flat belt source

[skipd1]

I need a replacement belt for my KO Lee Cutter grinder. The one I have is getting very worn and need to replace it. I checked with McMaster but the one I got from them (orange) is too flexable and the motor torque really flexes and jumps off the flat pulleys easily.

[Bented]

Travel back to 1945, they will have what you seek.

If your time machine will not travel that far then deal with what you have in 2022.

[reggie_obe]

Baltimore Belting

http://baltimorebelting.com/

[J Tiers]

You got the wrong stuff. You probably want the Buna-N with nylon core. Or the old leather type, which McM also has.

I do not know what the surface is like for that Buna-N belting. For polished pulleys, you want the shiny and almost sticky surface type. Or leather, hair side in. The belting I have on the Logan has the shiny surface, and grips well, like a barely damp hand on a shiny pole.

[RB140]

Why not use a gear tooth belt or sometimes called a timing belt I'm sure with your talent you could machine the drive wheels for the belt then you would not have to worry about slippage
It is just a thought

[Mr Fixit]

I have a lathe that used a flat belt and upgraded to the "future" with out a time machine as Bented suggested and it works fantastic. The one thing that I did was turn it inside out and then did not have to worry about cogs or grooves in the pulleys since the flat side grips really well.

Just another suggestion that works for me.

TX
Mr fixit for the family
Chris

[old mart]

Flat belts must be used with crowned pulleys, Machinists Handbook gives dimensions. Your motor needs to be looked at, it should not jump and flex.
There must be lots of sources of flat belts in the USA, in the UK, I have bought from Lathes UK.

[metalmagpie]

My KO Lee S612 used round belts. I don't know what my S618H uses, kind of grateful for that. Are you positive you need a flat belt?

[The Metal Butcher]

Flat belts must be used with crowned pulleys, Machinists Handbook gives dimensions. Your motor needs to be looked at, it should not jump and flex.
There must be lots of sources of flat belts in the USA, in the UK, I have bought from Lathes UK.

That orange stuff stretches, slips, and falls off. I've got some too.