Combined Needle Roller Bearings

Compact bearings built to handle radial and axial loads

IKO manufactures an economical series of combined needle roller bearings, comprised of both radial and thrust bearings. Caged needle roller bearings act as radial bearings, while thrust ball or roller bearings serve as thrust bearings. This series is available in four styles, including designs that incorporate thrust ball bearings, thrust roller bearings, angular contact ball bearings or three-point contact ball bearings. Applications include machine tools, textile equipment and industrial machinery.

Needle roller bearings with thrust ball bearings are designed to handle thrust loads across a wide range of applications.

  • Optional dust cover prevents grease leakage and dirt penetration in demanding environments. Dust cover is made of a thin steel plate and fixed to a groove on the outer ring collar.
  • Optional inner ring bearing style available.

Needle roller bearings with thrust roller bearings are also designed for thrust loads, but feature higher axial load ratings than versions using thrust ball bearings.

  • Minimal elastic deformation of rolling contact surfaces under load.
  • High rotational accuracy for both horizontal and vertical shafts achieved by precisely finished thrust bearings.
  • Optional dust cover prevents grease leakage and dirt penetration in demanding environments. Dust cover is made of a thin steel plate and fixed to a groove on the outer ring collar.
  • Optional inner ring bearing style available.

Needle roller bearings with angular contact ball bearings are designed to withstand heavy radial loads and unidirectional axial loads at the same time..

  • Meets international dimension series 59 based on ISO standards.
  • When the axial load exceeds 25% of the radial load, the radial load will be induced onto the angular contact ball bearing and the bearing life will be affected. Therefore, the relationship between the two loads must be carefully considered.

Needle roller bearings with three-point contact ball bearings withstand heavy radial loads and bidirectional axial loads at the same time during high-speed rotation.

  • Noninterchangeable inner rings are separated at the center of the ball raceway surface, and must be firmly tightened against shaft in the axial direction.
  • Axial clearance is 0.1-0.3 mm.
  • When the axial load exceeds 25% of the radial load, the radial load will be induced onto the angular contact ball bearing and the bearing life will be affected. Therefore, the relationship between the two loads must be carefully considered.