Fobco Star 1/2" bench drill

I should be grateful for advice on removal of jacobs chuck from Fobco Star 1/2" bench drill, there is excessive run out which i hope is in the chuck.

There is no provision for driving a taper through the quill, so I assume it is not a Morse Taper.

It could be a threaded or jacobs taper, how do i find which it is?

When identified, what is the correct course of action?

David

Hi David

You should find a threaded collar behind the chuck, with tommy bar holes in it.

Chuch is removed by holding the chuck stationary and screwing the collar down to force it off of the taper.

That is how my two drills are arranged.

Regards

Ian

David

Assuming all Fobco Stars are similar, my chuck is held on solely by the taper (Jarno-ish?). It has removed itself a couple of times due to drilling forces, so, maybe a judicious tap, thump or similar with a Birmingham screwdriver may well suffice. Probably the 'professional' method would be opposing wedges in the space above the chuck?

Rgds

Bill

David

The best way is to use these :- http://www.arceurotrade.co.uk/Catalogue/Chucks/Wedges-Drifts

Cheers

Norman

David,

I had the same issue, but I think I zoinked the bearings when I disassembled it! Although a new chuck improved things signifiantly.

The best way is as the guys note, with the Wedges. I found that a couple of flat plates held above the wedges gave me plenty of space to get the leverage working. I used a G-lamp to slowly apply force.

Remember to put something to catch it in underneath or it will drop on your foot like mine did!

Rob

Thanks for the advice Ian, Bill, Norman, and Rob.

I found that I needed to loosen the socket cap screw in the collar around the bottom of the quill, and drive this collar up the quill away from the chuck by about 1”. This revealed the threaded collar, which as Ian correctly recommended simply unscrewed to force the chuck off the taper.

David

Fobco provided a 'screw down collar' on the Fobco Star drill to facilitate chuck removal. Please don't attack this precision tool with hammers as this will not do the bearings any good. The chuck (Jacobs 34-06 or equivalent) is fitted to a Jacobs JT6 taper at the bottom of the quill shaft. To remove the chuck lower the chuck etc by about 2" and clamp it with the side lever. Remove the depth stop stud. Loosen the collar (7/32" AF hex key) which attaches to the depth stop and then wiggle it up to reveal the collar which is just above the chuck. The collar is knurled and has a couple of holes in it for a 'C' spanner. If you do not have a 'C' spanner which fits protect the collar with a strip of soft metal (I used an old copper pipe clip) and attach a mole grip. Insert a 5/16" bar into one of the chuck key holes (If older chucks are opened up the bar will go right in - new ones are not drilled thro' and then screw the collar down against the chuck - having first put something soft under the chuck for it to land on !!

Could anyone please tell me the name, or code for, the correct cream paint colour used on most Fobcos?

Any ideas about where to obtain it?

Thanks very much, Martin. Can you please help further with the name or number of the cream paint which I should order from Craftmaster?

Al best, Patrick

This is the cream taken off craftmasters website I think it is a good match

If in doubt contact [email protected] and they will match any color you want

Best Wishes Martin

Edited By Martin Walsh 1 on 19/03/2014 20:38:20

Thank you very much, Martin. That colour looks good to me and I'll pursue it with Craftmaster.

I've just made the happy discovery that Craftmaster are in Over, Cambs, no more than about 5 miles north of my home in Elsworth. So I'll drive over and see them!

Present paint colour is a horrible bilious green, quite unworthy of this fine machine and crudely applied.

best wishes, Patrick