coefficients of friction for cast iron wheel and hardened steel worm

[windell747]

Aloha,

I'm performing a worm gear efficiency calculation and I am trying to locate STATIC coefficients of friction and coefficients of friction at different sliding speeds for a cast iron wheel and hardened steel worm.

I've been looking all over and I can't seem to find what im looking for. Can any of you help me out?

Mahalo Nui Loa

 

[plasgears]

Are you sure you want that combination? Worm gear sets benefit from one of the elements having flexibility and low friction properties. I have used hardened steel worm against bronze and nylon plastic worm against acetal gear. These are opposites, but they work.

 

[sacem1]

I do not have the data you requiere but do have two different worm gear speed reducers and gear manufacturers that list the power capability of a stablished set of worm and wheel in stel/cast iron as HALF the power of the same combination on steel/bronze, maybe that will help.

Cheers

SACEM1