Planetary Ring Gear Stress & is Aluminum OK?
Planetary Ring Gear Stress & is Aluminum OK?
(OP)
How do I calculate the stress on ring gear? I know stress on planets and sun gear.
I want to find out if 7075-T6 will work for ring gear?
This is an extremely slow application and very low life is needed (a few hours at rated torque)
I want to find out if 7075-T6 will work for ring gear?
This is an extremely slow application and very low life is needed (a few hours at rated torque)





RE: Planetary Ring Gear Stress & is Aluminum OK?
the stresses in the ring internal gear are lower than
those at the planet gears.
As you know, FEA can always be applied to calculate
the stresses if you don't have other tools.
RE: Planetary Ring Gear Stress & is Aluminum OK?
aluminum vs steel is 65 percent
of that for steel. You might see
more wear from the aluminum gear
as it tends to eat or wear the
steel at a quicker rate than steel
on steel. The Y factor for an internal
gear is approx. .54 and for the
smaller external planets probably
around .36. This may be more than
you wanted to know.
RE: Planetary Ring Gear Stress & is Aluminum OK?
Thanks!
RE: Planetary Ring Gear Stress & is Aluminum OK?
Aluminum is not generally recognized as an acceptable gear material because it does not do well with sliding contact. However, since your life requirement is short, you may be o.k.
RE: Planetary Ring Gear Stress & is Aluminum OK?