Is there ever a case where using annealed 4140 without heat treatment (185-225 BHN) would work for the pinion of a gear set if the stresses are low enough? (12 ksi beam stress, 42 ksi contact, 60 rpm, 2 inch pitch Ø)
I'm wondering if anyone has experience with using 8620 (carburized or not)as a worm gear material. I know that the worm itself is usually made from steel but can the gear be made from something other than ductile iron or bronze?
I'm wondering if worm gears are ever used to produce translation rather than rotation. In other words, can the teeth that would normally be hobbed onto a wheel be cut onto the length of a shaft.
