INA Screw Drive Bearings

Axial angular contact ball bearings ZKLF


  • double row angular contact ball bearing with 60° contact angle
  • outer ring suitable for flange mounting
  • split inner ring with defined gap for matching of preload
  • high limiting speeds, even with grease lubrication
  • greased for life in most applications

Fast and economical mounting

For the exact positioning of the bearing, the only procedure required is to move the screw drive nut to both positions.

During the positioning process, the position of the screw drive serves as the reference. The bearing mounting screws are first hand-tightened.

This mounting procedure aligns the spindle and the bearing in the optimum position.

Next, the bearing retention screws are tightened using the specified torque. Tests have demonstrated that the retention forces of the screw connection are sufficient to transmit the radial forces that occur under real-life conditions (such as belt-pull).

Since this type of mounting prevents constraining forces, the radial loads on the bearing and screw drive are reduced. This contributes to an increased service life of the entire screw drive.



  • double direction axial cylindrical roller bearing with radial bearing component
  • easy-to-fit by means of outer ring suitable for flange mounting
  • for supporting very high axial loads and tilting moments
  • axial runout tolerance within P4 DIN620

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