ROBUSTSLIM Low-Profile Swivel Head Bearings

NSK ROBUSTSLIM angular contact ball bearings are designed specifically for swiveling spindle heads and rotary / tilt tables used in machine tools and are suitable for high-precision processing with multi-axis machines. They deliver high rigidity on par with conventional crossed roller bearings, but with lower torque and consequently, reduced energy loss.

ROBUSTSLIM Low-Profile Swivel Head Bearings

Design Features

  • Special design angular contact ball bearings in back-to-back (DB) arrangement
  • With ring guided resin or machined brass cage
  • Non-contact seal on one side (of each bearing)
  • With 35° contact angle
  • With P5 accuracy
  • Available for bore diameters from 130, 170, 220, 340 and 400 mm

Operating Benefits

  • Compact, space-saving design, with a 35% thinner profile than standard angular contact ball bearings
  • High accuracy with low NRRO: 0.5μm or lower was achieved with BRSA130
  • High moment stiffness on par with crossed roller bearings
  • Lower torque than roller bearing alternatives

Fields of Application including

  • Machine Tools