DX/SF-2 Copper-Plated Steel-Backed Boundary Lubricating Bushing (White PTFE)
The product features a lead-free surface, making it suitable for applications with environmental requirements. It is currently used in imported textile machinery, oscillating parts of plunger pumps, and automotive lever mechanisms—operating under moderate load, medium speed, and grease-lubricated conditions.
Technical Parameters
| Parameter | Details |
|---|---|
| Max. Load Capacity P | Dynamic: 250 N/mm² Static: 140 N/mm² |
| Max. Sliding Speed V | Grease Lubrication: 2.5 m/s |
| Max. PV Value | Grease Lubrication: 2.8 N/mm²·m/s |
| Coefficient of Friction μ | Grease Lubrication: 0.05–0.25 |
| Operating Temperature | –40 °C to +130 °C |
| Thermal Conductivity | 4 W/(m·K) |
| Coefficient of Linear Expansion | 12 × 10⁻⁶ /K |
Metallographic Analysis
Modified POM (Polyoxymethylene)
Spherical Bronze Powder
Steel Backing
Electroplated Layer: Copper Plating / Tin Plating