AP-2 Integrated Bearing Assemblies. Based on the design of the AP™ bearing, Timken’s AP-2™ rail bearing is designed for heavier loads. It reduces bearing set outs fuel cost and bearing failure due to water ingress. It also reduces component wear rejection and axle fillet damage, decreasing potential axle failure and ultimately reducing the occurrence of axle grooving.

With Shroud Basic Bearing Assembly Without Shroud Backing Ring (1) Assemblies Backing ring assemblies and/or backing spacer may be used on either side of the bearing. Overall Dimensions for AP Bearings db D Outside Diameter Backing Ring With Shroud Without Shroud On Classes B, C, and D the lubricant fitting extends beyond the axle end cap.