BR1 series products
BR1B bronze base rolled bushing
BR1B bronze base bearing is made of tin bronze as the base, sintered bronze spherical powder in the middle, and rolled PTEE and high-temperature resistant filler material on the surface. It has a high safety factor, and is especially suitable for places where continuous work can not be stopped for repair and places where high temperature can not be refueled.
PTFE is designed for full dry friction, and a variety of materials have been developed based on lubrication, friction coefficient and durability requirements. BOYEE's PTFE metal composites can provide the best performance in the broadest range of load, speed and temperature with or without external lubrication.
Metallographic analysis
1. Polytetrafluoroethylene and lipophilic fiber mixture
2. Spherical bronze powder
3. Copper back
Product characteristics&Application area
Product characteristics
- 1. The mixture of PTFE and lead can form a good transfer film to protect the grinding shaft during movement;
- 2. The sintered layer and copper substrate have good thermal conductivity, which can quickly transfer the heat generated during operation;
- 3. Copper has self-lubricating property and can be used for parts that cannot be shut down for maintenance due to long-term operation;
- 4. The matrix copper has good corrosion resistance and can be used in weak acid and strong alkali occasions;
- 5. Have good bearing capacity;
- 6. The products have been widely used in metallurgical steel industry, high-temperature furnace steel ring parts, cement grouting pump, screw conveyor, port machinery and ship machinery, etc;
- 7. The steel sleeve can be assembled externally; Or it can be made into flanging to achieve the effect of simultaneous use of inner hole and end face;
Application area
- At present, it has been widely used in metallurgical steel industry, billet raceway of continuous casting machine, equipment in front of high-temperature furnace, cement grouting pump and screw conveyor, port machinery and ship machinery, etc
| performance index | relevant data | |
|---|---|---|
| Maximum bearing pressure P | Quiet load | 250N/mm2 |
| Move load | 140N/mm2 | |
| Maximum linear speed V | Dry friction | 2m/s |
| Oil lubrication | 5m/s | |
| Maximum PV value | Dry friction | 3.6N/mm2·m/s |
| Oil lubrication | 50N/mm2·m/s | |
| Friction coefficient μ | Dry friction | 0.08~0.20 |
| Oil lubrication | 0.02~0.07 | |
| Working temperature | -200℃~+280℃ | |
| Thermal conductivity | 40w/m·k | |
| Coefficient of linear expansion | 18×10-6/k | |
