SF-2Y lead free boundary lubrication bearing is improved on the basis of SF-2. It can be Applied in the field where environment protection is required. Now it' widely used on textile machines, piston pump, steering system of automobile etc.
| Grade | SF-2Y(yellow) | |
| Material | Steel+Bronze+(POM) | |
| Load capacity | Static load N/mm2 | 140 |
| Dynamic load N/mm2 | 70 | |
| Max line speed m/s | Grease lubrication | 2.5 |
| PVvalue limit N/mm2 · m/s | 2.8 | |
| Friction coef μ | 0.06~0.12 | |
| Mating shaft | Hardness HB | >270 |
| Roughness Ra | 0.4~1.25 | |
| Working temperature°C | -40~+120 | |
| Thermal conductivity W/mk | 52 | |
| Coefficient of linear expansion | 11×10 -6/K | |
Products are used in automobile chassis, forging machine tools, metallurgical machinery, mining machinery, water conservancy industry, steel rolling industry, etc.