SF-2 Boundary BearingsZhejiang Fengli Drive Technology Co., Ltd.


SF-2 Boundary Bearings is based on steel plate, the middle spherical sintered bronze powder, the surface rolling modified polyoxymethylene (POM), and contains storage pit. It is suitable for normal temperature conditions, low-speed medium load place to replace the traditional copper sets both reduce costs and extend the service life. In the rolling mill on the use, can save fueling frequency, simplify the replacement process.
The product has been widely used in automotive chassis, forging machine tools, metallurgical mining machinery, engineering machinery, hydropower, steel rolling industry and other fields.

Technical Parameters

Data Code SF-2
Material Steel+Bronze+(POM+Pb)
Applications   Products used in automotive chassis, forging machine tools, metallurgical machinery, mining machinery, water conservancy industry, steel rolling industry.
Max Load Capacity P Static Load N/mm² 140
Dynamic Load N/mm² 70
Max Line Speed V Grease Lubrication m/s 2.5
PV Value Limit Grease Lubrication N/mm²·m/s 2.8
Friction Coefficient u Grease Lubrication 0.06~0.12
Mating Axis Hardness HB >270
Roughness Ra 0.4~1.25
Working Temperature ℃   -60~+120
Thermal Conductivity W/mk   52
Coefficient Of Linear Xpansion   11×10-6/K
In addition to the standard products shown in the catalog, you can also provide non-standard products or order according to customer requirements.