Technical Information · 2020. 1. 28. · Metal Metal Metal to metal contact area "Amonton and Coulomb's Law" 1. Frictional force is proportional only to the vertical load applied

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278-335_スライドシフター.indd 335 19/10/17 20:33

Technical Information

336

Foundation of Tribology …………………… P.337Selection and Design of Oiles Bearings … P.339Cooling fit and Press Fitting ……………… P.345Press fitting Procedure ……………………… P.346Service Life of Oiles Bearings and Clearance … P.347Fitting Standard Table ……………………… P.348Corrosion Resistance of Base Resin and Base Metal used for Oiles Bearings … P.361Unit Conversion Table ……………………… P.363Storage Instructions ………………………… P.364

336-365_技術資料.indd 336 19/09/19 10:27

On DesignThere is no specific method for sellection and designing of self-lubricating bearings which is a very important element in any machinary. However, selection of highly credible bearing is possible if fundamental requirements for bearing design are studied based on design process. Here, fundamentals of tribology and fundamentals of design items will be discussed in order to improve bearing design.

■Contact of two solid surfaces

Foundation of Tribology

■Lubrication Mechanism

When lubrication film exists between two relatively moving surfaces, friction conditions of two contact surfaces can be classified in three steps as below:1. Hydrodynamic lubrication2. Boundary lubrication3. Solid lubrication

Hydrodynamic LubricationLubrication film between the two contact surfaces is thick enough and two contact surfaces are separated completely by viscous oil film. At this moment, frictional force of two contact surfaces is determined by viscous resistance of lubricant and it can take a very small value (coefficient of friction ; 1 × 10－3 to 5 × 10－4). In hydrodyanmic lubrication, when shaft is rotated, the oil around the shaft also rotates due to the viscoity of the lubricant oil and generates oil pressure at the loaded area. This phenomenon is called wedge effect. Oil pressure P generated within lubricating oil film is affected by change of temperature and viscosity of lubricating oil, surface roughness and clearance "h" and the rotational speed of the shaft "v." Fig.2 shows the model of hydrodynamic lubrication.

Load WPlasticdeformation

Elastic deformation

Fig.1 Real contacts of two solid surfaces

Fig.2 Distribution of oil film pressure under hydrodynamic lubrication

Oil film pressure P

Wedgeeffect

V

h

Load W

Lubricant oil

Contact of two solid surfacesNo matter how smooth the surface may appear, there are roughness and winding on the surface of the solid body. When two surfaces come into contact, they are actually the contacts between the rough projections of the two surfaces. Therefore, of the total area of the two surfaces the area that is actually in contact with each other is limited. As such even if the load is very small, there is strong pressure on the actual points of the contacts.These very limited minute areas of the contacts take charge of friction between the two solid bodies, surface damage and interaction of two solid surfaces. As the load increases, projected areas of the contact surfaces go through plastic deformation and consequently the area that bears the load is expanded. As the hardness increases, the area is decreased. These points that actually contact and support the load are called "Real Contact Points." The total sum of the contact points is called "Real Contact Area." The contact supporting area that is determined by geometric appearance is called "Apparent Contact Area."Fig.1 shows a model of the contact.

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336-365_技術資料.indd 337 19/09/19 10:27

■Friction and Wear

There are two contradictory theories that attempt to explain mechanism of friction between the two solid surfaces. One is a theory based on concavity and convexity of solid surface. The other is a theory based on adhesion. This theory accounts adhesion which takes place between the two convex parts as a cause of friction. Recently, the adhesion of two solid surfaces is considered to be the main cause of the friction. According to the theory of adhesion, contacts of convex parts of two solid bodies consists of minute real contact points as shown in Fig.4. The very tops of convex parts are constantly squashed and generate adhesion to each other forming a junction. A relative motion breaks this junction. As such, adhesion and disjunction repeatedly occurs. Sum of the force needed to detach this adhesion is friction force. The generation of wear particles at this moment as "free wear pieces" results in wear.

Boundary LubricationLubricating oil film between the two contact surfaces is extremely thin and no viscous hydrodynamic oil film exists between the two. As shown in the Fig.3, only film of absorbed oil molecules exists. Absorptive oil film is arranged oil molecules that are adhered onto the solid surfaces and its shear resistance is greater than hydrodynamic oil film. Frictional force in this area, compared to hydrodyanamic lubrication, is greater (coefficient of friction ; 5 × 10－2 to 5 × 10－1). In the frictional contact points such as real contact points, oil film is frequently broken. The lubrication condition that generates a frictional condition such as this is called "Boundary Lubrication." In order to decrease the friction under this condition, selection of self-lubricating bearing may be desirable.

Solid lubrication (Dry friction area) This is a condition in which two solid surfaces come into contact directly with each other. In this condition, there is no lubricating film such as hydrodynamic film or absorptive oil film. An empirical law by Amonton (1663-1705) and Coulomb (1736-1806) explains the principles of dry friction as below.

Fig.3 Modle of absorption of oil molecule in boundary lubrication

Sliding directionOxide layer

Load W

Absorbed oil molecule

Metal

Metal

Metal to metalcontact area

"Amonton and Coulomb's Law"1. Frictional force is proportional only to the vertical load applied to the

contact surface of the solid body and is independent of apparent contact area.

2. Coefficient of friction is independent of the sliding velocity.3. Under the same condition, the static friction (force required to

generate sliding) is greater than kinetic (force required to maintain sliding) friction. Mechanism of friction by adhesive theory

Adhesivearea

Junction

Free wear particle

JJA

A

A

B

B

B

Sliding direction

Fig.4 Mode of producing wear particles by adhesive friction

338

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336-365_技術資料.indd 338 19/09/19 10:27

On Design

Design and required performance features

Determination of recommended Oiles bearings

Determination of rough layoutDetermine I.D., O.D., length of the bearing, material of the mating shaft and lubrication method.

Selection of primary materialStudy whether each design factor falls within each allowable limit. Then decide the material.

Confirmation of existing data and characteristics of the bearingConfirm initial characteristics based on the test data and verify estimated service life and durability of the bearing.

Study of application conditionStudy allowable P,V, PV value, operating motion, frequency, availability of oiling, environmental conditons, temperature, foreign particles, corrosion resistance and chemical resistance. Study dynamic load,static load, impact load, static stress and impact strength.

Confirmation of application environment and design specificationsSpecial enviroment: high/low temp.,underwater, chemical liquid

Attention should be paid to special environment.

Study of configuration design, detail design and standard productsConfirm and verify material, strength, rigidity, accuracy of housing and the mating shaft. Confirm and verify bearingaccuracy, clearance, oil grooves and oil holes. Study restictons on bearing material manufacturing.Study possibility of standard products.

YES NO

■P / V / PV value: Contact pressure P which is obtained by dividing maximum load (w)

by projected loading area. (φdxL)

: Relative velocity between the bearing and the mating shaft.

: Product of the contact pressure P and the velocity V. This is the most important value in selecting bearing.

These values are not independent allowable values but are interrelated design values. When designing, values should fall under the range as shown in this graph.

Each value should be obtained based on the formula listed on the next page.

Allowable PV value

Allowable max.PV value

Service range

P

V

Pmax.

Vmax.

For customized products and inquires, please contact an Oiles representative.

P

V

PV value

Normal environment: room temp, atmospheric air

Allowable max. PV value ＜ allowable max. contact pressure ： P max. × allowable max. velocity ： V max.

Selection and Design of Oiles Bearings

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｛｝

■Calculation of P / V / PV value

Radial journal oneway rotation

： N {kgf}： mm： mm

LoadI.D.

Length

WφdL

： N {kgf}： s－1 {rpm}： mm： mm

LoadRotating speed

LengthI.D.

WnLφd

Bushing P N/mm2［kgf/cm2］ V m/sec［n/min］ PV N/mm2・m/sec［kgf/cm2・n/min］

Washer P N/mm2［kgf/cm2］ V m/sec［n/min］ PV N/mm2・m/sec［kgf/cm2・n/min］

Oscillation

Reciprocation

Thrust motion

Reciprocation

： s－1 {rpm}： mm

Rotating speedI.D.

nφd

： N {kgf}： s－1 {cpm}： rad { ° }： mm： mm

LoadCycle speed

Oscillating angleLength

I.D.

Oscillating cycle speedOscillating angle

I.D.

WcθLφd

： s－1 {cpm}： rad { ° }： mm

cθφd

： N {kgf}： s－1 {cpm}： mm： mm： mm

LoadCycle speed

Stroke distanceI.D.

Length

WcSφdL

： s－1 {cpm}

： mm

Reciprocationcycle speed

Stroke distance

c

S


LoadLengthWidth

WLB

： N {kgf}： s－1 {cpm}： mm： mm： mm

LoadCycle speed

Stroke distanceLengthWidth

WcSLB

： s－1 {cpm}： mm

Cycle speedStroke distance

cS


LoadI.D.O.D.

WφdφD

： N {kgf}： s－1 {rpm}： s－1 {cpm}： rad { ° }： mm： mm

LoadRotating speed Cycle speed

Oscillating angleI.D.O.D.

WncθφdφD

： s－1 {rpm}： s－1 {cpm}： rad { ° }： mm

Rotating speedCycle speed

Oscillating angleO.D.

ncθφD

=5 （N/mm2）20×101000 =0.126 （m/sec）103

π×20×2 =0.63 （N/mm2・m/sec）103×20×100π×20×1000×2

Case:1I.D. 20mm, length 10mm at 1000N journal load.

Case:2I.D. 20mm, rotating speed 120rpm.

Case:3I.D. 20mm, length 10mm, rotating speed 120rpm, 1000N journal load.

,P=φd×LW

φd×L102 W

,V= 103π φd n

103π φd n

,PV= 103×Lπ W n

10×Lπ W n


LoadI.D.

Length

WφdL

,P=φd×LW

φd×L102 W


LoadI.D.

Length

WφdL

103×φd×LW φd c θ｛｝,PV= 18×102×φd×Lπ W φd c θ

,V= 1032 c S

1032 c S

,V= 1032 c S

1032 c S

,PV=103×B×L2 W c S

5×B×LW c S

,V= 103φd c θ

180×103π φd c θ

,P=φd×LW

φd×L102 W

,P= B×LW

B×L102 W

,P=π×（φD2－φd2）4W

π×（φD2－φd2）400W

,V= 103π φD n

103π φD n

,PV=103×（φD2－φd2）4 W φD n

103×（φD2－φd2）400 W φD n

,PV=103×π（φD2－φd2）4 W φD c θ

180×103×（φD2－φd2）400 W φD c θ

,V= 103φD c θ

180×103π φD c θ

,P=π×（φD2－φd2）4W

π×（φD2－φd2）400W

Rotation Rotation Rotation

Oscillation Oscillation Oscillation

,PV=103×φd×L2 W c S

5×φd×LW c S

Plate P N/mm2［kgf/cm2］ V m/sec［n/min］ PV N/mm2・m/sec［kgf/cm2・n/min］

W

φdL

W

φdLL

W

φdL

φDφ

d

W

W

BL

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336-365_技術資料.indd 340 19/09/19 10:27

On Design

■Operating motion and PV value

■Environmental temperature and PV value

PV value listed in this catalogue is allowable PV value for radial journal rotational operation. Depending on the operation motion, allowable PV value should be designed with more leeway based on the standard below.

Service temperature range listed in the catalogue indicates heat resistance derived from the material and the structure of the bearings. Depending on the environmental temperature, it is necessary to design the bearing based on below conditions.

When a bearing is used in high temperature:●PV value should be set at low level as decline of the frictional character-

istics and difficulty in frictional heat diffusion may be anticipated. ●Decline in the hardness of the bearing material should be taken into

account. ●Clearance decrease caused by the dimensional change of the bearing

and the mating shaft due to heat expansion should be considered. ●In order to prevent sliding at the outer diameter and falling off of the

bearing, lock screw or detent screw should be implemented taking press fitting interference decrease caused by stress relaxation of the bearing into account.

When a bearing is used in low temperature: ●Study impact strength and brittleness of the bearing material in low

temperature ●Study clearance decrease caused by the heat shrinkage of the inner

diameter of the bearing. ●Study decline of the fixed force which is brought about by the decrease

in the interference with the housing.

Compared to the metallic bearing, plastic bearing (especially thermoplastic resin material) has the lower melting point and therefore, is prone to heat effect. As heat expansion coefficient is big, attention should be paid in fitting design such as stress relaxation, decrease in clearance due to temperature change and others.


Bushing Plate Washer

0 1.00.80.60.40.2

Reciprocation 1 : stroke/bearing length＜2Reciprocation 2 : stroke/bearing length＞2

Shaft rotation

Bearing rotation

Shaft oscillation

Bearing oscillation

Reciprocation 1

Reciprocation 2

Minute oscillation

0 1.00.80.60.40.2

Reciprocation 1

Reciprocation 2

Minute oscillation

0 1.00.80.60.40.2

Shaft rotation

Bearing rotation

Shaft oscillation

Bearing oscillation

Minute oscillation

Reciprocation 1 : stroke/bearing length＜2Reciprocation 2 : stroke/bearing length＞2

※Values in the chart are to be used only as a guide when allowable PV value of bushing at shaft rotational motion is 1.

Mode of motion

Coefficient of load

Mode of motion

Coefficient of load

Mode of motion

Coefficient of load

Room temp. Allowable max. temp.

Allowable PV value

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■Operation interval and PV valueIn the operation of the bearing, there are continuos and intermittent opera-tions.In general, an intermittent operation with some intervals creates favorable condition for the better results because suspension of operation cools down the temperature of the friction surface. However, this frequent start and stop increases wear by inadequate lubrication. It causes galling or seizure at the time of start. A self-lubricating bearing supplies lubricating oil or forms solid lubrication film onto the frictional surface and prevents drop in the bearing perfor-mance even in such an inadequate lubrication operation.The diagram shows influence of intermittent motion and continious motion on PV characteristic in the radial journal rotational motion and oscillating motion of Oiles 500SP. Self-lubricating bearing has higher limit PV value as the stopping interval is increased.

■Selection of mating materialsBearing performance is influenced by the material, hardness, surface roughness and surface treatment of the mating shaft. In order to select appropriate mating material, please refer to the below.

■Foreign particle tolerance (resistance)Although contamination by foreign particles do not affect the performance of self-lubricating bearings compared to the ball bearings, it may deteriorate performance of the bearing. Following measures are recommended:

●Surface hardening treatment such as induction hardening, as well as carburizing should be implemented onto the mating shaft. ●At the both ends of the bearing, install dust seal and fill with grease. ●Periodic greasing prevents contamination of foreign particle and helps discharging of the foreign matters.

Influence of operation mode on PV value.

00

4.9

9.8

14.7

19.6

24.5

30 60 90 120150180210Cycle〔cpm.〕C

ontact pressurec N/mm2

500 hour continious operation2 sec. operation and 5 sec. interval

1 sec. operation and 6 sec. interval

1 sec. operation and 12 sec. interval

Up to 24.5{250}

24.5{250} to 49.0{500}

49.0{500} to 98.0{1,000}

Up to 49.0{500}

49.0{500} to 98.0{1,000}

Bearing HardnessContact pressureN/mm2 {kgf/cm2}Surface roughness

Ra(Ry)Material

Less than1.6a（6,3s）

Less than0.8a（3.2s）

For the plastic bearing OILS 480, use mating material of more than 45HRC hardness.

150HBW or over

250HBW or over

50HRC or over

120HBW or over

45HRC or over

Carbon steel for machine structure alloy steel（S45C、SNC415、SCM435）Stainless steel.

Surface hardening treatment such as induction hardening and carburizing should be implemented for carbonsteel for machine and alloy steel.

In addition to surface hardening treatment as above, additional surface treatment such as nitriding treatment and hard chrome plating should be implementd.

Carbon steel for machine structure alloy steel（S45C、SNC415、SCM435）Corrosion resistant steel.（SUS304、SUS316）

Surface treatment such as induction hardening, quenching by carburizing and hard chrome plating should beimplemented for carbonsteel for machine and alloy steel.

Metallic

Bearings

Plasticand

Multi-layer Bearings

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336-365_技術資料.indd 342 19/09/19 10:27

On Design

■Bearing configuration


※Influence of the bearing length described here is reference.

LengthIn general, length of the bearings is calculated by the ratio of the bearing length (L) and I.D. (D) of the bearing. (L/D)

For geneal use : L/D= 0.5 to 2.0. For high load, high velocity, uneven contact : L/D=0.8 to 1.0.

L / D : SmallSmallLargeHighSmallLargeLarge

L / D : LargeLargeSmallLowLargeSmallSmall

Effect of bearing lengthOil film formation capability

Heat radiation

Safety margin for eccentric load

Vibration damping

Space saving

Discharge of particles

（Unit : mm）

Wall thicknessWall thicknes of the bearings can be made thinner to realize smaller design.

ID and wall thicknessOil impregnatd metallic bearing

Plugged metallic bearing

Plastic bearing (machined )

Plastic bearing （molded) Multi-layer bearing

Composite bearing （Hiplast）

φ30020 to 2520 to 3020 to 25（20 to 30）

－

φ1007.5 to 12.510 to 157.5 to 12.55 to 102.5

φ505 to 7.57.5 to 105 to 7.53 to 52 to 2.5

φ202 to 43 to 52 to 41 to 31.5

φ102 to 33 to 42 to 31 to 20.5 to 10.5 Regardless of bearing diameter, wall thickness is 0.5mm

ChamferingBoth ends of bearings are chamfered to avoid stress concentration.

Bearing ID φdUp to φ80φ80 to φ200φ200 to φ300

Over φ300

Chamfer size of ID and OD C0.5

C1.0

C1.5

C2.0

（Unit : mm）

t=（0.05 to 0.07）d+（2 to 5）mm

I.D.Chamfer

I.D.Chamfer

O.D.Chamfer

O.D.Chamfer

L

φD (I

.D.)

I.D. φ

dI.D

. φd

Wal

l thi

ckne

ss t

OILES 500 The shape of The Chamfering.Placement of a solid lubricant is not plugged to both ends part.Therefore it do chamfering to a position of a plugged solid lubricant to prevent seize by partial metallic contact.

C

l～　C51

r

Sliding surface

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336-365_技術資料.indd 343 19/09/19 10:27

■Advantage of greasing (oiling)As described below, periodical greasing (or oiling) will improve the performance of self-lubricating bearings :

●Reduction of co-efficient of friction and wear amount ●Increase of allowable PV value●Improved reliability and safety ●Discharge of wear particles and improvement of foreign particle tolerance.●Rust-proof of the mating shaft ●Cooling effect

Lubricating oil : industrial lubricating oil ISO VG22 to 46 [kinematic viscosity 22 to 46 s+ / 40℃]Grease : Lithium based multi-purpose grease (with consistency of NLG 2 to 0)

※If operating temperature goes beyond 150℃, the grease which uses polyurea or bentonite as a thickner could be specified.

■Oil hole and oil groove designConfiguration of oil holes and oil grooves of the bearings should be designed as below: ●An oil hole and an oil groove should be at the same location avoiding the

point of maximum load. ●An oil groove in an axis direction should be 70 to 80 % of the bearing

length and all edges should be chamfered.●If lubricant is supplied from the housing, circumferential groove on the outer diameter should be designed in order to avoid inadequate lubrica-tion from clogged oil hole caused by shifting of the oil hole from the hous-ing oil path.

Bearing I.D.30 or less30 to 5050 to 8080 to 120120 to 180180 to 250250 to 315315 to 400400 to 500

Number of groove 1 to 233445688

H1.21.82.53.55.06.07.08.08.0

r1.52.03.03.54.05.06.07.08.0

R1.52.03.03.54.05.06.07.08.0

（Unit : mm）

Examples of typical dimensions of oil grooves:

Oil groove

Oil hole

Circumferential groove

H

R

r

Oil hole and oil groove

Cross sectional configuraton ofoil groove

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336-365_技術資料.indd 344 19/09/19 10:27

On DesignCooling Fit and Press Fitting

■Cooling fitThere are two methods to set Oiles bearings into a housing. One is called press-fitting. For press fitting, a mandrel and a press machine are used. The other is called cooling fit. The cooling fit uses liquid nitrogen or dry ice. Compared to press-fitting, cooling fit is efficient and achieves more accurate installation.Avoid shrink fitting as it may deteriorate bearing function.

■Cooling fit procedure1. Equipment and materials

●Refrigerant : liquid nitrogen, dry ice●Container : A chamber covered with heat insulator which is large

enough to accommodate bushings

2. Calculation of amount of shrinkage of outer diameter of bearing caused by cooling(△D)

　●Where outer diameter of bearing : D　●Where coefficient of thermal expansion of bearing :α　●Where atmospheric temperature : T0　●Where cooling temperature : T1　　△D ≒ D × α × （ T0 － T1 ）　Thermal expansion of Oiles 500SP ： α ＝ 2.2 × 10－5/℃ 　Thermal expansion of Oiles 500B ： α ＝ 1.8 × 10－5/℃　Thermal expansion of Oiles 500F ： α ＝ 1.2 × 10－5/℃　※For other materials, please refer to the mechanical properties of each product.

　Example : Material Oiles 500B 100 I.D. × 130 O.D. × 100 L 　　By cooling, temperature goes down to －70 ℃ from 20 ℃　　△D ＝ 130 × 1.8 × 10－5 × （20 －（－70））＝ 0.211mm　　※For the bearing whose diameter exceeds φ500 mm, consult an Oiles representative.

3. Operation procedure

1. As a cooling agent, use liquid nitrogen or dry ice. The standard cooling temperature is －40 ℃ to －70 ℃.

2. Cooling time should be more than one hour. Cooling time needs to be longer if the interference is larger, depending on applicable fitting tolerance. In addition to the cooling fit, press fitting should be used if cooling time needs to be shortened.

3. Measure and confirm outer diameter of the bushing and inner diam-eter of the housing before cooling. If any defect is found during fitting, it may develop into a major trouble.

4. Bushing should be inserted into the housing soon after taking it out from the cooling agent in a chamber. If stopped during fitting, dimen-sion of the busing goes back to its original size and it is extremely difficult to withdraw the bushing from the housing and do the fitting again.

5. Apply lubricant onto the sliding surface.

Note : Warm housing up to 20 ℃ to 30 ℃ if sufficient temperature gap could not be maintained as in winter.

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336-365_技術資料.indd 345 19/09/19 10:27

Usually, Oiles bearings are press-fitted into the housing. For this proce-dure, a mandrel and a press machine are used. In case of a metallic bearing with large press fitting interference, chamfer outer diameter of the bearing and inner diameter of the housing. Then use a mandrel to facilitate easier press fitting.

■Press fitting procedure : Calculation of press fit forceWhen a bushing is press fitted into a housing with some interference, the bushing I.D. becomes smaller than the original size. Amount of this inner diameter change depends on the dimension of the housing, the bushing (thickness and shape), and the material.Testing by dimension and by material is required in order to determine precise change. However, it is not feasible to conduct tests for all the combinations of materials and dimensions. Therefore amount of inner diameter change is determined based on the below formula.

Load

Mandrel

BushingChamfer

Housing

Bushing

Housing

σn

σb

P

φd

φD

tb

Stress distribution of cylindrical combination

VbtbEbDVhEhDhP

KbKhFLμS△d

: Poisson's ratio of bushing （refer to table 1）: Wall thickness of bushing （mm）: Young's modulus of bushing （kgf/mm2）（refer to table 1）: Outer diameter of bushing=Inner diameter of housing （mm）: Poisson's ratio of housing（refer to table 1）: Young's modulus of housing （kgf/mm2）（refer to table 1）: Outer diameter of housing （mm） : Pressure in radius direction at the boundary generated by interference （kgf/mm2） : Coefficient of combined sleeves （kgf/mm2）（for bushing）: Coefficient of combined sleeves （kgf/mm2）（for housing）: Press fit force of bushing （kgf）: Length of bushing （mm）: Coefficient of friction between bushing and housing （refer to table 2）: Interference of bushing against housing （mm）: Amount of inner diameter change of bushing after press fit （mm）（amount of shrinkage）

Poisson's ratio0.30

0.30

0.12

0.05

0.30

0.30

0.28

0.31

0.25

0.25

Young's modulus（kgf/mm2）21,000

16,500 to 18,000

5,000

2,400

11,000 to 13,000

21,000

19,700

20,400

10,500

9,450

SS400

FCD 450 to 500

Cermet M

Cermet G

FC 250

SCM 440

SUS 304

SUS 420J2

CAC403 (BC3)

CAC406 (BC6)

Material

Table-1 Poisson's ratio and Young's modulus

Poisson's ratio0.32

0.35

0.25

0.35

0.32

0.30

0.25

0.17

0.20

0.35

Young's modulus（kgf/mm2）12,000

11,000

6,600

7,700

8,400

21,000

6,000

700

1,800 to 3,000

288

CAC703

CAC304

500B

500SP

500AB

2000

300

250-07

Fiberflon

80

Material

Meallic bushing vs. metallic housing

Plastic bushing vs. metalic housing

Plastic bushing and plastic housing

0.20

0.15

0.15

Table-2 Coefficient of friection between bushing and housing

Kb= ｛（Eb・4tb）/D｝・（1－tb/D）

（1－Vb）＋（1＋Vb）・（1－2tb/D）2

Kh= Eh・｛（Dh/D）2　－1｝

（1－Vh）＋（1＋Vh）・（Dh/D）2

P = ・ DS

Kb＋Kh1

●Amount of inner diameter change △d of bushing after press fit

△d= = 2Eb・tbP・D2

2Eb・tb・（Kb＋Kh）S・D

●Press fit force of bushing

F = π・P・D・L・μ

Dh

■Press fitting

346

Selection Guide

ProductInform


Multi-layer Bearing

Metallic Bearing

Air Bearings

Technical Inform

ationSlide Shifter


336-365_技術資料.indd 346 19/09/19 10:27

On Design

■Service life of Oiles bearings

■Clearance design

Service life of Oiles bearings depends on application atmosphere and other relevant conditions. Below formula is determined from the relationship between the load and the sliding distance and should be regarded as rough standard for designing. Please inquire an Oiles representative for details.

mm/(kgf/cm2・m/min・Hr)5×10－6 to 15×10－7 to 15×10－8 to 1

mm/(N/mm2・m/s・Hr)6×10－4 to 3×10－3

6×10－5 to 3×10－4

6×10－6 to 3×10－5

Lubrication conditionsDry

Periodic lubricationOil lubrication

Specific wear rate depending on lubrication conditions

Assumed wear amount(mm) ： W＝K×P×V×T

Clearance for Oiles bearings should be designed larger than those for regular plain bearings used under hydrodynamic lubrication. This is because frictional heat and thickness of solid lubricant film generated in solid lubrication conditions is larger compared to hydrodyanamic lubrica-tion. Clearance should be corrected for the bearings where swelling is expected such as underwater applications, chemical submersion and in high temperature applications.

Fitting design for high temperature applications●When metallic bearing is to be used at over 100 degree C, design the

clearance by adding heat expansion amount indicated below to the inner diameter dimension tolerance at the room temperature indicated in the standard fitting table.

●When temperature goes down to a room temperature after exposed in high temperature, interference may disappear by stress relaxation and the bearing may come off or sliding at outer diameter of the bearing may occur. As a prevention measure, implement detent screwing.※For plastic bearings, please inquire an Oiles representative for the details

Correction value for swelling of bearingIf submerged underwater, Oiles 425 and Oiles 470 are swelled due to

moisture absorption. For details, please refer to page 349 and 350.

Heat expansion amount ＝Coefficient of thermal expansion of shaft × shaft diameter

×（ambient temperature － room temperature）

Coefficient of thermal expansionShaft material

This formula for determining wear amount is derived from the idea that the wear is proportional to load and sliding distance. Other factors such as velocity, load, mode of motion, kind of lubrication,clearance,surface rough-ness of mating material and foreign particles are disregarded. This should be treated as rough standard.

Coefficient of thermal linear expansion of the shaft

1.12×10－5/℃（20 to 300℃）1.29×10－5/℃（20 to 300℃）1.78×10－5/℃（20 to 300℃）1.21×10－5/℃（20 to 300℃）1.62×10－5/℃（20 to 300℃）

Soft steel

Ni-Cr steel

SUS304

SUS431

SUS316

CautionSpecific wear amount K ： mm/(N/mm2・m/s・Hr) ｛mm/(kgf/cm2・m/min・Hr)｝Design pressure P ： N/mm2 {kgf/cm2}Sliding velocity V ： m/s {m/min}Sliding hours T ： Hr

Service Life of Oiles Bearings and Clearance

347

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336-365_技術資料.indd 347 19/09/19 10:27

Fitting Standard Table

（Unit : mm）

Oiles 80 / Lutech E / 480（Machined products）

※When used at low temperature （lower than-0℃）, larger interference　（larger than the those indicated in the Fitting Standard Table） may be required. For details, please inquire an Oiles representative.

Up to 10

Exceeding 10 & up to 18







Up to 10















000000000000000

0.0150.0150.0180.0180.0210.0210.0210.0210.0250.0250.0250.0250.0300.0300.030

0.1950.2120.2450.2640.2990.3090.3240.3440.3920.4120.4320.4540.5120.5270.604

0.1120.1290.1440.1630.1780.1880.2030.2230.2480.2680.2880.3100.3400.3550.390

0.1280.1280.1610.1610.1960.1960.2110.2110.2590.2590.2790.2790.3370.3370.414

0.0450.0450.0600.0600.0750.0750.0900.0900.1150.1150.1350.1350.1650.1650.200

0.1430.1430.1790.1790.2160.2160.2310.2310.2840.2840.3040.3040.3670.3670.444

0.0450.0450.0600.0600.0750.0750.0900.0900.1150.1150.1350.1350.1650.1650.200

0.0150.0180.0180.0210.0210.0210.0210.0250.0250.0250.0250.0300.0300.0300.030

000000000000000

0.1030.1280.1280.1550.1550.1650.1650.1950.1950.2150.2150.2500.2500.2800.280

0.0450.0580.0580.0710.0710.0810.0810.0950.0950.1150.1150.1300.1300.1300.130

0.1030.1280.1280.1550.1550.1650.1650.1950.1950.2150.2150.2500.2500.2800.280

0.0300.0400.0400.0500.0500.0600.0600.0700.0700.0900.0900.1000.1000.1000.100

(＋) (＋) (＋) max. (＋) (＋) max.(－) (＋) (＋) min. (－) (＋) min.I.D. O.D.

Recommendedshaft (h7)

I.D.before press fit

I.D.after press fit

(ref.value)Recommended

hole (H7) Bearing O.D. Bearing dimension Clearance Interference

Dimension tolerance Dimension tolerance

（Unit : mm）

Oiles Glitron F

※Smaller clearance, smaller by approximately 1/1000・d, may be achieved if oil lubrication is used.

Up to 10






Exceeding120 & up to180

Up to 10













0000000000000

0.0150.0150.0180.0180.0210.0210.0250.0250.0300.0300.0350.0350.040

0.2080.2200.2200.2380.2440.2620.2800.3030.3200.3440.3800.4090.470

0.1500.1620.1500.1680.1600.1780.1800.2030.2000.2240.2400.2690.310

0.1570.1570.1570.1570.1630.1630.1810.1810.1980.1980.2340.2340.295

0.0990.0990.0870.0870.0790.0790.0810.0810.0780.0780.0940.0940.135

0.1720.1720.1720.1720.1840.1840.2060.2060.2280.2280.2690.2690.335

0.0990.0990.0870.0870.0790.0790.0810.0810.0780.0780.0940.0940.135

0.0150.0180.0180.0210.0210.0250.0250.0300.0300.0350.0350.0400.040

0000000000000

0.0760.0930.0930.1170.1170.1420.1420.1740.1740.2070.2070.2450.245

0.0400.0500.0500.0650.0650.0800.0800.1000.1000.1200.1200.1450.145

0.0760.0930.0930.1170.1170.1420.1420.1740.1740.2070.2070.2450.245

0.0250.0320.0320.0440.0440.0550.0550.0700.0700.0850.0850.1050.105




Recommendedhole (H7) Bearing O.D.

Bearing dimension Clearance Interference

Dimension tolerance Dimension toleranceI.D.

after press fit(ref.value)

348

Selection Guide

ProductInform


Multi-layer Bearing

Metallic Bearing

Air Bearings

Technical Inform

ationSlide Shifter


336-365_技術資料.indd 348 19/09/19 10:27

On Design

（Unit : mm）

Oiles 250

Up to 10











Up to 10





















000000000000000000000

0.0150.0150.0180.0180.0210.0210.0250.0250.0300.0300.0350.0350.0400.0400.0460.0460.0520.0520.0570.0570.063

0.1090.1120.1300.1360.1710.1800.2230.2320.2960.3090.3950.4090.5300.5460.6780.6970.8390.8611.0301.0501.211

0.0790.0820.0950.1010.1280.1370.1720.1810.2360.2490.3240.3380.4480.4640.5840.6030.7330.7550.9150.9351.085

0.0750.0750.0930.0930.1280.1280.1710.1710.2350.2350.3210.3210.4420.4420.5740.5740.7160.7160.8850.8851.046

0.0450.0450.0580.0580.0850.0850.1200.1200.1750.1750.2500.2500.3600.3600.4800.4800.6100.6100.7700.7700.920

0.0900.0900.1110.1110.1490.1490.1960.1960.2650.2650.3560.3560.4820.4820.6200.6200.7680.7680.9420.9421.109

0.0450.0450.0580.0580.0850.0850.1200.1200.1750.1750.2500.2500.3600.3600.4800.4800.6100.6100.7700.7700.920

0.0150.0180.0180.0210.0210.0250.0250.0300.0300.0350.0350.0400.0400.0460.0460.0520.0520.0570.0570.0630.063

000000000000000000000

0.0540.0580.0580.0680.0680.0840.0840.1010.1010.1210.1210.1430.1430.1670.1670.1940.1940.2280.2280.2560.256

0.0290.0330.0330.0380.0380.0440.0440.0510.0510.0610.0610.0730.0730.0870.0870.1040.1040.1180.1180.1360.136

0.0540.0580.0580.0680.0680.0840.0840.1010.1010.1210.1210.1430.1430.1670.1670.1940.1940.2280.2280.2560.256

0.0140.0150.0150.0170.0170.0190.0190.0210.0210.0260.0260.0330.0330.0410.0410.0520.0520.0610.0610.0730.073







t : bushing wall thickness（mm）

Dimensional change by swelling

Test piece dimensions φ98×φ118×R100φ135×φ155×R100φ155×φ185×R100Atmosphere : room temperature and in purified water

Based on above swelling correction value, 2×10 (t：bushing wall thickness)×0.008＝0.160 φ100 ＋correction value ： 0.160

＋0.260＋0.188 φ100＋0.420＋0.348

1.0

0.5

00 250 500 750

Number of days submerged in water (Day)Amount of dimensional

change of inner and

outer diameter(%)

■Swelling characteristicsWhen designing for fitting for underwater use bearings (Oiles 425 and 470), dimensional change by swelling must be taken into account. In case of bushings, clearance may be changed due to swelling. Add swelling correction value described below to inner diameter tolerance indicated in the fitting standard table.

425-13、172×t×0.0062×t×0.012

425-03、06、072×t×0.0152×t×0.030

MaterialRoom temperature50℃ or over

●Swelling correction value

Example : Oiles 470-02 bushing of 100 I.D. × 120 O.D. × 100R applied in 30℃ water

Swelling testing conditions

I.D.after press fit

(ref.value)

349

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336-365_技術資料.indd 349 19/09/19 10:27

※For multi-layer type（470-02W）, use fitting table for Oiles 250. （Unit : mm）

Oiles 470-02

Up to 10






Exceeding120 & up to 180





Up to 10





















000000000000000000000

0.0150.0150.0180.0180.0210.0210.0250.0250.0300.0300.0350.0350.0400.0400.0460.0460.0520.0520.0570.0570.063

0.1020.1050.1220.1280.1430.1520.1690.1780.2080.2210.2600.2740.3300.3460.4020.4210.4720.4940.5300.5500.595

0.0800.0830.0950.1010.1100.1130.1300.1390.1560.1690.1880.2020.2360.2520.2920.3110.3460.3680.3930.4130.440

0.0680.0680.0850.0850.1000.1000.1170.1170.1470.1470.1860.1860.2420.2420.2980.2980.3490.3490.3850.3850.430

0.0460.0460.0580.0580.0670.0670.0780.0780.0950.0950.1140.1140.1480.1480.1880.1880.2230.2230.2480.2480.275

0.0830.0830.1130.1130.1210.1210.1420.1420.1770.1770.2210.2210.2820.2820.3440.3440.4010.4010.4420.4420.493

0.0460.0460.0580.0580.0670.0670.0780.0780.0950.0950.1140.1140.1480.1480.1880.1880.2230.2230.2480.2480.275

0.0150.0180.0180.0210.0210.0250.0250.0300.0300.0350.0350.0400.0400.0460.0460.0520.0520.0570.0570.0630.063

000000000000000000000

0.0540.0580.0580.0680.0680.0840.0840.1010.1010.1210.1210.1430.1430.1670.1670.1940.1940.2280.2280.2560.256

0.0290.0330.0330.0380.0380.0440.0440.0510.0510.0610.0610.0730.0730.0870.0870.1040.1040.1180.1180.1360.136

0.0540.0580.0580.0680.0680.0840.0840.1010.1010.1210.1210.1430.1430.1670.1670.1940.1940.2280.2280.2560.256

0.0140.0150.0150.0170.0170.0190.0190.0210.0210.0260.0260.0330.0330.0410.0410.0520.0520.0610.0610.0730.073







470-02W2×t×0.0122×t×0.025

470-022×t×0.0082×t×0.012

MaterialRoom temperature50℃ or over

●Swelling correction value

I.D.after press fit

(ref.value)

t : bushing wall thickness（mm）

350

Selection Guide

ProductInform


Multi-layer Bearing

Metallic Bearing

Air Bearings

Technical Inform

ationSlide Shifter


336-365_技術資料.indd 350 19/09/19 10:27

On Design

※Above chart can be used for low speed conditions of under 0.008 m/s {0.5 m/min}, even if contact pressure is over 9.8 N./mm2※Above chart can be applied to BCB Oiles 500 B standard product. However it does not correspond to the fitting standard　of other 500SP standard products such as SPB, SPBL, SPF, SPFG, SGF, SGB.

※For fitting design with temperature over 100℃, please inquire an OILES representative.

（Unit : mm）

Up to 10











Up to 10





















000000000000000000000

0.0150.0150.0180.0180.0210.0210.0250.0250.0300.0300.0350.0350.0400.0400.0460.0460.0520.0520.0570.0570.063

0.0570.0610.0780.0820.1050.1110.1440.1510.1900.1990.2420.2540.3080.3210.3720.3860.4500.4640.5390.5550.638

0.0350.0390.0510.0550.0720.0780.1050.1120.1440.1530.1880.2000.2450.2580.3000.3140.3690.3830.4500.4660.541

0.0400.0400.0570.0570.0800.0800.1130.1130.1520.1520.1950.1950.2490.2490.3000.3000.3640.3640.4390.4390.522

0.0180.0180.0300.0300.0470.0470.0740.0740.1060.1060.1410.1410.1860.1860.2280.2280.2830.2830.3500.3500.425

0.0550.0550.0750.0750.1010.1010.1380.1380.1820.1820.2300.2300.2890.2890.3460.3460.4160.4160.4960.4960.585

0.0180.0180.0300.0300.0470.0470.0740.0740.1060.1060.1410.1410.1860.1860.2280.2280.2830.2830.3500.3500.425

0.0150.0180.0180.0210.0210.0250.0250.0300.0300.0350.0350.0400.0400.0460.0460.0520.0520.0570.0570.0630.063

000000000000000000000

0.0340.0410.0410.0490.0490.0590.0590.0730.0730.0890.0890.1080.1080.1300.1300.1500.1500.1710.1710.1950.195

0.0190.0230.0230.0280.0280.0340.0340.0410.0410.0510.0510.0630.0630.0770.0770.0940.0940.1080.1080.1260.126

0.0340.0410.0410.0490.0490.0590.0590.0730.0730.0890.0890.1080.1080.1300.1300.1500.1500.1710.1710.1950.195

0.0040.0050.0050.0070.0070.0090.0090.0110.0110.0160.0160.0230.0230.0310.0310.0420.0420.0510.0510.0630.063







（Unit : mm）

Oiles Cermet M（Room temp. to 100℃ or less）

Up to 3






Up to 3











00000000000

0.0100.0100.0120.0120.0150.0150.0180.0180.0210.0210.025

0.0240.0260.0320.0340.0400.0420.0500.0530.0610.0640.075

0.0140.0160.0200.0220.0250.0270.0320.0350.0400.0430.050

0.0190.0190.0250.0250.0310.0310.0390.0390.0470.0470.058

0.0090.0090.0130.0130.0160.0160.0210.0210.0260.0260.033

0.0290.0290.0370.0370.0460.0460.0570.0570.0680.0680.083

0.0090.0090.0130.0130.0160.0160.0210.0210.0260.0260.033

0.0100.0120.0120.0150.0150.0180.0180.0210.0210.0250.025

00000000000

0.0200.0270.0270.0340.0340.0410.0410.0490.0490.0590.059

0.0100.0150.0150.0190.0190.0230.0230.0280.0280.0340.034

0.0200.0270.0270.0340.0340.0410.0410.0490.0490.0590.059

0.0000.0030.0030.0040.0040.0050.0050.0070.0070.0090.009







Oiles 500（Room temp./contact pressure P=9.8N/mm2｛100kgf/cm2｝or less）Oiles Cermet G（Room temp. to 100°C or less）

I.D.after press fit

(ref.value)

I.D.after press fit

(ref.value)

351

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336-365_技術資料.indd 351 19/09/19 10:27

※If applied over 100℃ conditions, clearance should be designed by adding below heat expansion　amount to the inner diameter tolerance at room temperature. 　Heat expansion amount ＝ heat expansion co-efficient of shaft (α) × shaft diameter (d) × (ambience temperature － room temperature)　α of soft steel : 1.12 × 10－5/℃※If applied above 100℃ conditions, interference of the outer diameter may be reduced due to stress relaxation.　Detent screwing is recommended.※For fitting design with temperature over 200℃, please inquire an OILES representative.

（Unit : mm）

Up to 10











Up to 10





















000000000000000000000

0.0150.0150.0180.0180.0210.0210.0250.0250.0300.0300.0350.0350.0400.0400.0460.0460.0520.0520.0570.0570.063

0.0720.0750.1100.1140.1550.1600.2160.2230.3000.3080.3960.4060.5100.5220.6360.6490.7280.7400.8180.8320.950

0.0500.0530.0830.0870.1220.1270.1770.1840.2540.2620.3420.3520.4470.4590.5640.5770.6470.6590.7290.7430.853

0.0570.0570.0920.0920.1330.1330.1890.1890.2660.2660.3540.3540.4580.4580.5720.5720.6510.6510.7290.7290.847

0.0350.0350.0650.0650.1000.1000.1500.1500.2200.2200.3000.3000.3950.3950.5000.5000.5700.5700.6400.6400.750

0.0720.0720.1100.1100.1540.1540.2140.2140.2960.2960.3890.3890.4980.4980.6180.6180.7030.7030.7860.7860.910

0.0350.0350.0650.0650.1000.1000.1500.1500.2200.2200.3000.3000.3950.3950.5000.5000.5700.5700.6400.6400.750

0.0150.0180.0180.0210.0210.0250.0250.0300.0300.0350.0350.0400.0400.0460.0460.0520.0520.0570.0570.0630.063

000000000000000000000

0.0340.0410.0410.0490.0490.0590.0590.0730.0730.0890.0890.1080.1080.1300.1300.1500.1500.1710.1710.1950.195

0.0190.0230.0230.0280.0280.0340.0340.0410.0410.0510.0510.0630.0630.0770.0770.0940.0940.1080.1080.1260.126

0.0340.0410.0410.0490.0490.0590.0590.0730.0730.0890.0890.1080.1080.1300.1300.1500.1500.1710.1710.1950.195

0.0040.0050.0050.0070.0070.0090.0090.0110.0110.0160.0160.0230.0230.0310.0310.0420.0420.0510.0510.0630.063


Recommendedshaft(h7)


Recommendedhole(H7) Bearing O.D.



Oiles 500（Over room temp. and up to 200°Ｃ / or contact pressure P=9.8N/mm2｛100kgf/cm2｝or over）Oiles Cermet G（Over 100°C and up to 200°Ｃ）

I.D.after press fit

(ref.value)

352

Selection Guide

ProductInform


Multi-layer Bearing

Metallic Bearing

Air Bearings

Technical Inform

ationSlide Shifter


336-365_技術資料.indd 352 19/09/19 10:27










I.D.after press fit


Bearing dimension Clearance InterferenceDimension tolerance Dimension tolerance

I.D.after press fit

(ref.value)

※This tolerance table follows Technical Standard on Dam & Weir Equipment (of Japan)

Up to 10











Up to 10





















000000000000000000000

0.0150.0150.0180.0180.0210.0210.0250.0250.0300.0300.0350.0350.0400.0400.0460.0460.0520.0520.0570.0570.063

0.0970.1000.1420.1460.1950.2000.2660.2730.3600.3680.4680.4780.5950.6070.7360.7490.8380.8500.9430.9571.085

0.0750.0780.1150.1190.1620.1670.2270.2340.3140.3220.4140.4240.5320.5440.6640.6770.7570.7690.8540.8680.988

0.0820.0820.1240.1240.1730.1730.2390.2390.3260.3260.4260.4260.5430.5430.6720.6720.7610.7610.8540.8540.982

0.0600.0600.0970.0970.1400.1400.2000.2000.2800.2800.3720.3720.4800.4800.6000.6000.6800.6800.7650.7650.885

0.0970.0970.1420.1420.1940.1940.2640.2640.3560.3560.4610.4610.5830.5830.7180.7180.8130.8130.9110.9111.045

0.0600.0600.0970.0970.1400.1400.2000.2000.2800.2800.3720.3720.4800.4800.6000.6000.6800.6800.7650.7650.885

0.0150.0180.0180.0210.0210.0250.0250.0300.0300.0350.0350.0400.0400.0460.0460.0520.0520.0570.0570.0630.063

000000000000000000000

0.0340.0410.0410.0490.0490.0590.0590.0730.0730.0890.0890.1080.1080.1300.1300.1500.1500.1710.1710.1950.195

0.0190.0230.0230.0280.0280.0340.0340.0410.0410.0510.0510.0630.0630.0770.0770.0940.0940.1080.1080.1260.126

0.0340.0410.0410.0490.0490.0590.0590.0730.0730.0890.0890.1080.1080.1300.1300.1500.1500.1710.1710.1950.195

0.0040.0050.0050.0070.0070.0090.0090.0110.0110.0160.0160.0230.0230.0310.0310.0420.0420.0510.0510.0630.063

（Unit : mm）

Oiles 500 Large Diameter Bushings（Room temp. / pressure P = less than 9.8N/mm2 {100kgf/cm2}）









Less than500 & up to 630















000000000000000

0.0700.0700.0800.0800.0900.0900.1050.1050.1250.1250.1500.1500.1750.1750.210

0.7260.7610.8060.8440.8890.9400.9951.0651.1351.2171.2921.3881.4881.6161.706

0.6160.6510.6810.7190.7490.8000.8300.9000.9401.0221.0621.1581.2081.3361.376

0.5650.5650.6100.6100.6550.6550.7100.7100.7800.7800.8550.8550.9550.9551.045

0.4550.4550.4850.4850.5150.5150.5450.5450.5850.5850.6250.6250.6750.6750.715

0.6350.6350.6900.6900.7450.7450.8150.8150.9050.9051.0051.0051.1301.1301.255

0.4550.4550.4850.4850.5150.5150.5450.5450.5850.5850.6250.6250.6750.6750.715

0.0700.0800.0800.0900.0900.1050.1050.1250.1250.1500.1500.1750.1750.2100.210

000000000000000

0.2350.2800.2800.3290.3290.3950.3950.4860.4860.5950.5950.7170.7170.8820.882

0.1580.1920.1920.2300.2300.2800.2800.3490.3490.4300.4300.5250.5250.6510.651

0.2350.2800.2800.3290.3290.3950.3950.4860.4860.5950.5950.7170.7170.8820.882

0.0880.1120.1120.1400.1400.1750.1750.2240.2240.2800.2800.3500.3500.4410.441

Oiles 500 for Gate Applications (Shaft tolerance h7)

On Design

（Unit : mm）

353

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336-365_技術資料.indd 353 19/09/19 10:27

※When used in oil lubrication, clearance may be smaller by 1/1000・d.












Dimension tolerance Dimension toleranceI.D.

after press fit(ref.value)

I.D.after press fit

(ref.value)

Up to 10











Up to 10





















000000000000000000000

0.0150.0150.0180.0180.0210.0210.0250.0250.0300.0300.0350.0350.0400.0400.0460.0460.0520.0520.0570.0570.063

0.0510.0550.0680.0720.0880.0940.1130.1200.1440.1530.1880.2000.2460.2590.3070.3210.3720.3860.4490.4650.538

0.0290.0330.0410.0450.0550.0610.0740.0810.0980.1070.1340.1460.1830.1960.2350.2490.2910.3050.3600.3760.441

0.0340.0340.0470.0470.0630.0630.0820.0820.1060.1060.1410.1410.1870.1870.2350.2350.2860.2860.3490.3490.422

0.0120.0120.0200.0200.0300.0300.0430.0430.0600.0600.0870.0870.1240.1240.1630.1630.2050.2050.2600.2600.325

0.0490.0490.0650.0650.0840.0840.1070.1070.1360.1360.1760.1760.2270.2270.2810.2810.3380.3380.4060.4060.485

0.0120.0120.0200.0200.0300.0300.0430.0430.0600.0600.0870.0870.1240.1240.1630.1630.2050.2050.2600.2600.325

0.0150.0180.0180.0210.0210.0250.0250.0300.0300.0350.0350.0400.0400.0460.0460.0520.0520.0570.0570.0630.063

000000000000000000000

0.0340.0410.0410.0490.0490.0590.0590.0730.0730.0890.0890.1080.1080.1300.1300.1500.1500.1710.1710.1950.195

0.0190.0230.0230.0280.0280.0340.0340.0410.0410.0510.0510.0630.0630.0770.0770.0940.0940.1080.1080.1260.126

0.0340.0410.0410.0490.0490.0590.0590.0730.0730.0890.0890.1080.1080.1300.1300.1500.1500.1710.1710.1950.195

0.0040.0050.0050.0070.0070.0090.0090.0110.0110.0160.0160.0230.0230.0310.0310.0420.0420.0510.0510.0630.063

（Unit : mm）

Oiles 500 Large Diameter Bushings（Over room temp. and up to 200℃ / or pressure P = over 9.8N/mm2 {100kgf/cm2}）









Less than500 & up to 630















000000000000000

0.0700.0700.0800.0800.0900.0900.1050.1050.1250.1250.1500.1500.1750.1750.210

1.0511.0861.1311.1691.2141.2651.3201.3901.4601.5421.6171.7131.8131.9412.031

0.9410.9761.0061.0441.0741.1251.1551.2251.2651.3471.3871.4831.5331.6611.701

0.8900.8900.9350.9350.9800.9801.0351.0351.1051.1051.1801.1801.2801.2801.370

0.7800.7800.8100.8100.8400.8400.8700.8700.9100.9100.9500.9501.0001.0001.040

0.9600.9601.0151.0151.0701.0701.1401.1401.2301.2301.3301.3301.4551.4551.580

0.7800.7800.8100.8100.8400.8400.8700.8700.9100.9100.9500.9501.0001.0001.040

0.0700.0800.0800.0900.0900.1050.1050.1250.1250.1500.1500.1750.1750.2100.210

000000000000000

0.2350.2800.2800.3290.3290.3950.3950.4860.4860.5950.5950.7170.7170.8820.882

0.1580.1920.1920.2300.2300.2800.2800.3490.3490.4300.4300.5250.5250.6510.651

0.2350.2800.2800.3290.3290.3950.3950.4860.4860.5950.5950.7170.7170.8820.882

0.0880.1120.1120.1400.1400.1750.1750.2240.2240.2800.2800.3500.3500.4410.441

（Unit : mm）

Oiles 300 / 600

354

Selection Guide

ProductInform


Multi-layer Bearing

Metallic Bearing

Air Bearings

Technical Inform

ationSlide Shifter


336-365_技術資料.indd 354 19/09/19 10:27

On DesignOiles 500 Spherical Bearings　　　（Window type spherical bearing with nominal dimension of less than φ100）　　　（Room temp. / pressure P = up to 9.8N/mm2 {100kgf/cm2 }）

φD3

φD1SφD2

Oiles 500 Spherical Bearings　　　（Window type spherical bearing with nominal dimension of less than φ100）　　　（Over room temp. and up to 200℃ / or pressure P = over 9.8N/mm2 {100kgf/cm2 }）

Exceeding 10 & up to 18Exceeding 18 & up to 30Exceeding 18 & up to 30Exceeding 30 & up to 50Exceeding 18 & up to 30Exceeding 30 & up to 50Exceeding 30 & up to 50Exceeding 50 & up to 80Exceeding 30 & up to 50Exceeding 50 & up to 80Exceeding 50 & up to 80

Exceeding 80 & up to 120Exceeding 50 & up to 80







Exceeding 120 & up to 180Exceeding 120 & up to 180Exceeding 120 & up to 180

Exceeding 10& up to 14









（Unit : mm）

000000000000000000

000000000000000000

0.01050.01250.01050.01250.01250.01500.01250.01500.01250.01500.01500.01750.01500.01750.01750.02000.02000.0200

0.0110.0130.0110.0130.0130.0150.0130.0150.0130.0150.0150.0180.0150.0180.0180.0200.0200.020

0.0320.0380.0320.0380.0380.0450.0380.0450.0380.0450.0450.0530.0450.0530.0530.0600.0600.060

0.0210.0250.0210.0250.0250.0300.0250.0300.0250.0300.0300.0350.0300.0350.0350.0400.0400.040

0.0500.0610.0610.0750.0610.0750.0750.0900.0750.0900.0900.1070.0900.1070.1070.1250.1070.125

0.0320.0400.0400.0500.0400.0500.0500.0600.0500.0600.0600.0720.0600.0720.0720.0850.0720.085

000000000000000000

0.0180.0210.0210.0250.0210.0250.0250.0300.0250.0300.0300.0350.0300.0350.0350.0400.0350.040

0.0300.0300.0300.0300.0470.0470.0470.0470.0740.0740.0740.0740.1060.1060.1060.1060.1410.141

0.0570.0570.0570.0570.0800.0800.0800.0800.1130.1130.1130.1130.1520.1520.1520.1520.1950.195

0.0180.0180.0180.0180.0210.0210.0210.0210.0250.0250.0250.0250.0300.0300.0300.0300.0350.035

0.0680.0820.0820.1000.0820.1000.1000.1200.1000.1200.1200.1420.1200.1420.1420.1650.1420.165

0.0320.0400.0400.0500.0400.0500.0500.0600.0500.0600.0600.0720.0600.0720.0720.0850.0720.085

0.0750.0750.0750.0750.1010.1010.1010.1010.1380.1380.1380.1380.1820.1820.1820.1820.2300.230

0.0300.0300.0300.0300.0470.0470.0470.0470.0740.0740.0740.0740.1060.1060.1060.1060.1410.141

I.D. O.D.S.D.

Bearing dimension(D1)

(＋) (－) (＋) (＋) max. min. (＋) (－) (－) (－) max. min. (＋) (－) ± max. min.

Outer raceI.D. (H7)

Inner raceO.D. (e7) Clearance

Inner race O.D. (D2)



















（Unit : mm）

000000000000000000

000000000000000000

0.01050.01250.01050.01250.01250.01500.01250.01500.01250.01500.01500.01750.01500.01750.01750.02000.02000.0200

0.0110.0130.0110.0130.0130.0150.0130.0150.0130.0150.0150.0180.0150.0180.0180.0200.0200.020

0.0320.0380.0320.0380.0380.0450.0380.0450.0380.0450.0450.0530.0450.0530.0530.0600.0600.060

0.0210.0250.0210.0250.0250.0300.0250.0300.0250.0300.0300.0350.0300.0350.0350.0400.0400.040

0.0500.0610.0610.0750.0610.0750.0750.0900.0750.0900.0900.1070.0900.1070.1070.1250.1070.125

0.0320.0400.0400.0500.0400.0500.0500.0600.0500.0600.0600.0720.0600.0720.0720.0850.0720.085

000000000000000000

0.0180.0210.0210.0250.0210.0250.0250.0300.0250.0300.0300.0350.0300.0350.0350.0400.0350.040

0.0650.0650.0650.0650.1000.1000.1000.1000.1500.1500.1500.1500.2200.2200.2200.2200.3000.300

0.0920.0920.0920.0920.1330.1330.1330.1330.1890.1890.1890.1890.2660.2660.2660.2660.3540.354

0.0180.0180.0180.0180.0210.0210.0210.0210.0250.0250.0250.0250.0300.0300.0300.0300.0350.035

0.0680.0820.0820.1000.0820.1000.1000.1200.1000.1200.1200.1420.1200.1420.1420.1650.1420.165

0.0320.0400.0400.0500.0400.0500.0500.0600.0500.0600.0600.0720.0600.0720.0720.0850.0720.085

0.1100.1100.1100.1100.1540.1540.1540.1540.2140.2140.2140.2140.2960.2960.2960.2960.3890.389

0.0650.0650.0650.0650.1000.1000.1000.1000.1500.1500.1500.1500.2200.2200.2200.2200.3000.300

Recommendedshaft (h7) Clearance

I.D.tolerance (D1) Interference

Recommendedhole (H7)

O.D. tolerance(D3) js7

I.D. O.D.S.D.


(＋) (－) (＋) (＋) max. min. (＋) (－) (－) (－) max. min. (＋) (－) ± max. min.

Outer raceI.D. (H7)


Inner race O.D. (D2)Recommended

shaft (h7) ClearanceI.D.

tolerance (D1) InterferenceRecommended

hole (H7)O.D. tolerance

(D3) js7

355

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336-365_技術資料.indd 355 19/09/19 10:27

Oiles 500 Spherical Bearings　　　（Split outer race type with the I.D. of up to φ100 mm / room temperature）　　　（pressure; up to P=9.8N/mm2 {100kgf/cm2 }）

φD3

φD1SφD2

Oiles 500 Spherical Bearings　　　（Split outer race type with the I.D. of over φ100 to φ1,250 mm / room temperature）　　　（pressure; up to P=9.8N/mm2 {100kgf/cm2 }）



















（Unit : mm）

000000000000000000

Exceeding 120 & up to 180Exceeding 180 & up to 250Exceeding 120 & up to 180Exceeding 180 & up to 250Exceeding 250 & up to 315Exceeding 315 & up to 400Exceeding 315 & up to 400Exceeding 400 & up to 500Exceeding 400 & up to 500Exceeding 500 & up to 630Exceeding 500 & up to 630Exceeding 630 & up to 800Exceeding 500 & up to 630Exceeding 630 & up to 800Exceeding 630 & up to 800

Exceeding 800 & up to 1000Exceeding 1000 & up to 1250Exceeding 1250 & up to 1600Exceeding 1000 & up to 1250Exceeding 1250 & up to 1600

Exceeding 120 & up to 180Exceeding 180 & up to 250Exceeding 180 & up to 250Exceeding 250 & up to 315Exceeding 250 & up to 315Exceeding 315 & up to 400Exceeding 315 & up to 400Exceeding 400 & up to 500Exceeding 400 & up to 500Exceeding 500 & up to 630Exceeding 500 & up to 630Exceeding 630 & up to 800Exceeding 630 & up to 800













（Unit : mm）

※I.D. dimension of outer race of spherical bearing is H8 after it is set into a housing.


000000000000000000

0.0430.0510.0430.0510.0510.0620.0510.0620.0510.0620.0620.0720.0620.0720.0720.0830.0830.083

0.0010.0010.0010.0010.0010.0020.0010.0020.0010.0020.0020.0020.0020.0020.0020.0030.0030.003

0.0210.0250.0210.0250.0250.0300.0250.0300.0250.0300.0300.0350.0300.0350.0350.0400.0400.040

0.0590.0730.0730.0890.0730.0890.0890.1060.0890.1060.1060.1260.1060.1260.1260.1480.1260.148

0.0320.0400.0400.0500.0400.0500.0500.0600.0500.0600.0600.0720.0600.0720.0720.0850.0720.085

0.0220.0260.0220.0260.0260.0320.0260.0320.0260.0320.0320.0370.0320.0370.0370.0430.0430.043

0.0490.0590.0550.0510.0590.0710.0650.0780.0650.0780.0780.0910.0780.0910.0910.1060.0970.106

0.0300.0300.0300.0300.0470.0470.0470.0470.0740.0740.0740.0740.1060.1060.1060.1060.1410.141

0.0570.0570.0570.0570.0800.0800.0800.0800.1130.1130.1130.1130.1520.1520.1520.1520.1950.195

0.0180.0180.0180.0180.0210.0210.0210.0210.0250.0250.0250.0250.0300.0300.0300.0300.0350.035

0.0860.1060.1060.1140.1060.1280.1280.1520.1280.1520.1520.1800.1520.1800.1800.2110.1800.211

0.0320.0400.0400.0500.0400.0500.0500.0600.0500.0600.0600.0720.0600.0720.0720.0850.0720.085

0.0750.0750.0750.0750.1010.1010.1010.1010.1380.1380.1380.1380.1820.1820.1820.1820.2300.230

0.0300.0300.0300.0300.0470.0470.0470.0470.0740.0740.0740.0740.1060.1060.1060.1060.1410.141

00000000000000000000

00000000000000000000

0.0830.0960.0960.1080.1080.1190.1190.1310.1310.1480.1480.1680.1680.1900.1900.2250.2650.3200.2650.320

0.0030.0040.0040.0040.0040.0050.0050.0050.0050.0080.0080.0080.0080.0100.0100.0150.0150.0200.0150.020

0.0430.0510.0430.0510.0510.0620.0510.0620.0510.0620.0620.0720.0620.0720.0720.0830.0830.083

0.0220.0260.0220.0260.0260.0320.0260.0320.0260.0320.0320.0370.0320.0370.0370.0430.0430.043

0.0830.0960.0960.1080.1080.1190.1190.1310.1310.1480.1480.1680.1680.1900.1900.2250.2650.3200.2650.320

0.0430.0500.0500.0560.0560.0620.0620.0680.0680.0780.0780.0880.0880.1000.1000.1200.1400.1700.1400.170

0.0400.0460.0460.0520.0520.0570.0570.0630.0630.0700.0700.0800.0800.0900.0900.1050.1250.1500.1250.150

0.1480.1720.1480.1720.1910.2140.2140.2320.2320.2550.2550.2850.2550.2850.2850.3100.3600.4150.3600.415

0.0850.1000.0850.1000.1100.1250.1250.1350.1350.1450.1450.1600.1450.1600.1600.1700.1950.2200.1950.220

0.0430.0500.0500.0560.0560.0620.0620.0680.0680.0780.0780.0880.0880.1000.1000.1200.1400.1700.1400.170

0.1060.1220.1130.1280.1370.1510.1510.1650.1650.1880.1880.2130.1980.2250.2250.2600.3050.3650.3050.365

0.1410.1410.1860.1860.2280.2280.2830.2830.3500.3500.4250.4250.4550.4550.4850.4850.5150.5150.5450.545

0.1950.1950.2490.2490.3000.3000.3640.3640.4390.4390.5220.5220.5650.5650.6100.6100.6550.6550.7100.710

0.0350.0350.0400.0400.0460.0460.0520.0520.0570.0570.0630.0630.0700.0700.0800.0800.0900.0900.1050.105

0.2110.2440.2110.2440.2720.3030.3030.3290.3290.3650.3650.4100.3650.4100.4100.4500.5250.6100.5250.610

0.0850.1000.0850.1000.1100.1250.1250.1350.1350.1450.1450.1600.1450.1600.1600.1700.1950.2200.1950.220

0.2300.2300.2890.2890.3460.3460.4160.4160.4960.4960.5850.5850.6350.6350.6900.6900.7450.7450.8150.815

0.1410.1410.1860.1860.2280.2280.2830.2830.3500.3500.4250.4250.4550.4550.4850.4850.5150.5150.5450.545

I.D. O.D.S.D.


(＋) (－) (＋) (＋) max. min. (＋) (＋) (－) (－) max. min. (＋) (－) (＋) (＋) max. min.

Outer raceI.D. (H7)






(D3) p7

I.D. O.D.S.D.


(＋) (－) (＋) (＋) max. min. (＋) (＋) (－) (－) max. min. (＋) (－) (＋) (＋) max. min.

Outer raceI.D. (H7)






(D3) p7

356

Selection Guide

ProductInform


Multi-layer Bearing

Metallic Bearing

Air Bearings

Technical Inform

ationSlide Shifter


336-365_技術資料.indd 356 19/09/19 10:27

On DesignOiles 500 Spherical Bearings　　　（Split outer race type with the I.D. of up to φ100 mm / room temperature up to 200℃）　　　（pressure; P=9.8N/mm2 {100kgf/cm2 } and over)

Oiles 500 Spherical Bearings　　　（Split outer race types with the I.D. of over φ100 to φ1,250 mm）　　　（room temperature up to 200℃/ pressure; up to P=9.8N/mm2 {100kgf/cm2 } and over)



















（Unit : mm）

Exceeding 120 & up to 180Exceeding 180 & up to 250Exceeding 120 & up to 180Exceeding 180 & up to 250Exceeding 250 & up to 315Exceeding 315 & up to 400Exceeding 315 & up to 400Exceeding 400 & up to 500Exceeding 400 & up to 500Exceeding 500 & up to 630Exceeding 500 & up to 630Exceeding 630 & up to 800Exceeding 500 & up to 630Exceeding 630 & up to 800Exceeding 630 & up to 800


Exceeding 120 & up to 180Exceeding 180 & up to 250Exceeding 180 & up to 250Exceeding 250 & up to 315Exceeding 250 & up to 315Exceeding 315 & up to 400Exceeding 315 & up to 400Exceeding 400 & up to 500Exceeding 400 & up to 500Exceeding 500 & up to 630Exceeding 500 & up to 630Exceeding 630 & up to 800Exceeding 630 & up to 800













（Unit : mm）



000000000000000000

000000000000000000

0.0430.0510.0430.0510.0510.0620.0510.0620.0510.0620.0620.0720.0620.0720.0720.0830.0830.083

0.0010.0010.0010.0010.0010.0020.0010.0020.0010.0020.0020.0020.0020.0020.0020.0030.0030.003

0.0210.0250.0210.0250.0250.0300.0250.0300.0250.0300.0300.0350.0300.0350.0350.0400.0400.040

0.0590.0730.0730.0890.0730.0890.0890.10

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