BI-METAL BEARING
BI-METAL BEARING
Discover our plain bearings: Flange bearings, sleeve bushings, and thrust washers. Customizable bushing materials available. Our products are wear-resistant, maintenance-free, and designed to withstand dirt, dust, and corrosion.
Bi-Metal Self-Lubricating Bearing
High tin aluminum plain bearing
Bimetallic bearing is one of the bearings without oil lubrication, the product is made of bimetallic strip with high quality low carbon steel back as the matrix, sintered aluminum-tin bronze alloy on the surface, after several times of high temperature sintering and compact rolling into copper and steel.It has high bearing capacity, impact resistance, high temperature resistance, strong self-lubricating ability and other characteristics, especially suitable for heavy load, low speed, reciprocating or swinging and other occasions difficult to lubricate and form oil film, also not afraid of water and other acid erosion and erosion.
Because the substrate is stable as low carbon steel material, the machining accuracy of the outer diameter is guaranteed, and after the product is loaded into the seat hole, there is no need for screw fixation, so the interference fit can prevent the phenomenon of going round outside.The change of chemical composition of inner surface alloy layer can meet the requirements of different bearing pressure, different service temperature and different sliding speed, and the design of oil groove and oil hole with different structure of friction surface in production can meet the requirements of different refueling methods, and can prevent the phenomenon of biting shaft.
Bimetallic bearing has the advantages of good wear resistance, especially suitable for medium speed, medium load and low speed and high load.Various oil slots, oil holes and oil holes can be machined on the friction surface by special technological means, so as to adapt to the use under different lubrication conditions.The products are mainly used in the balance bridge bushing and gasket of heavy vehicles.Automobile engine, chassis, motorcycle clutch, gear pump wipe plate and lifting equipment and other fields.
Standard white metal bearing, Heavy maintenance
Wrapped bushing, steel/ aluminum
Bimetal is a maintenance-bound composite sliding bearing. Oil or grease lubrication is necessary.
Custom-made metal and bi-metal bushings solutions and special designs based on your individual requirements,Bimetal bearings Material:CuPb10Sn10 CuPb24Sn4 CuPb30 AlSn20Cu.Get a free quote!
I.D. * O.D Flange Size,MM Housing H7,Shaft F7, remove burrs and sharp edges, thickness mm.Steel Backed Bronze,All Dimensions in mm, or inch size, and customized size design,
The split of Bi-metal wrapped bushes, butterfly joint, Buckle, hasp, flange weld on sleeve bearing.
- Materials
- Support material Steel, tin-plated
- Sliding layer aluminum
Standard white metal bearing, Heavy maintenance
High tin aluminium base bearing is made of steel plate with AISn20Cu rolled on the surface.The product has the characteristics of medium fatigue strength and bearing capacity, good corrosion resistance and good sliding performance.This product is commonly used as small and medium power internal combustion engine bearing bush, train engine bearing bush, air compressor bearing sleeve, is a new product to replace bimetal alloy.
| Alloy coating material | AISn20Cu |
| Maximum bearing pressure | 30N/mm² |
| Maximum service temperature | 150℃ |
| Alloy layer hardness | HB30~40 |
Range Of Application
High sliding speed, engine construction
Structures
1. Sinter bronze powder: good wear resistance and excellent load carrying capacity.
2. Steel backing: provides exceptionally high load carrying capacity, excellent heat dissipation.
3. Copper plating thickness 0.002mm provides good corrosion resistance.
Characteristics
The JF bi-metallic self-lubricating bearing uses a high quality low carbon steel plate as the base, porous sintered bronze as the surface, suitable for oscillating and alternating rotary movements under high load conditions. Slow speed, low friction, good resistance wear, long life and better prevent snagging.The surface of the bronze layer can be machined with various grooves, oil pockets in terms of different working conditions.The product is widely used in mining machinery, automotive, construction machinery, agricultural equipment, the steel rolling industry, etc. .
Metal, Bimetal & Steel Bearings
Available Forms
Bushes, flange bushes, thrust washers, strip and other non-standard parts and so on.
Bimetal Bearings
| Nominal think | 1 | 1.5 | 2 | 2.5 | 3 | 3.5 | 4 | 5 |
| Thickness of steel backing | 0.6 | 1 | 1.4 | 1.9 | 2.3 | 2.8 | 3.2 | 4 |
| Thickness of bronze layer | 0.4 | 0.5 | 0.6 | 0.6 | 0.7 | 0.7 | 0.8 | 1.0 |
| Manufacturable wall thickness | 1+0.25+0.15 | 1.5+0.25+0.15 | 2+0.25+0.15 | 2.5+0.25+0.15 | 3+0.25+0.15 | 3.5+0.25+0.15 | 4+0.25+0.15 | 4+0.25+0.15 |
| Manufactural wall thickness | 1-0.025 | 1.5-0.03 | 2-0.035 | 2.5-0.04 | 3-0.045 | 3.5-0.05 | 4-0.055 | 4-0.06 |
Design
Alloy Chemical Compositions
| Nominal thickness | JF-800 | JF-720 | JF-700 | JF-20 |
|---|---|---|---|---|
| Cu | Remainder | Remainder | Remainder | 0.7~1.3 |
| Pb | 9.0~11.0 | 21.0~27.0 | 26.0~33.0 | – |
| Sn | 9.0~11.0 | 3.0~4.5 | 0.5 | 17.5~22.5 |
| Zn | 0.5 | 0.5 | 0.5 | |
| P | 0.1 | 0.1 | 0.1 | – |
| Fe | 0.7 | 0.7 | 0.7 | 0.7 |
| Ni | 0.5 | 0.5 | 0.5 | 0.1 |
| Sb | 0.2 | 0.2 | 0.2 | – |
| Ai | – | – | – | Remainder |
| Si | – | – | – | 0.7 |
| Mn | – | – | – | 0.7 |
| Ti | – | – | – | 0.2 |
| Otder | 0.5 | 0.5 | 0.5 | 0.5 |
Technical Data
| Nominal thickness | JF-800 | JF-720 | JF-700 | JF-20 | |
|---|---|---|---|---|---|
| Load limit N/mm2 | 150 | 130 | 120 | 100 | |
| Tensile strengthN/mm2 | 150 | 150 | 200 | 200 | |
| Speed limit v max. m/s | 5 | 10 | 15 | 25 | |
| Friction coefficient(oil) | 0.06~0.14 | 0.06~0.16 | 0.08~0.16 | 0.08~0.17 | |
| PV limit N/mm2 m/s | Grease | 2.8 | 2.8 | 2.5 | – |
| oil | 10 | 10 | 8 | 6 | |
| “Sapphire”fatigue class | 125 | 115 | 105 | 85 | |
Steel Lead Bronze Alloys Data
| Material type | JF-800 | JF-720 | JF-700 | JF-20 |
|---|---|---|---|---|
| Specification of bronze | CuPb10Sn10 | CuPb24Sn4 | CuPb30 | AlSn20Cu |
| Equivalent standard code | USA: SAE-797 GERMANY: GLYCO 66 JAPAN: JIS-LBC3 |
USA: SAE-799 GERMANY: GLYCO 68 JAPAN: JIS-LBC6 |
USA: SAE-48 JAPAN: JIS-KJ3 |
USA: SAE-783 GERMANY: GLYCO 74 JAPAN: JIS-AJL |
| Hardness of bronze alloy HB | 70~100 | 45~70 | 30~45 | 30~40 |
| Maz.dynamic Load N/mm2 | 65 | 38 | 25 | 30 |
| Max.temperature | 260 | 200 | 170 | 150 |
| Remark | The strongest type, wide application field, most suitable for high impact vibrating load bushes and Washers. | Relative high fatigue strength & load capacity, good sliding performance. poor oil corrosion resistance. Fit for middle load, middle speed. Normally applied in main bushes of lnner-combustion engine. Connecting rod when plated. | Good seizuring resistance good capacity to submerge foreign, overlayer plated normally applied in main bearings of high speed, low to morderate load inner-combustion engine & connecting rod bearing． | Moderate fatigue strength & load capacity, good corrosion resistance, relative good sliding performance. Normally they are applied in half bush with high speed, low load inner combustion engine, air compressor, refrigerator bearings. |
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