AC Motor Torque RPM

[Mandrill22]

I'm trying to figure out what the output died and torque of the motor below would be. I would think it's 6W x 30:1 great ratio at 60 RPM would be:
Torque (N.m) = P / [(2pi*RPM)/60] * Gear Ratio
= (6W / [2pi*60RPM/60]) * 30
= 28.5 NM

However, is the listed RPM the output RPM of the motor, or the RPM after the gearing?

Motor on Aliexpress

 

[waross]

Look at the specs for similar motors with different gear reductions.
It should be obvious.


Bill
--------------------
"Why not the best?"
Jimmy Carter

 

[7anoter4]

The rpm [in table] is the maximum after the gear[output].
The motor rpm rated is 1350 [1400].
The gear ratio is 1350/rpmoutput
As the speed varies from 10 to 100% it should be an open loop V/F control [constant power]
An effectivity factor[η] of 0.9-0.95 could be used[T=P/η/ω]
ω=2*π*f=2*π*rpmotor/60 [considering two poles motor].