Jacobs Taper Drill Chuck Arbor:
The main Shafts is of integrated type, which is much more superior than the traditional design. The major feature are as follow:
Extremely rigid construction. Accuracy is same as page C66
The accumulative tolerances can be reduced to a minimum, since the traditional mechanism requiring an ARBOR to to connect the Drill chucks which will generate the accumulative tolerances.
The integrated type Keyless Drill Chuck is designed to solve this problem totally.
Prevent the Drill Chucks from falling out.
Extremely safe in operation.