Dismounting

âž” fig ).

2

âž” fig ). In other caseswhere there is enough space behind the ring, a strong back puller such as the SKFTMBSseries can be used ( âž” page 46 ).Small bearings can be dismountedusing a mounting dolly or a length of tubing applied to the outer ring. For larger bearings with an interference fit, a mechanical or hydraulic press can be used where possible.It is also possible to dismount bear-ings from housing bores by quickly heating the bearing housing without heating the bearing outer ring to any extent. âž” fig ). In order todo this it is necessary to provide the necessary oil ducts and distributor grooves when designing the bearing arrangement (

Spherical plain bearings

For large bearings with an interfer-ence fit,dismounting is considerably facilitated if the SKF oil injection method is used (

Rod ends

If the bearings are to be re-used afterdismounting, the same care and atten- tion are required as when mounting. The requisite withdrawal force should always be applied to the ring which is to be dismounted.SKFoffers a range of different pullertypes to accommodate many applica- tions. If the shaft is pre-machined to accommodate the arms of a jaw puller, then a two- or three-armed puller can be used( To dismount rod ends the lock nut se- curing the shank should be loosened and, if possible, the rod end be un- screwed from its rod or tube. The rod end can then be removed from the pin in the same way as a bearing, e.g. using a puller.
3 1 2 Dismounting a bearing using the SKF oilinjection method Removing a bearing with a jawpullerAstrong back puller facilitatesdismounting of the inner ring Fig 1 Fig 2 Fig 3 55