Page 790 - Rollingbearings

9 Spherical roller bearings
Appropriate bearing Mounting sealed bearings
housings SKF does not recommend heating sealed
spherical roller bearings above 80 °C
(175 °F) during the mounting process How-
The combination of a spherical roller bear- ever, if higher temperatures are necessary,
ing, appropriate sleeve (where needed), and make sure that the temperature does not
an appropriate SKF bearing housing pro- exceed the permissible temperature of either
vides a cost-effective, interchangeable and the seal or grease, whichever is the lowest
reliable solution that fulils the demand for
easy maintenance Mounting bearings with a tapered
The comprehensive assortment of SKF bore
bearing housings is provided online at
skf com/housings Bearings with a tapered bore are mounted
with an interference it To obtain the proper
degree of interference, one of the following
methods can be used:
Mounting 1 Measuring the clearance reduction

(table 7)
During handling, the rings and roller com-
plement of spherical roller bearings may be 2 Measuring the lock nut tightening angle
axially displaced from their normal position (table 7)
This is especially likely where the bearings
are mounted with the shaft or housing in the 3 Measuring the axial drive-up (table 7)
vertical position:
4 Applying the SKF Drive-up Method
• The roller complement, together with the For bearings with d > 100 mm, SKF rec-
inner or outer ring, will move downward ommends using the SKF Drive-up
and result in no more clearance Method This is a fast, reliable and safe
• When the bearing rings expand or con- method to achieve the appropriate inter-
tract as a result of an interference it, ference it Additional information is avail-
preload is likely to result able online at skf com/drive-up

Therefore, wherever possible: 5 Measuring the inner ring expansion
Additional information is available online
• Mount spherical roller bearings with the at skf com/sensormount
shaft or housing in the horizontal position
9 • Rotate the inner or outer ring to align the For additional information about these
rollers during mounting mounting methods, refer to Mounting bear-
Where this is not feasible, use a bearing ings with a tapered bore, page 203, or the
handling tool or other device to keep the SKF bearing main tenance handbook
bearing components arranged centrally

788