Page 788 - Rollingbearings

9 Spherical roller bearings
Design Fig. 15 Fig. 16

considerations Free space on both sides of the bearing Shaft abutment for a sealed bearing

C a C a
Free space on both

sides of the bearing
d a max
min. 1 to 2 mm
To prevent interference between rotating
bearing parts and stationary machine parts,
free space (C ) should be provided as indi-
a
cated in ig. 15 The requisite width of the
free space depends on:

• the actual misalignment Fig. 17 Fig. 18
• lubricant space requirements Sealed bearing axially located by a KMFE Sealed bearing axially located by a KM(L)
lock nut lock nut with inserted spacer ring
The requisite free space should be at least between lock washer and bearing
20 times the minimum value of the radial
internal clearance in the unmounted
bearing:
• with a cylindrical bore (table 4, page 782)
• with a tapered bore (table 5, page 783)

Abutments for sealed

bearings
KMFE lock nut Spacer ring
The diameter of the shaft abutment should
not exceed d a max (product table, page 792),
certainly for the 1 to 2 mm closest to the
bearing, to prevent interference with the seal
(ig. 16). If the bearings are to be located
9 axially on the shaft by a lock nut, SKF recom-
mends using a KMFE lock nut (ig. 17) or
itting a spacer ring (ig. 18) between the
bearing and the lock washer to prevent
interference with the seal.

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