Member • Jan 19, 2014

## Rack and Pinion System Design

I'm new here and I was wondering if anybody could help me. I need to design a rack and pinion gear train at work and I am having trouble finding specific information on these gear trains. I have all the gear stress formulas and factors, but my basic problem remains:

How do I calculate the torque required on the gear, if the required linear load is known?

I thought about using the torque formula (T=r x F) and using the pitch diameter as my moment arm (r). Somehow this feels too simple. Am I on the right track here?

Once I know what diameter gears I need to look at, the rest of my design will be (relatively) straightforward.