- MOUNTING AND DISMOUNTING OF BEARINGS
- The fundamental prerequisite for the correct mounting and dismounting of bearings is
cleanliness of working site, tools, all components of bearing arrangement, lubricant and
bearings themselves. Any contamination from foreign matter will result in rapid
deterioration of the bearings.
- MOUNTING OF BEARINGS
- Prepare all the equipment, parts and the necessary tools before mounting. Ensure that
they are clean. Bearings are supplied in protective packages and should not be taken out
earlier than immediately before mounting so that they do not become dirty.
Rolling bearings can be mounted on the shaft either in cold or warm condition. While
large bearings are mounted by heating them in suitable mineral oil upto a temerpature of
70º to 90º C, small and medium size bearings can usually be driven on to the shaft in
cold condition with the use of suitable mounting tools and a press. The force applied for
pressing must not be transmitted through the rolling elements, the necessary jig must be
placed so that it bears upon that ring which is being driven on, and / or upon both rings
simultaneously.
- DISMOUNTING OF BEARINGS
- Dismounting of bearings must be simple and must not damage the bearings or adjacent
components. Small and medium size bearings can be dismounted by using a puller or other
suitable withdrawal tools.
- Large bearings generally require greater foresee for dismounting and oil injection
method is invariably used in such cases. Induction hearts and thermo withdrawal tools are
also used for dismounting of heavy interference inner rings of cylindrical roller
bearings.