SF-1S Stainless Steel Back Self Lubricating Composite Bushing Corrosion Resistant PTFE Sliding Bearing for Marine & Chemical Equipment
Product Details
| Max Static Load: | 250 N/mm² | Max Dynamic Load: | 140 N/mm² |
|---|---|---|---|
| Recommended Oscillating Load: | ≤60 N/mm² | Max Sliding Speed (Dry Friction): | 2.5 M/s |
| Max Sliding Speed (Grease/Oil Lubricated): | 5.0 M/s | Limit PV (Intermittent Dry Operation): | 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): | 0.02 ~ 0.07 | Working Temperature: | -195℃ ~ +280℃ |
| Thermal Conductivity: | 42 W/m·K | Linear Expansion Coefficient: | 11×10⁻⁶ /K |
| Matched Shaft Roughness: | Ra 0.4~1.25μm | ||
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Product Description
Material Structure
3-layer composite sliding bearing:
1. Base backing: Stainless steel substrate (SS304 / SS316), excellent anti-corrosion performance against acid, alkali and seawater
2. Intermediate layer: Sintered spherical bronze powder layer, good thermal conductivity and bonding strength
3. Surface layer: PTFE composite low-friction coating, thickness 0.01~0.03mm, lead-free optional available
Difference from standard SF-1: Stainless steel backing instead of carbon steel, for corrosive working conditions
Features
Stainless steel base, outstanding corrosion resistance, resistant to acid, alkali, seawater and chemical medium
Self-lubricating PTFE surface layer, can run without or with minimal grease, anti-seizure
Low friction coefficient, no crawling for low-speed oscillating motion
Rolled split sleeve design, easy press-fit installation
Lead-free version available for food, pharmaceutical and sanitary applicationsMYWAY
Application
Chemical pumps & valves, marine equipment, food & beverage machinery, pharmaceutical equipment, printing & dyeing machines, corrosive sliding pivot joints.
Stainless steel substrate, superior resistance to acid, alkali and seawater corrosion
✅ Three-layer composite structure with PTFE solid lubricant, maintenance-free / minimal grease
✅ Low friction & anti stick-slip, suitable for oscillating and reciprocating sliding movement
✅ High load capacity, stable dimension over wide temperature range -195~280℃
✅ Lead-free option available, widely used in chemical, marine, food and pharmaceutical machinery
Product Highlights
Material Structure3-layer composite sliding bearing:1. Base backing: Stainless steel substrate (SS304 / SS316), excellent anti-corrosion performance against acid, alkali and seawater2. Intermediate layer: Sintered spherical bronze powder layer, good thermal conductivity and bonding strength3. ...
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