tapered shaft fittings

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johnh
Posts: 112
Joined: Sun Jul 20, 2008 1:38 pm
Location: poitou-charentes, france

tapered shaft fittings

Post by johnh » Sun Mar 31, 2013 8:14 pm

Hi Guys,

anybody know where i can get a tapered bore pulley or sprocket or adaptor from? specifically 17.4mm 1:8 taper.
it seems to be a common shaft size for hydraulic pumps/motors but i can't find anywhere on that there internet where i can buy anything that goes on the end of one of those shafts.
it's ultimately to run a chainsaw from a hydraulic motor.

thanks,

John.

johnh
Posts: 112
Joined: Sun Jul 20, 2008 1:38 pm
Location: poitou-charentes, france

RE: tapered shaft fittings

Post by johnh » Thu Apr 04, 2013 5:41 pm

i suppose i'll have to take the shaft out and get it turned down straight. no wonder those hydraulic motors were such a bargain!

John_Allen
Posts: 1894
Joined: Sat Dec 31, 2005 3:59 pm
Location: Cumbria UK

RE: tapered shaft fittings

Post by John_Allen » Thu Apr 04, 2013 6:24 pm

eBay may be your friend - or a quick search with your favourite search engine!

Here's a selection from eBay's UK listings:

http://www.ebay.co.uk/sch/i.html?_nkw=t ... &_from=R40

Perhaps a message to one of the sellers may help you find the exact thing you need!

User avatar
denbute
Posts: 363
Joined: Mon Feb 09, 2009 8:55 pm
Location: Breendonk. Belgium.

RE: tapered shaft fittings

Post by denbute » Thu Apr 04, 2013 8:13 pm

The pullyes John mentiones are used with what is known as a taper bush or taper lock to fit them onto a cilindrical shaft with keyway. These cannot be used to fit pullyes onto a tapered shaft!

Go to a local power transmission shop that supplies belts/pullyes/chains/sprockets/bearings/seals. Most of them will have predrilled pullyes that can be finished to the desired bore.
They most likely will have an inhouse machinist or a machineshop that does some work for them. That's the kind of people you're looking for.
<b>1964 David Brown 880 Implematic sn: 880C357040 4 cylinder
197? David Brown 1210 sn: 1210/1/728679
1978 David Brown 996 sn: 995/6/11083514

John_Allen
Posts: 1894
Joined: Sat Dec 31, 2005 3:59 pm
Location: Cumbria UK

RE: tapered shaft fittings

Post by John_Allen » Thu Apr 04, 2013 8:55 pm

Denbute is right of course, I should have remembered as one of the fitters I worked with occasionally turned pulleys as denbute describes: I ordered and supplied the plain pulleys for him.

johnh
Posts: 112
Joined: Sun Jul 20, 2008 1:38 pm
Location: poitou-charentes, france

RE: tapered shaft fittings

Post by johnh » Thu Apr 04, 2013 9:09 pm

yes, i've thought about the possibility that a taper lock pulley would fit but unfortunately even the smallest taper lock pulleys, 1008 i think, are too big and i have not even been able to find out what the taper is on them just out of interest. thanks anyway though lads for your input.

a machine shop it will have to be.

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