SKF indexing roller units are based on double (fig. 1) or four-row full complement cylindrical roller bearings (fig. 2). These units:

  • are non-separable
  • comprise a very thick-walled outer ring
    • with three integral flanges
    • with a cylindrical outside surface, either relieved towards the side faces or with chamfers
  • comprise two inner rings, each with an integral flange
  • are sealed on both sides with an FKM O-ring fitted in the inner ring flange groove
  • are filled with the high-quality SKF grease LGEV 2 (table 1)
  • are virtually maintenance-free
    However, most of these units can be relubricated via lubrication grooves in the flangeless side faces of the inner rings (fig. 3).


O-rings made of FKM (fluoro rubber) exposed to an open flame or temperatures above 300 °C (570 °F) are a health and environmental hazard! They remain dangerous even after they have cooled.

Read and follow the safety precautions under this WARNING.

SKF logo