SKU: WMUB.121420
WMUB121420 Metric Wrapped PTFE Lined Plain Bush 12x14x20mm
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Description
Wrapped PTFE Lined Plain Bushes:These bushes are ideal for dry-running, low-friction, and low-wear applications. Our range of WMU bushes offers excellent sliding characteristics, forming a transfer film that helps protect the mating metal surface. These PTFE bushes are composed of a lead-free polymer fibre mixture, which forms an initial transfer film that creates an oxide-type solid lubricant on the bearing surface. Sintered bronze powder enhances thermal conductivity and acts as a reservoir for the PTFE mixture. The bronze backing ensures high load capacity and efficient heat dissipation, while the copper/tin plating provides excellent corrosion resistance, making these wrapped bearings versatile and durable for a wide range of applications.
Benefits: Self lubricating, corrosion resistant, chemical resistant
- Brand / Quality:
- Simply Plastic Bushes - High Quality
- Inside Diameter:
- 12mm
- Outside Diameter:
- 14mm
- Length:
- 20mm
Technical
| Inside Diameter (d) | 12mm |
|---|---|
| Outside Diameter (D) | 14mm |
| Length (B) | 20mm |
| Overall Length Tolerance | 19.75mm min to 20.25mm max |
| Recommended Housing Size Tolerance | 14mm min to 14.018mm max H7 |
| Shaft Diameter Tolerance | 11.966mm min to 11.984mm max |
| Inside Diameter when Fitted Tolerance | 11.99mm min to 12.058mm max |
| Inside Chamfers Tolerance | 0.1mm min to 0.5mm max |
| Outside Chamfers Tolerance | 0.2mm min to 1mm max |
| Max PV - Dry | 1.8 N/mm squared x m/s |
| Max PV - Oiled | 2.8 N/mm squared x m/s |
| Max Static Load | 250 N/mm squared |
| Max Dynamic Load | 140 N/mm squared |
| Max Sliding Speed - Dry | 2.5 m/s |
| Max Sliding Speed - With Oil | 5 m/s |
| Operating Temperature | -200 to 280 Deg C |
| Thermal Conductivity | 42 W/mk |
| Coefficient of Friction - Dry | 0.02 to 0.20 |
| Coefficient of Friction - With Oil | 0.02 to 0.15 |
| Recommended Shaft Finish (Ra) | 0.04 max N5 |
| Recommended Shaft Hardness (HB) | 200 min |
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