REVISION AND REVAMPING OF BACK-UP ROLLERS AND CASSETTES


REVISION AND REVAMPING OF
BACK-UP ROLLERS AND CASSETTES

The correct maintenance in the bank of the leveler machine


is vital for the lifetime of the parts and their wear,
in addition to the quality of the material that is processed without fails.
In the leveler, which is the heart of the cross-cutting lines,
both leveling work rolls, and intermediate rolls and back-up bearings
must fulfill the highest standard of reliability:
the choice of  poor and/or second best material
will lead to achieve worse results than market expectations.


REVISION AND REVAMPING OF BACK-UP ROLLERS AND CASSETTES


BACK-UP ROLLS USURY



Back-up rollers projected in accordance with best practice (type of material, hardness, failure and yield of material itself) lead to increase the lifetime of a leveler bank. 

In order to obtain a perfectly precise surface and high precision, the banks should be checked, revamped or replaced every 6/7 months.

C.R. offers, in agreement with its customers, the possibility to re-use the back-up rollers that have already worked, by means of a procedure of revision and revamping of the back-up rollers and the whole cassette. 

After a careful check of wear conditions, C.R. plans the operations for the revision of the back-up bearing, which is taken back to its normal working condition. 

C.R. generally re-grinds the outer shell, and in specific cases, the roller and the side seals are replaced as well. 

The back-up bearings are then re-lubricated, assembled and tested.