Design for SKF spherical roller thrust bearings

Abutment dimensions

The abutment dimensions da min and Da max listed in the SKF bearing size chart apply for axial bearing loads Fa ≤ 0,1 C0.

For heavier bearing loads, it may be necessary to support the shaft and housing washers over their entire side faces (da = d1 and Da = D1).

Abutment dimensions for spherical roller thrust bearings
Abutment dimensions for spherical roller thrust bearings

For heavy loads, where P > 0,1 C0, the shaft washer bore must be fully supported by the shaft, preferably by an interference fit. Even the housing washer should be radially supported.

For additional information about dimensioning washer supports, contact the SKF application engineering service.

Recessed housing bore for bearings with a stamped steel cage

Recessed housing bore for bearings with a stamped steel cage
Recessed housing bore for bearings with a stamped steel cage

For bearings fitted with a stamped steel window-type cage, the housing bore must be recessed to prevent the cage from contacting the housing during possible misalignment. SKF recommends the following guideline values for the recess diameter:

  • D + 15 mm for bearings with an outside diameter D ≤ 380 mm
  • D + 20 mm for bearings with an outside diameter D > 380 mm

Axial clearance in bearing arrangements

Minimum load requirements for spherical roller thrust bearings
Minimum load requirements for spherical roller thrust bearings

SKF spherical roller thrust bearings in face-to-face or back-to-back arrangement should be preloaded. However, at the relatively low speeds shown within the green area, the application can be designed to operate with a small axial clearance. For these applications, bearings with a modified shaft washer (designation suffix VU029) should be used. Small axial clearance enables simple and cost-effective bearing arrangements to be used, e.g. for horizontal shaft applications at relatively low speeds, as no external preload is necessary.

For additional information about bearing arrangements with axial clearance, contact the SKF application engineering service.

Share



Related products

Related numbers

SKF 293/710EM bearings
710mm x 1060mm x 212mm
SKF 29322E bearings
110mm x 190mm x 48mm
SKF 29328E bearings
140mm x 240mm x 60mm
SKF 29340E bearings
200mm x 340mm x 85mm
SKF 29352E bearings
260mm x 420mm x 95mm
SKF 29413E bearings
65mm x 140mm x 45mm
SKF 29414E bearings
70mm x 150mm x 48mm
SKF 29420E bearings
100mm x 210mm x 67mm