DU® cylindrical bushes are metal-polymer anti-friction bearings designed for dry and lubricated applications in industrial, aerospace, and automotive systems. The bearing consists of a steel backing, a porous bronze sinter layer, and a PTFE-based lining with fillers, suitable for linear, oscillating, and rotating motion. It operates from -200°C to 280°C with a maximum static load of 250 N/mm² and dynamic load of 140 N/mm². In dry conditions, it supports sliding speeds up to 2.5 m/s and a pU factor of 1.8 N/mm²·m/s, with a coefficient of friction between 0.02 and 0.25. It meets FAR 25.853 and FAR 25.855 standards for aircraft interior use. Shaft surface roughness should be 0.3-0.5 μm for dry operation. The part is available in inch-size cylindrical forms with no specific dimensions provided for this exact part number.
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 | 100115DU |
| 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) |
