THK round fixed-side support unit for ball screws with a 10 mm bearing journal diameter. The FK10 contains a factory-preloaded P5 angular-contact bearing set in a DF arrangement, providing accurate shaft positioning and high axial rigidity. Its compact round housing enables straightforward and reliable installation. The unit is supplied complete with its housing, bearing set, holding lid, collars, seals, lock nut and locking screw. Product characteristics Category: Ball screw support units Manufacturer: THK Series: FK Design: Round support unit Mounting position: Fixed side Bearing journal diameter: 10 mm Bearing arrangement: DF angular-contact arrangement Bearing accuracy: P5 Bearing used: 7000 equivalent Preload: Factory adjusted Weight: 0.210 kg Country of origin: Japan Main dimensions Shaft diameter d: 10 mm Overall length L: 27 mm Flange thickness H: 10 mm F: 17 mm E: 29.5 mm Housing location diameter D: 34 mm Housing outside diameter A: 52 mm Mounting-hole pitch-circle diameter: 42 mm B: 42 mm Square dimension T: 16 mm Mounting method A L1: 7.5 mm T1: 5 mm Mounting method B L2: 8.5 mm T2: 6 mm Mounting-hole dimensions Number of mounting holes: 4 Hole spacing: 90° equidistant Through-hole diameter d1: 4.5 mm Counterbore diameter d2: 8 mm Counterbore depth h: 4 mm Holding-lid thread M: M3 Collar dimensions Collar outside diameter D: 13.9 mm Collar thickness t: 5.5 mm Load ratings Basic dynamic axial load rating Ca: 6.08 kN Static permissible axial load: 3.1 kN Axial rigidity: 65 N/μm Components supplied Housing: 1 Precision bearing set: 1 Holding lid: 1 Collars: 2 Seals: 2 Lock nut: 1 Hexagonal socket-head locking screw with set piece: 1 The FK10 is designed for the fixed end of a ball screw and can be paired with a THK FF10 supported-side unit.