ZHEJIANG TOP BEARINGS CO., LTD.
YOUR TOP PARTERNER FOR PLAIN BEARINGS and ROLLING BEARINGS.
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PTFE Self-Lubrication Multilayer Composite Bearings
Description:
· SF 1W is a new type bushing without lead composition which is developed aiming at increasing demands on environmental protection. Besides it is wide application on general machines
Structure:
1.PTFE with fiber 0.01~0.03mm
2.Porous bronze 0.2~0.3mm
3.Steel backing 0.7~2.3mm
4.Tin-plating 0.005mm or copper plating 0.008mm
Technical:
Load capacity: 140N/mm2 Temperature:-195~+280°C
Speed limit: 5m/s Friction coef(u):0.04~0.20
PV LIMIT (Dry):3.6N/mm2 .m/s PV LIMIT (OIL):50N/mm2 .m/s
CHEMICAL CHARACTERISTIC:
| TYPE | In Air | In Vacuum | In water | In Vapor | Weak Acid | middle Acid | Strong Acid | In Alkali |
| SF 1W | OK | OK | OK | OK | BAD | NO | NO | OK |
Application
SF-1W is particularly suitable for food machine, Pharmaceutical machine, tobacco, machine etc.
Quality Control:
MMD-10 Friction & Wear Test:
| Type | Time | Test Condition | Friction coef(u) | TEMP. | Wear | ||
| Lubricate | Speed | Drang | (°C) | (mm) | |||
| SF 1W | 3hr | Dry | 0.4m/s | 3.5N/mm2 | 0.156 | 93 | 0,009 |
| SF 1W | 3hr | Oil | 0.4m/s | 3.5N/mm2 | 0.056 | 52 | 0,01 |
Packaging & Delivery
1. Inner Packing: Bubble Bag, Plastic Bag, Anti-rust Paper;
2. Outer Packing: Carton / Wooden Case;
3. According to customers' requirement
Physical and Mechanical Performance
| Performance Index | Data | Performance Index | Data | ||
| Max. Load | Static Load | 250N/mm² | Friction Coefficient | Grease Lubrication | 0.08~0.20 |
| Dynamic Load | 140N/mm² | Oil Lubrication | 0.02~0.07 | ||
| Oscillation Load | 60N/mm² | Mating Axis | Hardness | >120 HB | |
| Linear Velocity | Grease Lubrication | 2.5 m/s | Roughness | Ra=0.4~1.25 | |
| Oil Lubrication | 5 m/s | Working Temperature | -200~+280℃ | ||
| Max. PV value | Grease Lubrication | 3.6 N/mm²·m/s | Heat-conducting Coefficient | 40 W/(m*k) | |
| Oil Lubrication | 50 N/mm²·m/s | Heat-expansion Coefficient (Axial) | 11*10^-6k | ||
