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Balls

Drawn cup needle roller bearings

The bearings:

  • are particularly suitable for applications with a very small radial section height on account of their very low cross-sectional height
  • are used if the housing bore is not suitable as a raceway for needle roller and cage assemblies
  • can support high radial loads (are pure radial bearings)
  • require a considerably smaller radial design envelope than machined needle roller bearings
  • usually run directly on the shaft (no inner ring)
  • permit relatively high speeds
  • are easy to mount
  • require no additional means of axial retention (as a result of which the housing bore is easy to produce)
  • can be readily used to close off the shaft ends of bearing positions (drawn cup needle roller bearings with closed end)
  • result in particularly compact, cost-effective and economical bearing arrangements
Category:
Description

Design variants

Drawn cup needle roller bearings with open ends are available as:

  • standard drawn cup needle roller bearings with open ends and cage
  • full complement drawn cup needle roller bearings with open ends
  • special bearings

Drawn cup needle roller bearings with closed end are available as:

  • standard drawn cup needle roller bearings with closed end
  • special bearings
  • universal joint bearings

Drawn cup needle roller bearings

The outer rings are thin‑walled and produced by forming methods

Drawn cup needle roller bearings are part of the group of radial needle roller bearings. These ready-to-fit bearing arrangement elements are rolling bearings with a very small radial section height. They comprise thin-walled, drawn cup outer rings and needle roller and cage assemblies which together form a complete unit . The cage guides the needle rollers parallel to the axis in pockets.

For bearing arrangements with a very small radial design envelope

Due to the thin-walled outer cup and the absence of an inner ring, the bearings have a very low cross-sectional height. As a result, they are particularly suitable for applications with a very small radial design envelope. The majority of the bearings are of a single row design and do not have a lubrication hole.

Drawn cup needle roller bearings can also be combined with inner rings IR or LR

Due to the absence of an inner ring, drawn cup needle roller bearings require a hardened and ground bearing raceway on the shaft . If the shaft cannot be produced as a rolling bearing raceway, the bearings can be combined with inner rings IR or LR . If wider inner rings are used, these can also serve as the running surface for sealing rings G and SD