DU® cylindrical bushings are metal-polymer anti-friction bearings designed for dry and lubricated applications in industrial, aerospace, and medical equipment. They feature a steel backing, porous bronze sinter layer, and PTFE-based lining with fillers. The bushings operate from -200°C to 280°C, support dynamic loads up to 140 N/mm², and achieve sliding speeds up to 2.5 m/s dry or 5.0 m/s oil-lubricated. The coefficient of friction ranges from 0.02 to 0.25 dry and 0.02 to 0.12 lubricated. The material meets FAR 25.853 and FAR 25.855 for interior aircraft applications. Shaft surface roughness should be 0.3-0.5 μm for dry running. Dimensions are available in standard inch sizes, with special sizes made to order.
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 | 36DU36 |
| Product Name | DU™ Cylindrical Bushes - Inch Size |
| Bushing Type | Sleeve |
| Design Units | Inch |
| Shaft OD | 2.2489 to 2.2507 inch (57.12 to 57.17 mm) |
| Housing Bore | 2.4365 to 2.4377 inch (61.89 to 61.92 mm) |
| Bearing ID | 2.2500 inch (57.15 mm) |
