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BRT-800 Bi-metal Bushing
BRT-800 Bi-metallic composite bearing material consists of steel backing with lead bronze or lead-free copper alloy （CuPb10Sn10、CuPb6Sn6Zn3、CuPb24Sn4、CuPb30、AlSn20Cu）lining, bearing material for oil/grease lubricated applications. The copper alloy forms a continuously frame for thermal conductivity. These bearing structures are with high load capacity and good fatigue property. Higher tolerance can be achieved after re-machined from the customers. Lead-free bronze lining bearing material conforms to the European RoHS directive.
Product Description
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BRT-800 Bi-metallic composite bearing material consists of steel backing with lead bronze or lead-free copper alloy （CuPb10Sn10、CuPb6Sn6Zn3、CuPb24Sn4、CuPb30、AlSn20Cu）lining, bearing material for oil/grease lubricated applications. The copper alloy forms a continuously frame for thermal conductivity. These bearing structures are with high load capacity and good fatigue property. Higher tolerance can be achieved after re-machined from the customers. Lead-free bronze lining bearing material conforms to the European RoHS directive.
Application
Angineering machine: underpan, thrust wheel, Towing wheel, Steering knuckle,tension pulley…
Automotive:trunnion shaft, connecting rod, valve rocker, camshaft, gear box, internal-combustion engine,
And Plunger pump friction plate, gear pump friction plate…
Tolerance of Wall Thickness
Oil Groove
Buckle Form
BRT-800 Tech. Deta
| The use of parameters |  |
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|---|---|---|---|---|---|
| Parameters | BRT-800 Bimetal Bushing |
BRT-801 Bimetal Bushing |
BRT-802 Bimetal Bushing |
BRT-803 Bimetal Bushing |
BRT-08G Bimetal Bushing |
| Material type | CuPb10Sn10/ CuSn6Zn6Pb3 | CuPb24Sn4 | CuPb30 | AlSn20Cu | CuPb10Sn10+Graphite |
| Hardmess of bronze alloy | 70~100HB | 45~70HB | 30~45HB | 30~40HB | 60~90HB |
| Max. dynamic Load | 65N/mm² | 38N/mm² | 25N/mm² | 30N/mm² | 90N/mm² |
| Sapphire” fatigue class | 125 | 115 | 105 | 105 | – |
| Friction coefficient(oil) | 0.06~0.14 | 0.06~0.16 | 0.08~0.16 | 0.08~0.17 | <0.08 |
| PV limit(Grease) | 2.8N/mm².M/s | 2.8N/mm².M/s | 2.5N/mm².M/s | – | 2.8N/mm².M/s |
| PV limit(Oil) | 10N/mm².M/s | 10N/mm²2.M/s | 8N/mm².M/s | 6N/mm².M/s | 10N/mm².M/s |
| Max. temperature | 260℃ | 200℃ | 170℃ | 150℃ | 200℃ |
| Load limit | 150N/mm² | 130N/mm² | 120N/mm² | 100N/mm² | 90N/mm² |
| Speed limit v max. | 5m/s | 10m/s | 15m/s | 25m/s | 5m/s |
| Hardness of mating surface | 53 HRC | 50 HRC | 270 HB | 250 HB | 53 HRC |
| Tensile strength | 150N/mm² | 150N/mm² | 200N/mm² | 200N/mm² | 185N/mm² |
