Protection casing of bearing inner and outer ring processing chuck

The utility model discloses a protection casing of bearing inner and outer ring processing chuck, including the protection casing body, the protection casing body is cylindric structure telescopic connection's first stack shell and second stack shell to and with first stack shell fixed connection connect the bits bobbin base, first stack shell is fitted with a contraceptive ring and is establisheda set of first jack group, first jack group is including a set of top -down's first jack, the second stack shell is fitted with a contraceptive ring and is established the second jack that a set of and first jack group corresponds, arbitrary first jack passed through bolt connection during the second jack was organized rather than the first jack that corresponds, it is the ring structure to connect the bits bobbin base, connects the inboard upwards extension of bits bobbin base to form the inner tube, sets up the protection casing processing mouth that supplies the cutter business turn over on the protection casing b