Where to get an Idler Pully for Poly-V Belt?

Where to get an Idler Pully for Poly-V Belt?

Author
Discussion

Swiss_Toni

Original Poster:

412 posts

183 months

Tuesday 30th December 2014
quotequote all
Might anyone have a good source for an Idler Pulley for Poly-V Belt (multi-grooved)?

It needs to be high quality, preferable aluminium with a high quality bearing. If that's not possible a stock one (anyone have a new one kicking around from crate engine?).

One of my other idlers blew up (bearing failure) and want to change the remaining one to make sure I don't have a problem with it.


Storer

5,024 posts

215 months

Tuesday 30th December 2014
quotequote all
Hi Tony.

Can you remind me what engine you are running?

That does not look a very good design. The flat metal bracket will brace in a straight down load but as the revs rise and fall there will be stress in the unsupported directions taking the pulley out of line and 'loading' the bearing.


Paul

ROWDYRENAULT

1,270 posts

214 months

Wednesday 31st December 2014
quotequote all
Toni: How many goves on the belt and diameter of the pulley. I may have one on the shelf ifs its correct you can have it for the freight. Lee

Swiss_Toni

Original Poster:

412 posts

183 months

Wednesday 7th January 2015
quotequote all
Thanks very much Lee, that is a very kind offer.

I got the old one off today. I been concentrating on removing the gearbox to do a rear main seal that is weeping ever so slightly (as fellow aviation colleague, you know if it's not 100% right you've got to fix it).

I'm going to take it my machinist to see what he'll charge to make a custom aluminum one up. He did a beautiful job on the other pulley I needed.

I'll look at him doing new aluminum mount as well as the old one is functional rather than pretty and is fairly heavy for what it is.

If I still need a stock one I'll be in touch (mine has 6 grooves).

Greg

Swiss_Toni

Original Poster:

412 posts

183 months

Friday 16th January 2015
quotequote all
Ended up getting one made up. It wasn't cheap by a long stretch but it's 1000 times better.

Before

Plastic stock pulley, with a single row ball bearing and a frankly shocking bracket eek (the weld wasn't even complete!). Paul was spot on with that.



After

Machined aluminium pulley, double row ball bearing and a 6082 T6 machined and TIG welded bracket.


Storer

5,024 posts

215 months

Friday 16th January 2015
quotequote all
That looks much better and stronger.

If I need a belt I usually measure what length I need and then call a local bearing factor. Most of them seem to do belts, pullies and bearings.


Paul