PRM 252820
Wrapped bronze straight bushingSKF wrapped bronze straight (cylindrical) bushings are suitable for oscillating, rotating and linear movements, and can accommodate radial loads. They are an excellent solution for dirty environments where high levels of contamination make relubrication necessary. Their sliding surface has diamond-shaped pockets that serve as reservoirs to progressively release lubricant during operation.
- Insensitive to dirty environments
- Resistant to impact loads and vibrations at slow speeds
- Good corrosion resistance
Description
| Material | Wrapped bronze |
| Operating temperature | min. -40 °C |
| Operating temperature | max. 150 °C |
Dimensions
| d | 25 mm | Bore diameter |
|---|---|---|
| D | 28 mm | Outside diameter |
| B | 20 mm | Width |
Recommended fits
| Tolerance shaft | f7 |
| Tolerance housing | H7 |
Calculation data
| Specific dynamic load factor | K | 40 N/mm² |
|---|---|---|
| Specific static load factor | K0 | 120 N/mm² |
| Permissible sliding velocity | v | max. 1 m/s |
| Coefficient of friction | µ | min. 0.08 |
| Coefficient of friction | µ | max. 0.15 |
Mass
| Mass bushing | 0.021 kg |
Tolerances and clearances
Bushing data
Design of bushing arrangements
