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Oct 28, 2014 - 10:02PM

Removing head bearing cups

Just about to send my M21 frame off to the powdercoaters but the bearing cups are still in the headstock.

The cups appear to be threaded rather than the expected push fit, can anyone tell me please how they come out?

Thanks

Gary.

email (option): gj.owen@hotmail.co.uk

Ian Wright

Oct 28, 2014 - 10:10PM

Re: Removing head bearing cups

There is a special tool for removal of the cups...It's basically just a bar with a thread machined on the end...

This screws into the thread in the cup, a bar/punch is then inserted from the opposite end of the headstock and the cup and tool are driven out with a hammer...

If you don't want to reuse the cups you can run a line of arc weld around the inside of the cup...As it cools it will shrink the cup and it will fall out..

Alternatively weld a short length of metal across the cup and use the punch and hammer from the other end...

Personally I no longer use cups and cones but fit the sealed ball bearing kit instead...Ian

email (option): ian@wright52.plus.com

Jeff Bandola

Oct 29, 2014 - 1:07AM

Re: Removing head bearing cups

Robb Nortier, who posts here often, sells a threaded plug to remove the race as Ian describes. Contact him at britool51@hotmail.com.

Jeff Bandola

email (option): jjbandoo@aol.com

Gary Owen

Oct 29, 2014 - 10:57AM

Re: Removing head bearing cups

Ian Wright

Thanks Ian, the sealed kit sounds ideal - where can I get them from please?
Gary.

email (option): gj.owen@hotmail.co.uk

Gary Owen

Oct 29, 2014 - 10:58AM

Re: Removing head bearing cups

Jeff Bandola

Robb Nortier, who posts here often, sells a threaded plug to remove the race as Ian describes. Contact him at britool51@hotmail.com.

Jeff Bandola

Thanks Jeff, I've emailed Rob and told him you referred me.

Gary.

email (option): gj.owen@hotmail.co.uk

Gerrit Bruggink

Oct 29, 2014 - 5:29PM

Re: Removing head bearing cups

Ian, hallo.

Fit the sealed ball bearing kit instead.

type???

best Gerrit

email (option): info@thb-support.nl

Ian Wright

Oct 29, 2014 - 6:52PM

Re: Removing head bearing cups

I can supply the kit...I'm out of stock at the moment but will get some if a few people want them...Ian

email (option): ian@wright52.plus.com

Gary Owen

Oct 29, 2014 - 8:32PM

Re: Removing head bearing cups

Ian Wright

I can supply the kit...I'm out of stock at the moment but will get some if a few people want them...Ian

How much Please Ian?

Gary.

email (option): gj.owen@hotmail.co.uk

Gary Owen

Oct 30, 2014 - 9:32AM

Re: Removing head bearing cups

Gary Owen

Jeff Bandola

Robb Nortier, who posts here often, sells a threaded plug to remove the race as Ian describes. Contact him at britool51@hotmail.com.

Jeff Bandola

Thanks Jeff, I've emailed Rob and told him you referred me.

Gary.

Robb got back to me and said Ron Pier can supply, does anyone know how I can contact him? I tried a Google search without success.
Gary.

email (option): gj.owen@hotmail.co.uk

Ron Pier

Oct 30, 2014 - 10:40AM

Re: Removing head bearing cups

I'm easy to find Gary! I'm on here every day!
But I sold the last one of those tools, maybe a year ago. I did tell Robb!! Best I can offer is loan you mine. But you don't need it if you are replacing the bearings....as Ian explained. Ron

email (option): ronpier@talk21.com

Robb @ British Tool

Oct 30, 2014 - 4:05PM

Re: Removing head bearing cups/Gary & Ron

Hi Guys,

I can send you a batch of what ever you need. I no longer have the clutch spring compressors though.

Please let me know what is most useful. I can fit about 2 kilos into a flat rate box.

Cheers,

Robb

email (option): britool51@hotmail.com