technical data Reducer Small Gear Motor Handling

This section describes general handling of Gear Motor, Hypoid Motor, and Croise Motor.

For details, please refer to Instruction Manuals attached to the product.

Torque arm design

When using a standard torque arm or designing and manufacturing your own torque arm, please check the strength of each element as follows:

1. Check the torque arm and fixing bolts

Check using torque arm reaction force R.

R = T + W × G C

2. Bearing selection

Check bearing reaction forces A and B.

A (bearing a) = L1 × (R - W) - D × R L2

B(bearing b) = (L1 + L2) × (R - W) - D × R L2

  • T: Output torque N・m{kgf・m}
  • W: Weight of reducer kg{kgf}
  • R: Torque arm reaction force kg {kgf}
  • G: Distance between the center of the driven shaft and the center of gravity of the reducer m
  • C: Distance between the driven shaft center and the anti-rotation stopper m
  • D: Distance between the center of the reducer and the anti-rotation stopper m
  • L1: Distance m between the center of the reducer and bearing b
  • L2: Distance between bearing a and bearing b m

*The output torque is + when rotating in the direction shown on the left, and - when rotating in the opposite direction.

Dimensions when using optional torque arm (approximate values)

Also applicable to adapter-equipped and double-shaft types.
Model number G
HMTA010-30H5~35H1200
HMTA020-30H5~200
HMTA020-45H600~1200
HMTA040-55H600~1200
0.10m
HMTA020-35H300~480
HMTA040-30H5~35H200
HMTR221-45H5~55H120
0.12m
HMTR075-35H5~55H480
HMTR151-55H100~200
0.13m
HMTA040-45H300~480
HMTR151-45H5~80
HMTR370-55H5~60FI
0.15m
HMTR550-55H5~40FI 0.26m
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