Friction factor
Friction factor
(OP)
Hello to everybody,
I'm looking forward materials which have a friction factor of about 0.2 (lubricated) and the higher hardness.
Does it make sense to search such marterial?
In advance thanks!
JamesXIII
I'm looking forward materials which have a friction factor of about 0.2 (lubricated) and the higher hardness.
Does it make sense to search such marterial?
In advance thanks!
JamesXIII
Electro-mechanical designer





RE: Friction factor
you want to use? Also the typical hardness?
RE: Friction factor
The hardness would be around 50HRC, I wanted to use steel but the steel-steel friction factor is about 0.1. Do you have any idea of material pair which will have a friction factor of 0.2 with lubrication
Electro-mechanical designer
RE: Friction factor
Roughening the contacting surfaces can raise it up to 0.25 / 0.3 (but you have to check if there aren't any drawbacks...)
RE: Friction factor
RE: Friction factor
for what it is worth, Machinerys Handbook 25th Ed. p.190 Table 2 "Coefficients of Static Friction for Various Material Combinations" shows sapphire on sapphire = 0.2 for dry and 0.2 for lubricated. Sapphire is hard so this meets your criteria. However, I think you will need to establish an allowance band or additional critera to arrive at anything meaningful.