.531 122 7.282 7.273 7.353 186 11.101 11.094 11.17259 3.523 3.511 3.590 123 7.341 7.334 7.411 187 11.161 11.154 11.23260 3.583 3.571 3.651 124 7.401 7.393 7.472 188 11.221 11.213 11.292

61 3.642 3.630 3.709 125 7.461 7.453 7.531 189 11.280 11.273 11.35162 3.702 3.690 3.771 126 7.520 7.512 7.591 190 11.340 11.332 11.41163 3.762 3.750 3.830 127 7.580 7.572 7.650 191 11.400 11.392 11.47164 3.821 3.809 3.890 128 7.640 7.632 7.711 192 11.459 11.452 11.53065 3.881 3.869 3.949 129 7.699 7.692 7.769 193 11.519 11.512 11.590

66 3.941 3.930 4.010 130 7.759 7.751 7.830 194 11.578 11.571 11.64967 4.000 3.989 4.068 131 7.819 7.811 7.889 195 11.638 11.631 11.710

68 4.060 4.049 4.129 132 7.878 7.870 7.949 196 11.698 11.691 11.76969 4.120 4.109 4.188 133 7.938 7.930 8.008 197 11.758 11.751 11.82970 4.179 4.168 4.248 134 7.998 7.990 8.069 198 11.817 11.810 11.888

71 4.239 4.228 4.307 135 8.057 8.050 8.127 199 11.877 11.870 11.94872 4.299 4.288 4.368 136 8.117 8.109 8.187 200 11.937 11.929 12.00073 4.358 4.347 4.426 137 8.177 8.169 8.24674 4.418 4.407 4.487 138 8.237 8.229 8.308

Diameterof shaft

KeywayWidth and Depth

1/2 - 9/16 1/8 x 1/16

5/8 - 7/8 3/16 x 3/32

15/16 - 1 1/4 1/4 x 1/8

Tolerances for Over Pin Diameter

All tolerances are negative

Number of Teeth Tolerance

Up to 63 .004

64 and over .005

over pin diameter tolerances Standard Keyways

*Outside Diameters are for Rounded Top Teeth

Blank Diameters = Outside Diameters + 0.15" Blank Diameter Tolerance + .000 - .005

Gauge Pin Diameter .125"

Maximum hub and dimensions shown on page I-30.


32/35I-32


1" FACE WIDTH FOR 3/4 AND 1 WIDE CHAINS

No.of

Teeth

CatalogNo.

PitchDia(In.)

TypeMin.PlainBore

Max.Bore

Standard Bore DiametersWith Std. KS and SS

HD LTBApprox.

Wt.

17 404-17 2.721 B 5/8 1 3/8 3/4-1-1 1/8-1 1/4 2 2 1/8 2

19 404-19 3.038 B 5/8 1 5/8 3/4-1-1 1/8-1 1/4-1 5/8 2 5/16 2 1/8 2.5

21 404-21 3.355 B 5/8 1 7/8 3/4-1-1 1/8-1 1/4-1 5/8 2 5/8 2 1/8 3.5

23 404-23 3.672 B 5/8 2 1/8 3/4-1-1 1/8-1 1/4-1 5/8 2 15/16 2 1/8 4.5

25 404-25 3.989 B 5/8 2 3/8 3/4-1-1 1/8-1 1/4-1 5/8 3 1/4 2 1/8 5.5

No.of

Teeth

CatalogNo.

PitchDia(In.)

Type

Bore Range in1/16 increments

Tapered BoreBushing No.

HD LTBApprox.

Wt.**Min. Max.

38 404-38 6.055 C 1/2 1 5/8 1615 3 1/8 1 1/2 4

57 404-57 9.076 C 1/2 1 5/8 1615 3 3/8 1 1/2 6

76 404-76 12.099 C 1/2 1 5/8 1615 3 3/8 1 1/2 9

95 404-95 15.122 C 1/2 2 1/2 2517 5 1 3/4 14.5

114 404-114 18.148 C 1/2 2 1/2 2517 5 1 3/4 21

2" FACE WIDTH FOR 1 1/4, 1 1/2 AND 2 WIDE CHAIN

No.of

Teeth

CatalogNo.

PitchDia(In.)

TypeMin.PlainBore

Max.Bore

Standard Bore DiametersWith Std. KS and SS

HD LTBApprox.

Wt.

17 408-17 2.721 B 7/8 1 3/8 1 1/8-1 1/4 2 3 1/8 319 408-19 3.038 B 7/8 1 5/8 1 1/8-1 1/4-1 5/8 2 5/16 3 1/8 4

21 408-21 3.355 B 7/8 1 7/8 1 1/4-1 5/8-1 7/8 2 5/8 3 1/8 4.5

23 408-23 3.672 B 7/8 2 1/8 1 1/4-1 5/8-1 7/8 2 15/16 3 1/8 6

25 408-25 3.989 B 7/8 2 3/8 1 1/4-1 5/8-1 7/8 3 1/4 3 1/8 7.5

No.of

Teeth

CatalogNo.

PitchDia(In.)

Type

Bore Range in1/16 increments

Tapered BoreBushing No.

HD LTBApprox.

Wt.**Min. Max.

38 408-38 6.055 C 1/2 1 5/8 1615 3 1/8 1 1/2 6

57 408-57 9.076 C 1/2 2 1/2 2517 5 1 3/4 13

76 408-76 12.099 C 1/2 2 1/2 2517 5 1 3/4 20

95 408-95 15.122 C 3/4 2 1/2 2525 4 1/2 2 1/2 21

114 408-114 18.146 C 3/4 2 1/2 2525 4 1/2 2 1/2 26.5

**Weights shown do not include bushings

Setscrew at 90 from keyseat.

1/2" pitch sprockets

standard bore tolerances

Finished Bore and Stock Rebore Minimum Plain BoreLength of

Bore, Inches

To and incl.

Diameter of Bore, Inches

UpThru 1

over 1thru 2

over 2thru 3

over 3thru 5

over 5Type

Sprocket All Bore Sizes1 .002 .002 .003 .004 .005 B +.002 .000

2 .002 .002 .003 .004 .005 C +.002 .000

3 .002 .0025 .003 .004 .005

4 .002 .003 .003 .004 .005

5 .002 .003 .003 .0045 .005

6 .003 .0035 .0045 .005

8 .003 .0035 .0045 .005

over 8 .004 .005 .005

Tolerance will be on the plus side of nominal bore diameters. Bore diameter tolerances less than these standards can be

held at moderate extra cost.

Type BTeeth Hardened HubProjection One Side

Type CGray Iron

Hub Central

* SPROCKETS ARE MADE TO ORDER.


33/35I-33


1/2 pitch sprockets

3 FACE WIDTH FOR 2 1/2 AND 3 WIDE CHAINS

No.

of

Teeth

Catalog

No.

Pitch

Dia.

(In.)

Type

Min.

Plain

Bore

Max.

Bore

Standard Bore Diameters

With Std. KS and SSHD LTB

Approx.

Wt.

19 412-19 3.038 B 1 1 5/8 1 5/8 2 5/16 4 1/8 4.5

21 412-21 3.355 B 1 1 7/8 1 5/8-1 7/8 2 5/8 4 1/8 6

23 412-23 3.672 B 1 2 1/8 1 5/8-1 7/8- 2 1/8 2 15/16 4 1/8 8

25 412-25 3.989 B 1 2 3/8 1 5/8-1 7/8- 2 1/8 3 1/4 4 1/8 10

No.

of

Teeth

Catalog

No.

Pitch

Dia.

(In.)

Type

Bore range in

1/16 incrementsTapered Bore

Bushing No.HD LTB

Approx.

Wt.**Min. Max.

38 412-38 6.055 C 1/2 2 1/2 2517 4 1 3/4 9

57 412-57 9.076 C 3/4 2 1/2 2525 4 1/2 2 1/2 14.5

76 412-76 12.099 C 3/4 2 1/2 2525 4 1/2 2 1/2 23

95 412-95 15.122 C 3/4 2 1/2 2525 4 1/2 2 1/2 27.5

114 412-114 18.146 C 15/16 3 3030 6 3 41

3 1/2 FACE WIDTH FOR 3 1/2 WIDE CHAINS

No.

ofTeeth

Catalog

No.

Pitch

Dia.(In.)

Type

Min.

PlainBore

Max.

Bore

Standard bore Diameters

With Std. KS and SSHD LTB

Approx.

Wt.

21 414-21 3.355 B 1 1/8 1 7/8 1 7/8 2 5/8 4 5/8 5

23 414-23 3.672 B 1 1/8 2 1/8 1 7/8-2 1/8 2 15/16 4 5/8 7

25 414-25 3.989 B 1 1/8 2 3/8 1 7/8-2 1/8 3 1/4 4 5/8 9.5

No.

of

Teeth

Catalog

No.

Pitch

Dia.(In.)

Type

Bore range in

1/16 incrementsTapered Bore

Bushing No.HD LTB

Approx.

Wt.**Min. Max.

38 414-38 6.055 C 1/2 2 1/2 2517 4 1 3/4 9.5

57 414-57 9.076 C 3/4 2 1/2 2525 4 1/2 2 1/2 16

76 414-76 12.099 C 3/4 2 1/2 2525 4 1/2 2 1/2 21.5

95 414-95 15.122 C 15/16 3 3030 6 3 36

114 414-114 18.146 C 15/16 3 3030 6 3 45.5

Keyseats

Diamof Shaft

Keyway*Width &

Depth

1/2 9/16 1/8 x 1/165/8 7/8 3/16 x 3/32

15/16 1

Documents

MCC10002 8586 Drive Components Catalog Section I r9 WEBcadena Silencisa