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Mounting Rolling Bearings: Measurement Report Form

This document provides guidance on safely handling and mounting rolling bearings. It recommends using gloves and specialized tools to lift heavy bearings. When preparing components for mounting, coat bearing seats with a thin layer of light oil for a tight fit or anti-fretting agent for a loose fit. Lifting tackle should support large bearings from below to avoid deformation, and eye bolts in bearings are only for the bearing's weight when loaded along the shank axis. When mounting a housing over an in-place bearing, use three-point suspension with an adjustable sling for alignment.

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205 views3 pages

Mounting Rolling Bearings: Measurement Report Form

This document provides guidance on safely handling and mounting rolling bearings. It recommends using gloves and specialized tools to lift heavy bearings. When preparing components for mounting, coat bearing seats with a thin layer of light oil for a tight fit or anti-fretting agent for a loose fit. Lifting tackle should support large bearings from below to avoid deformation, and eye bolts in bearings are only for the bearing's weight when loaded along the shank axis. When mounting a housing over an in-place bearing, use three-point suspension with an adjustable sling for alignment.

Uploaded by

kuruvillaj2217
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as PDF, TXT or read online on Scribd
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Mounting rolling bearings

Measurement report form

Bearing:

Bearing position:

Application:

Lb
La
Lb
La 1
2
a b 1
a b 2
3 3
4
4

Measuring Shaft Housing


directions Measurement values [mm] Measurement values [mm]
at place at place

a b (c) (d) a b (c) (d)


Distance L Distance L

Diameter d Diameter D

Calculated mean: (1+2+3+4)/4 Calculated mean: (1+2+3+4)/4

Remarks:

Date: Checked by:

48
Bearing handling

… Housing seats are usually checked in two Bearing handling


places with an internal micrometer or other
comparable measuring gauge. Be sure to SKF recommends using gloves as well as carrying
measure in four directions († fig. 1, page and lifting tools that have been specially designed
46). For large seats, measuring in three or for mounting bearings. In addition to being a 2
four places might be needed. safety issue, using the proper tools will save time
… Record the measurement values of the shaft and effort.
and bore diameters for future reference. Use When handling hot or oily bearings, SKF
the measurement report form. recommends wearing the appropriate heat or oil
resistant gloves († Gloves, page 73).
When measuring, it is important that the com- Heated bearings and larger, heavier bearings
ponents and the measuring instruments are can be difficult for one or two persons to handle
at the same approximate temperature. This is safely. In these instances, satisfactory equipment
particularly important where large bearings and for lifting and transporting the bearing should
their associated components are concerned. be used († figs. 5 and 6).

Safety
Fig. 5
To minimize the chance of injury, when handling
or mounting bearings:

… Always wear gloves, especially when handling


heated bearings or working with lubricants.
… Always use appropriate lifting or carrying
tools.
… Never strike the bearing directly with any
hard object such as a steel hammer or a
chisel.

Preparing components
Before mounting a bearing, prepare the associ-
ated components and do the following:

… Mount any components that are on the shaft


in front of the bearing.
Fig. 6
… For a tight shaft and/or housing fit, coat the
bearing seat(s) with a thin layer of light oil.
… For a loose shaft and/or housing fit, coat the
bearing seat(s) with SKF Anti-fretting agent.
… If the shaft or sleeve is equipped for oil injec-
tion, make sure that the ducts and grooves
are clean.

49
Mounting rolling bearings

Fig. 7
Bearing handling tools are available from SKF
(† fig. 7). For large, heavy bearings, use lifting
tackle that supports the bearing from the bot-
tom († fig. 8). Never suspend the bearing from
a single point, as it could permanently deform
the rings. A spring between the hook and tackle
(† fig. 5, page 49) can facilitate positioning the
bearing onto the shaft.
Large bearings provided with threaded holes
in one of the ring side faces can accommodate
eye bolts. Because the size and depth of the hole
is limited by the ring thickness, these holes are
designed to accommodate only the weight of the
bearing.
Make sure that the eye bolts are only subjected
to load in the direction of the shank axis
(† fig. 9).
Fig. 8
CAUTION: Never place any additional compon-
ents on the bearing prior to lifting.

When mounting a solid, large housing over a


bearing that is already in position on a shaft, it
is advisable to provide three-point suspension
for the housing, with one of the slings adjust-
able. This facilitates the process of aligning the
housing bore with the bearing outside diameter.

Fig. 9

50

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