Inspection and Repair of Housing Bore

The wear of bearing hole will cause gear axis shifting and not parallel, will destroy the relationship between the gearbox differential housing and each bearing, directly impact on the relative position of the transmission input and output shafts, affecting the normal work of gears, resulting in a series of failures such as the gear sound and skipping gears.

The match value of bearing and housing bore is generally between 0.002 ~ 0 041 mm; the repair allows the value of 0.006 ~ 0 047 mm; and the limit value should no more than 0. 10 mm. When the gap exceeds the limit, it should be repaired.

According to the actual wear conditions, you should choose the different repair approaches. If the seat hole not lose a round hole, but only in a loose matching, you can repair by coating or chrome the bearing and housing bore. If the seat hole loses a round hole, it should be repaired through bushing method. When in bushing process, boring the original seat hole into a perfect circle using specific tools, and then insert into the new sets. After inserting the new set, the dimensional accuracy of the housing bore should be ensured.