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SENJU METAL INDUSTRY CO., LTD.

HEADQUARTERSSenju Hashido-cho 23, Adachi-ku, Tokyo 120-0038, JapanPhone (81)3-3888-5151URL　 www.senju.com/en

Contact

© 2019 Senju Metal Industry Co., Ltd. All rights reserved.

998B-E0419

◎ Spraying technology

◎ Slit processing technology

◎ Friction test◎ Surface analysis ◎ Friction and abrasion test

◎ Resin impregnation technology

◎ Automatic inspection 　 technology

Allows the formation of an even copper alloy layer.

Applies slit processing to the metal and resin composites using high precision processing.

Evaluates friction and abrasion properties that decide the performance of bearing materials.

Analyzes the surface to check if it is composed and structured as designed.

Impregnates the porous metal layer with resin and imparts abrasion-resistant properties to the product.

All products are inspected by automatic inspection equipment; only those complying with the standards are passed.

Thoroughly tests the riding comfort of cars and motorcycles.

◎ IATF 16949 certified

◎ Powder sintering technology

◎ High-precision processing 　 technology　

Allows the formation of an optimal sintering layer with an oven temperature and atmosphere control technology.

Composite materials, (having different physical properties) for which deformation processing is difficult, are formed and finished in custom sizes.

Building a production system that ensures high quality

We have built a coherent system for everything from designing to production, and we ensure thorough testing at all stages from materials to production in order to meet the various requirements of our customers. Along with maintaining an IATF 16949 certified quality management system, we continue to challenge ourselves to improve even further.

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SMIC's plain bearings use uniquely developed advanced materials, realize high performance by utilizing each of our sintering, impregnating, and forming technologies, and are deemed highly praiseworthy and trustworthy. We seek a "change that is one step ahead" and constantly challenge ourselves to pursue new technologies.

The endless challenge of pursuing technology

Differences between ball bearings and plain bearings

Shaft movement supported on points

Ball bearings

Shaft movement supported on a surface

Plain bearings

- Simple construction that is light, compact, and contributes to reducing total costs.- Demonstrates excellent load resistance, impact resistance, and durability as it supports with a surface.- Oilless type bearings are also available.

Advantages of "plain bearings"

Change that is one step ahead

Technology

PLAIN BEARING CATALOGUE

Facilitates gear switching

For CVT solenoid valvesAdjusts tension belts

Quietens and smoothens opening doors

Smoothens automatic seat reclining

Gives a superb ride

Shock absorbers

Power seat

Door hinge

Timing belt

Transmission

Compressors

Pedal

Shock absorbers

CBE1

CBE1

CBE2

CBE3CBE2CBE4

- Usable in a wide temperature range from 　-200°C to +280°C.- Thin plate materials allow weight reduction and downsizing.- Resin layers, shapes, and sizes can be selected based on usage conditions and characteristics.

For auto tensioners

For door hinges

For moving power seats

For shock absorbers in cars

Smoothens accelerator and brake

For pedals

Structure and features of Clean Metal

Image map of product selection

Shock absorbers

CBE5 CB90

For shock absorbers in motorcyclesReduces impact from the road surface

Features

CB90

CBR2

Withstands high-speed rotation

For compressors

(Please contact us for the specifications.)

Bushing assembly

Lead-free plain bearings for onboard devices

Resin-based plain bearings have a 3-layer structure in which bronze sintered porous back steel is impregnated with fluorine-based resin that has a low coefficient of friction. The resin layer acts as a lubricating substance and makes oilless use possible. Our resin plain bearings are lead-free products possessing the required low-friction, high-load, high-rotation characteristics and used in a variety of products including automotive shock absorbers.

Resin layer Copper alloy layer

Back steel

plain bearings "Clean Metal"

Allo

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(P)

Allowable velocity (V)

CBE4

CBE1

CBE5

CBE2

CBE3CB90

CBR2

Resin-based

The property of a plain bearing is expressed as a "PV value", which is the product of allowable surface pressure ( P ) and allowable velocity ( V ).Allowable surface pressure ( P ) = Maximum load ÷ Project area of the bearingAllowable velocity ( V ) = Relative velocity between the bearing 　and the mating material

PLAIN BEARING CATALOGUE

Internal diameter

External diameter

Flange diameter

External diameter

of the shaft

Internal diameter

of the housingLength of the bushing under the flange Clearance Thickness of

the bushingThickness of

the flange

φd φD φFD φDs φDH 5 6 8 10 12 15 20 25 30 (C)*1 T1 T26 8 +0.053

+0.023 12 6 -0.025 -0.037 8 +0.015

0 ● ● ● ● 0.025 ⁓ 0.102

1.0 0 -0.025 1.0 0

-0.2

8 10 +0.055 +0.025 15 8 -0.025

-0.040 10 +0.015 0 ● ● ● ●

0.025 ⁓ 0.10810 12 +0.060

+0.030 18 10 -0.025 -0.040 12 +0.018

0 ● ● ● ● ●12 14 +0.060

+0.030 20 12 -0.025 -0.043 14 +0.018

0 ● ● ● ● ●

0.025 ⁓ 0.11114 16 +0.063

+0.033 22 14 -0.025 -0.043 16 +0.018

0 ● ● ●15 17 +0.073

+0.038 23 15 -0.025 -0.043 17 +0.018

0 ● ● ●16 18 +0.073

+0.038 24 16 -0.025 -0.043 18 +0.018

0 ● ● ●18 20 +0.081

+0.046 26 18 -0.025 -0.043 20 +0.021

0 ● ● ● ● ● 0.025 ⁓ 0.11420 23 +0.081

+0.046 31 20 -0.025 -0.046 23 +0.021

0 ● ● ● ● ●0.025 ⁓ 0.127 1.5 0

-0.03 1.5 0 -0.222 25 +0.086

+0.051 33 22 -0.025 -0.046 25 +0.021

0 ● ● ● ● ●25 28 +0.093

+0.056 36 25 -0.025 -0.046 28 +0.021

0 ● ● ● ● ● ●

Dimension table

Internal diameter

External diameter

External diameter

of the shaft

Internal diameter

of the housingLength of the bushing Clearance Plate thickness

φd φD φDs φDH 4 5 6 7 8 10 12 15 20 25 30 35 40 50 (C)*1 T4 6 +0.053

+0.023 4 -0.025 -0.037 6 +0.015

0 ● ● ● ●0.025 ⁓ 0.102

1.0 0 -0.025

5 7 +0.053 +0.023 5 -0.025

-0.037 7 +0.015 0 ● ● ● ●

6 8 +0.053 +0.023 6 -0.025

-0.037 8 +0.015 0 ● ● ● ● ●

7 9 +0.055 +0.025 7 -0.025

-0.040 9 +0.015 0 ● ● ●

0.025 ⁓ 0.1088 10 +0.055

+0.025 8 -0.025 -0.040 10 +0.015

0 ● ● ● ● ● ●9 11 +0.060

+0.030 9 -0.025 -0.040 11 +0.018

0 ● ●10 12 +0.060

+0.030 10 -0.025 -0.040 12 +0.018

0 ● ● ● ● ● ● ●12 14 +0.060

+0.030 12 -0.025 -0.043 14 +0.018

0 ● ● ● ● ● ●

0.025 ⁓ 0.111

12.5 14.5 +0.060 +0.030 12.5 -0.025

-0.043 14.5 +0.018 0 ●

13 15 +0.060 +0.030 13 -0.025

-0.043 15 +0.018 0 ● ● ●

14 16 +0.063 +0.033 14 -0.025

-0.043 16 +0.018 0 ● ● ● ●

15 17 +0.073 +0.038 15 -0.025

-0.043 17 +0.018 0 ● ● ● ● ● ●

16 18 +0.073 +0.038 16 -0.025

-0.043 18 +0.018 0 ● ● ● ● ●

17 19 +0.073 +0.038 17 -0.025

-0.043 19 +0.018 0 ● ●

18 20 +0.081 +0.046 18 -0.025

-0.043 20 +0.021 0 ● ● ● ● ● 0.025 ⁓ 0.114

19 22 +0.081 +0.046 19 -0.025

-0.043 22 +0.021 0 ● 0.025 ⁓ 0.124

1.5 0 -0.03

20 23 +0.081 +0.046 20 -0.025

-0.046 23 +0.021 0 ● ● ● ● ● ●

0.025 ⁓ 0.12722 25 +0.086

+0.051 22 -0.025 -0.046 25 +0.021

0 ● ● ● ● ●24 27 +0.086

+0.051 24 -0.025 -0.046 27 +0.021

0 ● ● ●25 28 +0.093

+0.056 25 -0.025 -0.046 28 +0.021

0 ● ● ● ● ● ● ●28 32 +0.115

+0.075 28 -0.025 -0.046 32 +0.025

0 ● ● ● ● ●0.025 ⁓ 0.131

2.0 0 -0.03

30 34 +0.115 +0.075 30 -0.025

-0.046 34 +0.025 0 ● ● ● ● ● ● ● ●

31 35 +0.115 +0.075 31 -0.025

-0.046 35 +0.025 0 ●

32 36 +0.115 +0.075 32 -0.025

-0.050 36 +0.025 0 ● ● ● ●

0.025 ⁓ 0.13535 39 +0.115

+0.075 35 -0.025 -0.050 39 +0.025

0 ● ● ● ● ● ● ● ●

*1 … Clearance is a calculated value of the gap between the shaft and the internal circumference of the Clean Metal bearing press-fitted into a housing with enough stiffness.

*1 … Clearance is a calculated value of the gap between the shaft and the internal circumference of the Clean Metal bearing press-fitted into a housing with enough stiffness.

Diagram of a standard Clean Metal bearing

Diagram of a standard flanged Clean Metal bearing

Part number codes

Part number codes

Copper alloy and an iron-based material bimetal

Metal-based plain bearings

Our metal-based plain bearings, which have a bimetal structure featuring copper powder sintered onto a back steel, have been widely used as plates for hydraulic pumps and as bushings for the undercarriages of construction equipment. We also develop and manufacture lead-free products conforming to the ELV directive and RoHS directive adopted by the European Union (EU).

Copper washers are suitable for preventing the tightened bolts from becoming looseand are used as gaskets to prevent oil leakage from hydraulic equipment, including brake hoses.

Realizes weight reduction with a compact design

Achieves high rigidity and long product life

Working as an oil seal

For undercarriages of construction equipment

For gaskets

For hydraulic pumps and motors

SF bushing

Copper washer

Valve plateSide plateTrack roller

Turning motor

Piston pump

Traveling motor

Brake

● Track roller

Copper washer for gasket

● Gear pump ● Piston pump

PLAIN BEARING CATALOGUE