Tool identification

[Paul RadfordParticipant @paulradford79614]

<p style=”text-align: left;”>Morning.
I’ve just purchased some used tooling and there’s one item that I can’t identify! I’ll attach photos below and would appreciate any help in finding out what this is please?
Thanks Paul</p>

[David JuppParticipant @davidjupp51506]

I think that is a roller burnishing tool, for finishing a hole or bore.

[Andrew CrowParticipant @andrewcrow91475]

It looks a bit like a tube expander, but as its obviously machine driven it could be for burnishing a bored hole???

Andy

[noel shelleyParticipant @noelshelley55608]

Never seen one before but roller burnishing tool ls my guess by the adjustment. Doesn’t look like a tube expander – to well made. Noel.

[peak4Participant @peak4]

Have a look here
https://cogsdill.co.uk/products/burnishing-tools/roll-a-finish/

Bill

[Nigel Graham 2Participant @nigelgraham2]

Morwe to the point than the remark about quality, a tube-expander is not likely to have a taper shank unless for forming tubes before fitting them to whatever is intended. Also the rollers seem parallel, not tapered, so not an expander for heat-exchangers.

[Martin ConnellyParticipant @martinconnelly55370]

Bought some tube expanders at work and they had angled rollers to pull the expander body’s lip up to the edge of the tube. They also had a separate taper pin with a square drive on the end that was pulled in by the angle to expand the rollers outwards. Reversing the direction the taper pin was being turned loosened it all off.

Martin C

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