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Standard bearing unit design

SKF ConCentra roller bearing units consist of a non-split housing, an SKF spherical roller bearing on an SKF ConCentra stepped sleeve, seals and grease. Bearing units for metric shafts are available in two series, depending on the housing design. Bearing units in the SYNT series have a non-split plummer (pillow) block housing with two holes cast into the base for attachment bolts (fig. 1).
fig. 1
Bearing units in the FYNT series have a flanged housing and are produced in two designs :
  • For shaft diameters from 35 to 60 mm, the housings have a triangular flange and three drilled holes for attachment bolts (fig. 2).
  • For shaft diameters from 65 to 100 mm, the housings have a square flange and four drilled holes for attachment bolts (fig. 3).
fig. 2
fig. 3
The bearings used in SKF ConCentra roller bearing units are upgraded SKF Explorer spherical roller bearings in the 222 series. The stepped sleeve has inclined serrations that match the profile of the bearing bore. The bearing unit also contains a mounting collar, washer, back-up collar and wave spring. The mounting collar is equipped with grub (set) screws that are positioned at an angle (not horizontal) to facilitate mounting and dismounting (fig. 4).
fig. 4
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