105707 Multi Pull Belts

8/4/2019 105707 Multi Pull Belts

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St a n d a r d s : I SO 9 9 8 2 , R M A I P - 2 6 , D I N 7 8 6 7

MULTI - PULL

POLY - V BELTS



FEATURES

COMPACT DRIVE

POLY-V belt is highly flexible and hence can be used wi

smaller pulley diameters to give a lighter and compact drive.

HIGHER POWER40% higher power rating per unit width compared

conventional V-belts.

ZERO SLIPPAGE

Almost eliminates the slippage due to maximum wed

contact on the pulleys.

ENERGY SAVING

Maximum returns with energy saving upto 6%.

REAR SIDE DRIVE

Being thinner the rear side can be used to drive addition

accessories / idlers without affecting life.

HIGHER BEARING LIFE

Lesser static tension gives higher bearing life.

SILENT DRIVE

Gives vibration and noise free power transmission in eve

application.

SINGLE BELT

Eliminates the necessity to use multiple / matched set belts.

HIGHER SPEED

Can be used at higher speed more than 40 m/sec.

LONGER LIFE

Gives lesser wear and longer life to the pulleys due to lesse

static tension and belt slippage.

LOW DOWNTIME & REPLACEMENT COST

Reduces downtime and also belt replacement cost.

FENNER MULTI - PULL POLY-V BELTS

SECTION PITCH(P) THICKNESS(T) MAX .NO OF(mm) (mm) RIBS/SLEEVE

PH 1.60 2.90 24

PJ 2.34 3.80 96

PK 3.56 4.50 24

PL 4.70 7.00 50

PM 9.40 13.50 40

Polychloroprene Rib Rubber

High Modulus Polyester Cord

Polychloroprene adhesion compound

Polyester cotton fabric

PP P

o40

(No. of Ribs X P)

T

The name Fenner has been synonymous with quality and

reliability in Mechanical Power Transmission Products for

over 140 years. Fenner V-belts, Pulleys, Couplings and Gear

Boxes have become the industry bench marks over the years

manufactured in state-of-art facilities conforming to quality

standards ISO-9001:2000 & ISO/TS-16949:2002 along with

ISO 14001:1996 for Environmental Management System.

Fenner has the unique distinction of being the only company in

India to be accredited with API certification.

Multi-Pull Ribbed belts offer high power capacity in a single

flexible low stretch belt. The continuous high tensile synthetic

cord makes maximum utilization of the face width and ensures

a uniform tension throughout the belt.

There are five sections available:

PH- Fractional Horse Power belt for very light duty

applications.

PJ - Low cost belt for light duty applications.

PK - Designed specifically for the automotive industry, it is

also suitable for Machine Tool drives etc.

PL - Medium duty drive belt covering a wide range of

applications.

PM - High performance makes this belt unrivalled for heavy

duty applications.




PL

Effective Length

mm inch

50

52.554555658

61.563.565.567.5

7172.576.5

7879.581.582.5

8486.5

8891.5

9397.5

99106.5

108112114115118

121.5123

129.5131

137.5145.5

159.5165176182198212240241271301331361391421481541550551

1270

133413721397142214731562161316641715180318421943198120192070209621342197

22352324236224772515270527432845289629212997308631243289332734933696

4051419144704623502953856096612168837645840791699931

1069312217137411397013995

PJ

Effective Length

mm inch

19

202223242628

28.530323436373840

41.543

43.544

44.545464748

48.54950

50.551

51.5525354555658

6162.565

65.56973

74.57577

77.578.5

82878990929496

98100

483

508559584610660711724762813864914940965

10161054109211051118

11301143116811941219123212451270128312951308132113461372139714221473

154915881651166417531854189219051956196919942083221022612286233723882438

24892540

PH

Effective Length

mm inch

52

535455565861

62.565.5

6973

74.5757677

77.578

78.579

8081828384858687888990919293949596

979899

100

1321

134613721397142214731549158816641753185418921905193019561969198119942007

20322057208321082134215921842210223522612286231123372362238824132438

2464248925152540

STANDARD BELT LENGTHS

PK

Effective Length

mm inch2426

26.527

27.528

29.130

30.531.132.233.134.334.835.5

3636.5

3737.6

38.23940

40.641.542.543.745.145.9

4748.449.5

5152.553.554.656.157.5

58.960.261.4

6465.366.267.969.370.7

7273.374.8

7676.777.2

7880.7

82.784.486.888.991.793.996.197.699.3

101.8102.8105.5111.6

112114115118

610660

673686699711739762775790818841871884902914927940955

9709911016103110541080111011461166119412291257129513341359138714251461

14961529156016261659168117251760179618291862190019301948196119812050

21012144220522582329238524412479252225862611268028352845289629212997

PM

Effective Length

mm inch

91

9499106

111.5115

118.5123131139147161165176183198213241271

301331361391421481541550551

2311

238825152692283229213010312433273531373440894191447046485029541061216883

7645840791699931

1069312217137411397013995

Sizes not listedcan also be suppliedsubject to minimumorder quantity.Consult Fenner

1N1N1N1NN 11N1N1N

2828282828282828

L - LFEN E UN R M TI UP 21PL L 0 190

T P LN UFE NER M L I - LU P 021 L 19 0N IFE ER UN M LT - PUL 21PL L 1900

U UEF NNER M LTI -P LL 21PL 0190F N M 2 00EN ER ULTI ULL- P PL1 19

L - LN RFE NE MU UTI P PL 21 L 1900E T P L

FE NN R MUL I - UL 2 L 11P 900E N M LF N ER U TI - 1P 9PULL 2 L 1 00



20

38

100

224

40

75

200

375

PJ

PK

PL

PM

Idler on Inside Idler on OutsideSection

Minimum Diameter (mm)


1. PULLEYS

Before assembling the drive, check the pulley

grooves are free from scores or sharp edges, and

are dimensionally correct.

2. ALIGNMENT

Good alignment of pulleys prior to belt installation

is important. The pulleys may be aligned byplacing a straight edge or cord along the edges.

The shafts must also be parallel and in the same

plane.

3. BELTS

When pulleys have been correctly positioned on

the shafts, the belts can be installed to complete

the drive. The drive centre distance should be

reduced prior to the installation of the belts so that

they may be fitted without the use of force. Under

no circumstances must belts be prised into the

grooves. Belt and pulley grooves can easily be

damaged by using sharp tools to stretch the belts

over the pulley rim.

The installation allowance given in the table below

is the minimum recommended reduction in centre

distance for the various belt section and lengths to

allow for correct fitting.

INSTALLATION INSTRUCTIONS5. IDLER PULLEYS

If idler pulleys are used it is recommended that they

be as large a diameter as practical. All idlers should

be located on the slack side of the drive. When used

on the inside the idler should have the same groove

profile as the driver and driven pulleys. The pulley

should be positioned as close as possible to the

large pulley. Minimum pitch diameters are listed in

the table below. When using on the outside, the idler

should be flat (not crowned) and positioned as close

as possible to the small pulley.

Minimumeffective

diameter of Pulley (mm)

13 20 50 75 180

PH PJ PK PL PM

SERPENTINE DRIVES -For selection Consult Fenner

Multi-Pull is a flexible belt and can be reverse bent

round a pulley. The outside of the belt can be used to

drive. This enables Multi-Pull to be used on Multi-

Pulley or Serpentine Drives.

The take-up allowance given in the same table

should be added on to the calculated centre

distance to allow for belt stretch. Rotate the drive

while tightening the belt in order to equalize the

tension.

The belt should be run under load and observed

during the first few hours. After several hours

running re-check the tension, it may be necessary

to take up adjustment to compensate for normal

drop in tension during the running in period.

4. GUARDS

Where guards are necessary it is desirable to use

the mesh type to permit adequate ventilation.

DESIGNATION OF BELTS

Effective length (mm)

METRIC : 6 PJ 1308

No.of ribs

Belt profile

IMPERIAL : 515 PJ 6

No.of ribs

Belt profile

Effective length(51.5 Inches)






Pulleys should be mounted as close as possible to the

bearings to reduce overhung load.

The maximum axial misalignment allowed is 3 mm per

metre centre distance ( maximum 15 mm ).

Shaft parallelism must be kept within 2 degree.

TENSIONING THE BELT

Fenner Multipull Belts must be tensioned correctly and with

great care. The under or over tensioning can cause

functional problems and lead to premature belt failure.

We recommend the elongation method, which is simple

and requires no special equipment.

1.Fit the belt on the pulleys with no tension.

2.Draw two lines perpendicularly across the back of thebelt about 80% of the belt span apart (or one metre apartfor very long spans).

3.Increase the distance between the two lines by 0.5 to0.75% i.e. by 5mm to 7.5mm for an initial spacing of 1000 mm.

4.Run the drive under load for about 10 minutes.

5.Check the tension of the belt (i.e. the spacing betweenthe two lines) and readjust if necessary.

Generally the tensioning values for each section are

maintained as under:

1000 mm

1007.5 mm

0.6%

PMPLPK

0.6%0.6%0.5%

PJ

C after Take-up

Calculated C

C For Fitting

M

T

Belt Length(mm)

< 750

750 - 12001200 - 2000

2000 - 3500

3500 - 6000

> 6000

M

-10

-10-15

-20

T

+10

+15+20

+30

M

-11

-12-16

-23

T

+13

+16+22

+32

M

-40

-50

-100

T

+50

+70

+130

T

+20+25

+35

+50

M

-15-20

-30

-40

PJ PK PL PM

Centre Distance Adjustment :Fitting and Take-Up Recommendations

C. L. Shah & Co.

137, Canning Street, Kolkata - 700 001Phone: 2243 1198 / 3363, Fax: 2230 2678

Mobile: 98300 42037, Email: [email protected]

Documents

105707 Multi Pull Belts