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What is the difference between a lubricant and a friction modifier?

April 26, 2017difference friction lubricant modifier

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What is the difference between a lubricant and a friction modifier?

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10 Posted

A. A lubricant is designed to reduce the coefficient of friction on the gage face of the rail and the wheel flange. On the other hand, a friction modifier is designed to control top of rail friction at an optimum level (0.3-0.35) in a manner that will not affect braking or traction. Friction modifiers can solve a more wide range of problems such as noise, rail & wheel wear, fuel consumption & green house gas emissions, lateral forces, and short pitch corrugations.