Fixed bearing LAF-B-Z 12 for ball screw 20 x 5/10/20/40 - Bosch Rexroth R159001200

At the screw end of a ball screw assembly in size 20 x 5/10/20/40, this bearing absorbs the axial forces of the screw and locates it lengthwise. The LAF-B-Z 12 offers a dynamic load capacity of 17000 N and a static load capacity of 24700 N; the limiting speed with grease lubrication is 3800 min⁻¹.

The unit comprises: angular-contact thrust ball bearing LGF, slotted nut NMA or NMZ. It fits screw ends of type 51, 51A, 52, 52A, 81, 81A, 82, 82A, 91, 91A, 92, 92A.

Benefits

• Dynamic load capacity C = 17000 N, static load capacity C0 = 24700 N
• Axial bearing rigidity RFB 375 N/μm
• Tilting rigidity Rkl 50 Nm/mrad
• Limiting speed with grease 3800 min⁻¹
• Frictional torque with seal 0.16 Nm
• Outer diameter D 55 mm for the mounting bore

Installation note

A floating bearing is fitted at the opposite screw end to take up the thermal expansion of the screw.