China Suppliers Self-Lubricating Composite Bearing Sleeve from Leading Factory for Automotive Seating Applications
The SF bearing is a self-lubricating sliding bearing that adopts a three-layer composite structure as its core design. Through meticulous material selection and structural optimization, it excels in oil-free lubrication, high wear resistance, and adaptability to complex working environments. These features make it an ideal solution for scenarios where traditional lubrication methods are difficult to implement or where high maintenance costs are a concern.
SF bearings are widely used in various industrial fields, such as metallurgy, mining, machinery, and automotive industries. They are particularly suitable for scenarios where traditional lubrication is difficult to achieve (such as oil-free or difficult-to-oil environments) or where maintenance costs are high. SF bearings, with their self-lubricating, high wear-resistant, and adaptable features, have become a new type of bearing that can replace roller bearings, oil-containing bearings, and copper alloy bearings.
- 1 SF bearings do not require external lubrication and are suitable for scenarios where refueling is not possible or maintenance is difficult.
- 2 The friction coefficient of SF bearings is low, with a dry friction of approximately 0.04~0.20, reducing energy loss and heat generation.
- 3 SF bearings have high wear and corrosion resistance — PTFE layer is resistant to chemical corrosion and bronze powder layer enhances wear resistance.
- 4 SF bearings have good running-in performance, protecting the surface of the grinding shaft and avoiding shaft biting.
- 5 SF bearings have low noise and seismic resistance, which can reduce mechanical vibration and operating noise.
- 6 SF bearings have high adaptability and a wide temperature range, with a working temperature range of -195℃~+240℃.
SF bearings are commonly used in printing machines, food machinery, textile machines, micro motors, automotive suspension systems, agricultural machinery, etc.
| Max. load | Static | 250 N/mm² |
| Very low speed | 140 N/mm² | |
| Rotating oscillating | 60 N/mm² | |
| Max. PV Dry running | Short-term operation | 3.6 N/mm²·m/s |
| Continuous operation | 1.8 N/mm²·m/s | |
| Operation Temperature range | -195ºC ~ +280ºC | |
| Friction coefficient | 0.03 ~ 0.20 | |
| Max speed | Dry running | 2 m/s |
| Hydrodynamic operation | >2 m/s | |
| Thermal conductivity | 42 W(m·K)⁻¹ | |
| Coefficient of thermal expansion | 11×10⁻⁶ K⁻¹ | |