GGB Metal-Polymer Anti-Friction Bearings 1720 DP4®

DP4 metal-polymer plain bearings provide low friction and wear resistance in dry, oil, and grease-lubricated conditions for linear, oscillating, and rotating motions. Available as cylindrical, flanged, and thrust bearings, they comply with RoHS, WEEE, and ELV standards. Approved for oxygen systems up to 60°C and 25 bar per DIN EN 1797:2002-02 and ISO 21010:2004-04, and meet FAR 25.853 and FAR 25.855 for aircraft interiors. Operating temperature range is -200°C to 280°C. Dry sliding speed maximum is 2.5 m/s with pU limit of 1.0 N/mm²·m/s and friction coefficient of 0.04-0.25. Under oil lubrication, speed reaches 5.0 m/s with pU of 10.0 N/mm²·m/s and friction of 0.02-0.08. Shaft roughness should be 0.3-0.5 μm dry, ≤0.40 μm lubricated; hardness above 200 HB improves life.