SKU: PCM303420E-SKF
SKF PCM303420E Metric Plain Bush 30x34x20mm
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Description
PCM-E Plain Bushings: Plain bushings of triple-layer PTFE composite material. Suitable for bearing arrangements that have to support radial loads only. For slow rotational or oscillating movements. Initial lubrication not required. Maintenance-free.
PTFE E composite: PTFE composite bearings consist of a copperplated sheet steel backing on which a 0,2 to 0,4 mm (0.008 to 0.015 inch) thick porous layer of tin/bronze is sintered. By a rolling process, the pores of the sintered layer are filled with a mixture of PTFE (polytetrafluoroethylene) and molybdenum disulphide. An additional 5 to 30 mm thick running-in layer of the mixture is then applied to the sintered tin/bronze. This additional layer provides an optimum combination of the mechanical properties of the sintered tin/bronze and the good sliding and lubricating properties of the PTFE mixture. PTFE composite bearings have
good dimensional stability and thermal conductivity.
- Brand / Quality:
- SKF - High Quality
- Inside Diameter:
- 30mm
- Outside Diameter:
- 34mm
- Length:
- 20mm
Technical
| d | 30mm |
|---|---|
| D | 34mm |
| B | 20mm |
| c1 min | 0.1mm |
| c1 max | 0.7mm |
| c2 min | 0.8mm |
| c2 max | 1.6mm |
| a | +8 20 degrees |
| Tolerance shaft | f7 |
| Tolerance housing | H7 |
| Basic dynamic load rating - radial direction ( C ) | 46.5 kN |
| Basic static load rating - radial direction ( C0 ) | 143 kN |
| Specific Dynamic Load Factor ( K ) | 80 N/mm? |
| Specific Static Load Factor ( K0 ) | 250 N/mm? |
| Factor depending on material and bearing type | 480 KM |
| Permissable Sliding Velocity ( v ) | min. 0 m/s |
| Permissable Sliding Velocity ( v ) | max. 2 m/s |
| Coefficient of Friction ( y ) | min. 0.03 |
| Coefficient of Friction ( y ) | max. 0.25 |
| Weight | 0.03kg |
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