SF-1F Flange Self Lubricating Composite Bushing DU Sliding Bearing Flanged Steel Back PTFE Bushing for Engineering Machinery Hinge Points
Product Details
| Max Static Load: | 250 N/mm² | Max Dynamic Load: | 140 N/mm² |
|---|---|---|---|
| Recommended Oscillating Load: | ≤60 N/mm² | Max Sliding Speed (Dry): | 2.5 M/s |
| Max Sliding Speed (Grease Lubricated): | 5.0 M/s | Limit PV (Intermittent Dry): | 3.6 N/mm²·m/s |
| Recommended Continuous Dry PV: | ≤1.8 N/mm²·m/s | Limit PV (Oil/Grease Lubricated): | 50 N/mm²·m/s |
| Friction Coefficient (Dry): | 0.08 ~ 0.20 | Friction Coefficient (Lubricated): | 0.02 ~ 0.07 |
| Working Temperature: | -195℃ ~ +280℃ | Thermal Conductivity: | 42 W/m·K |
| Linear Expansion Coefficient: | 11×10⁻⁶/K | Matched Shaft Roughness: | Ra0.4~1.25μm |
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Product Description
Material Structure
3-layer composite bearing:
1. Steel backing: low carbon steel, copper/tin plated for anti-rust
2. Sintered bronze intermediate layer: 0.20~0.35mm for good thermal conductivity
3. PTFE+Pb surface lubricating layer: 0.01~0.03mm, forms solid lubricant film during operation
Feature difference from standard SF-1: Integral flanged shoulder for axial positioning & thrust load, no extra retaining ring needed.
Features
Integral flange shoulder, axial stop, simple installation
Self-lubricating, works with no or minimal grease, anti-seizure
Low friction, no crawling under low-speed oscillating movement
Thin wall design, saves radial installation space
Note: PTFE top layer is thin; service life reduced under heavy dust & grit conditions
Application
Hydraulic cylinder ear bushes, construction machinery hinge points, automation equipment, mold guide bushes, agricultural machinery pivot joints, sliding positions requiring axial limitation.
Product Highlights
Material Structure3-layer composite bearing:1. Steel backing: low carbon steel, copper/tin plated for anti-rust2. Sintered bronze intermediate layer: 0.20~0.35mm for good thermal conductivity3. PTFE+Pb surface lubricating layer: 0.01~0.03mm, forms solid lubricant film during operationFeature ...
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