how can I calculate the efficiency of worm gear system?
how can I calculate the efficiency of worm gear system?
(OP)
Hi all
I want to select a motor for a worm gear system with 1:104 ratio.I know that the output torque is 208 N.M
for calculating the input torque I know that I must use this formula:
Tin=Tout/reduction ratio/efficiency
so
Tin=208/104/efficiency
but I don't know how can I find the value of the effieciency of my worm gear system.
thanks to eny one could help me
I want to select a motor for a worm gear system with 1:104 ratio.I know that the output torque is 208 N.M
for calculating the input torque I know that I must use this formula:
Tin=Tout/reduction ratio/efficiency
so
Tin=208/104/efficiency
but I don't know how can I find the value of the effieciency of my worm gear system.
thanks to eny one could help me





RE: how can I calculate the efficiency of worm gear system?
Your machine design textbook from college should have a good explanation of the forces on a worm gear system.
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JHG
RE: how can I calculate the efficiency of worm gear system?
http://www.roymech.co.uk/Useful_Tables/Drive/Worm_...
Mechatronics Engineer from South Africa.
RE: how can I calculate the efficiency of worm gear system?
Your question should be more specific. First, high ratio worm gear drives typically have fairly low input-to-output efficiency, and this efficiency can vary greatly depending upon the particular system design (ie. oil or grease lubrication, rolling element vs. plain bearings, etc.) and the operating conditions at which the efficiency is being measured. When sizing a motor, you need to take into account the increased torque needed at start up, and the gear drive system mechanical losses at the combined worst-case operating conditions.
Unfortunately, what you'll discover with the size of motor needed for your 104:1 worm gear drive once you take into account all of the worst-case conditions, is that the motor will be far larger than you imagined.
Best of luck to you.
Terry
RE: how can I calculate the efficiency of worm gear system?
Someone on this site quoted or made up a quick rule of thumb that a worm drive's efficiency was 100% minus the gear ratio. Obviously, this does not help the OP one bit.
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JHG
RE: how can I calculate the efficiency of worm gear system?
I guess the problem with free advice is that often it is only worth what you paid for it.
Terry
RE: how can I calculate the efficiency of worm gear system?