Mill bearing life, not only with the quality of bearings, and its installation closely related to the usage. To this end should pay attention to the bearing installation requirements, and comply with the relevant operating procedures.
A pre-installation preparation
(1) prior to installation to respond to each with cooperation, including the roll neck bearing housing, bearing rings and bearing cover plate with the surface to be carefully examined to check its size and shape of the location accuracy and with the public to cover compliance with the design of technology requirements .
(2) The bearing to match the surface of the roll neck bearing box hole and the hole edges and burrs must be removed and cleaned coated with lubricant.
2, the installation of four cylindrical roller bearings
(1) install the labyrinth (Waterproof Case)
Labyrinth ring and roll neck with generally tight moving with required copper rod knock gently into the installation. The labyrinth surface must be parallel and close fit with the shaft shoulder and bearing inner ring.
(2) Installation of inner
four cylindrical AIDS bearing inner ring and roll neck with the interference fit, the inner ring should be installed first heated to 90-100 ° C. Do not exceed 120 ° C; to prevent retraction of the inner cooling is not complete. Heating method can be used tank heating induction heating available, absolutely prohibit the use of open flame heating.
A large number of the inner diameter of the increase in tank heating by the following formula:
△ d = 12.5 × 10-6 △ TD
Where: △ d - inner ring inner diameter heated by a large number (mm)
△ t - the difference between oil temperature and room temperature (° C), at room temperature standard of 20 ℃.
d - Inner diameter (mm)
Installation such as FCD type double inner ring, along the axial direction in the cooling process in the inner end of the inner ring and inner ring, inner ring and labyrinth rely stickers, and tested with a feeler.