DU® cylindrical bushings are metal-polymer anti-friction bearings for dry and lubricated use in industrial and aerospace applications. They feature a steel backing, porous bronze layer, and PTFE-based lining with fillers. Operating temperature ranges from -200°C to 280°C. Static load capacity is 250 N/mm²; dynamic load is 140 N/mm². Maximum sliding speed is 2.5 m/s dry and 5.0 m/s under oil lubrication. Maximum pU factor is 1.8 N/mm²·m/s dry and 5.0 N/mm²·m/s lubricated. Coefficient of friction is 0.02-0.25 dry and 0.02-0.12 lubricated. Shaft surface roughness should be 0.3-0.5 µm dry and up to 0.40 µm lubricated, with shaft hardness exceeding 200 HB. Approved to FAA FAR 25.853 and FAR 25.855.
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 | BB1209DU-B |
| Product Name | DU™ Cylindrical Bushes - Inch Size |
| Bushing Type | Flanged |
| Design Units | Metric |
| Shaft OD | 0.4711 to 0.4718 inch (11.97 to 11.98 mm) |
| Housing Bore | 0.5512 to 0.5519 inch (14.00 to 14.02 mm) |
| Bearing ID | 0.4724 inch (12.00 mm) |
