DU® cylindrical bushes are metal-polymer anti-friction bearings designed for dry and lubricated applications in industrial, aerospace, and automotive systems. They consist of a steel backing, a porous bronze sinter layer, and a filled PTFE sliding surface. These bushings support linear, oscillating, and rotating movements with operating temperatures between -200°C and 280°C, static load capacity of 250 N/mm², and dynamic load capacity of 140 N/mm². In dry conditions, they handle 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. They meet FAR 25.853 and FAR 25.855 for interior aircraft use. Shaft surface roughness should be 0.3-0.5 μm for dry operation and ≤0.40 μm for lubricated use, with hardened shafts (HB > 200) recommended for extended life.
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 | 1415 DU-B |
| Product Name | DU™ Cylindrical Bushes - Inch Size |
| Bushing Type | Sleeve |
| Design Units | Metric |
| Shaft OD | 0.5498 to 0.5506 inch (13.97 to 13.98 mm) |
| Housing Bore | 0.6299 to 0.6306 inch (16.00 to 16.02 mm) |
| Bearing ID | 0.5512 inch (14.00 mm) |
