DU® cylindrical bushes are metal-polymer anti-friction bearings for dry or lubricated applications in industrial, aerospace, and medical equipment, featuring a steel backing, porous bronze sinter layer, and PTFE-based bearing lining. They operate from -200°C to 280°C, support static loads up to 250 N/mm² and dynamic loads up to 140 N/mm², and offer sliding speeds up to 2.5 m/s dry or 5.0 m/s lubricated. The coefficient of friction ranges from 0.02 to 0.25 dry and 0.02 to 0.12 when lubricated. Approved to FAR 25.853 and FAR 25.855 for aircraft interior use. Shaft surface roughness should be 0.3-0.5 μm for dry operation. The bearing form is available in inch sizes and standard metric dimensions.
Our metal-backed, PTFE-based (polytetrafluoroethy
The metal backing provides mechanical strength, while the bronze sinter layer provides a strong mechanical bond between the backing and the bearing lining. This construction promotes dimensional stability and improves thermal conductivity.
These polymer bearing linings, being predominantly PTFE, offer exceptionally low friction.
| GGB | |
|---|---|
| Product Category | Plain Bearings and Sleeve Bearings |
| Product Number | 10050DU |
| Product Name | DU™ Cylindrical Bushes - Inch Size |
| Bushing Type | Sleeve |
| Design Units | Metric |
| Shaft OD | 3.9349 to 3.9370 inch (99.95 to 100.00 mm) |
| Housing Bore | 4.1339 to 4.1352 inch (105.00 to 105.04 mm) |
| Bearing ID | 3.9370 inch (100.00 mm) |
