- Joined
- Oct 30, 2019
- Messages
- 206
Hi all,
A year or three ago I fixed up a Bux magnetic drill press, with a Rockwell 77730 drill head on it. This has been fine, it doesn't get much use but is handy when it's the right tool for the job.
It is time to look at annular cutters, and fitting a weldon holder to this. As such, I wanted to figure out what the spindle type was here, to try and find a native weldon holder instead of something that might spin in the jacobs chuck.
However... I cannot figure out how to remove this Jacobs chuck from the spindle or what kind of mounting is involved
See pictures below, high-resolution versions available - I'll link them if I can't attach them directly
The picture looking down inside the chuck may show a hole down inside - when this unit came to me, at least - there was no fastener there. I have not established for sure whether that is a threaded hole. I did try the "allen wrench in chuck with hammer" approach to try and unthread this, but after a few spirited taps there are no signs it would unthread akin to chucks on handheld drills.
The spindle does not have a shoulder such that a wedge to unseat a jacobs taper is likely to be the answer -- that would drive the axial force straight into the bearings of the motor so I have not yet tried that.
The chuck is a Jacobs 37KD; unlike some other Jacobs chucks that would say like "JT3" on them, this has no such markings alongside its chuck capacity.
Insights/suggestions appreciated
A year or three ago I fixed up a Bux magnetic drill press, with a Rockwell 77730 drill head on it. This has been fine, it doesn't get much use but is handy when it's the right tool for the job.
It is time to look at annular cutters, and fitting a weldon holder to this. As such, I wanted to figure out what the spindle type was here, to try and find a native weldon holder instead of something that might spin in the jacobs chuck.
However... I cannot figure out how to remove this Jacobs chuck from the spindle or what kind of mounting is involved
See pictures below, high-resolution versions available - I'll link them if I can't attach them directly
The picture looking down inside the chuck may show a hole down inside - when this unit came to me, at least - there was no fastener there. I have not established for sure whether that is a threaded hole. I did try the "allen wrench in chuck with hammer" approach to try and unthread this, but after a few spirited taps there are no signs it would unthread akin to chucks on handheld drills.
The spindle does not have a shoulder such that a wedge to unseat a jacobs taper is likely to be the answer -- that would drive the axial force straight into the bearings of the motor so I have not yet tried that.
The chuck is a Jacobs 37KD; unlike some other Jacobs chucks that would say like "JT3" on them, this has no such markings alongside its chuck capacity.
Insights/suggestions appreciated