Angular Contact Ball B. FAG 3318

The FAG 3318 angular contact ball bearing, measuring 90 × 190 × 73 mm, can accommodate high radial loads as well as axial loads on both sides, whilst saving valuable axial installation space.

This double-row angular contact ball bearing 3318 transmits combined loads via two separate rows of balls. Thanks to its open design without integrated lip seals, the rolling bearing is suitable for applications where lubrication is provided by the customer using grease or oil. FAG manufactures the inner and outer rings, as well as the rolling elements, from standard rolling-bearing steel (100Cr6), which ensures excellent dimensional stability under demanding operating conditions.

What loads can the 3318 double-row angular contact ball bearing accommodate?

The bearing is specifically designed to accommodate combined loads consisting of radial forces and axial forces acting on both sides. A double-row design functionally corresponds to two single-row angular contact ball bearings mounted opposite each other in an O-arrangement; however, it requires less axial space on the shaft than a separately assembled bearing set. Furthermore, due to the fixed internal alignment, there is no need to adjust the axial bearing clearance during assembly, which simplifies installation in shaft guides with varying axial loads.

What are the key features of the version with a sheet steel cage and standard clearance?

The robust sheet steel cage guides the rolling elements precisely along their raceway and is approved for a temperature range of –20 to +150 degrees Celsius. Thanks to the standard radial clearance and manufacture to tolerance class P0 (ABEC 1), the 3318 angular contact ball bearing can be fitted as standard into cylindrical housing bores. The outer ring has neither a flange nor a ring groove, which allows for straightforward axial mounting in smooth bearing seats.