Designs

Housings

SKF roller bearing units are available in various flanged housing series:
  • metric SKF ConCentra units in the FYNT series (fig 1), which can be bolted to flat surfaces
  • units with a locking collar in the FYR and FYE series (fig 2), which can be bolted to flat surfaces
  • units with a locking collar in the FYRP series (fig 3), which can be inserted into a bore in the machine wall
fig 1
fig 2
fig 3
The housings are made of grey cast iron.
SKF ConCentra units in the FYNT series are produced in two housing designs depending on the size (fig 4):
  • housings with a triangular shaped flange for shaft diameters da ranging from 35 to 60 mm
  • housings with a square shaped flange for shaft diameters da ranging from 65 to 100 mm
fig 4
These housings have either three or four drilled holes depending on the design. The area around the holes is strengthened to minimize the risk of cracking caused by possible over-tightening of the attachment bolts.

Locating and non-locating units

All SKF flanged roller bearing units are available as:
  • locating bearing units (fig 5)
  • non-locating bearing units (fig 6)
fig 5
fig 6
Additional information is provided in the section Locating and non-locating units.

Location on the shaft

SKF flanged roller bearing units are located on the shaft in two different ways:
  • with concentric locking via a stepped sleeve (fig 7) for metric SKF ConCentra units
  • with locking collar attachment (fig 8) for inch units
fig 7
fig 8
Additional information about the two types of location is provided in the section Location on the shaft.

Seals

Metric SKF ConCentra units with a flanged housing are produced with:
  • double-lip seals (fig 9)
fig 9
Inch SKF ConCentra units and units with a locking collar are produced as standard with:
fig 10
On request, these units can be supplied with:
fig 11
fig 12
Information about the seal designs is provided in the section Seals.

End covers

End covers are available for flanged roller bearing units fitted at shaft ends:
  • For SKF ConCentra units in the FYNT series, the end covers are made of plastic, for the time being available for sizes 35 to 75 (fig 13)
  • For units with a locking collar, the end covers are made of sheet steel (fig 14)
fig 13
fig 14
Additional information is provided in the section End covers.