Technical Data  Reducers  Small-Size Gear Motor  Handling

This section describes general use of gear motors, hypoid motors, and croise motors.

For more information, see the instruction manual provided with the product.

Mounting

1. Mounting Direction

  • ・Gear motors, hypoid motors, mini series

    Motors can be mounted horizontally, vertically, or on an incline. There are no restrictions on mounting direction.

  • ・Croise Motor
    • CSMA/CSMR Series

      There are no restrictions on the mounting direction for reducer frame numbers 13 to 28. They can be mounted horizontally, vertically, or on an incline.
      Horizontal mounting is the standard installation for reducer frame numbers 32 to 50. For other mounting directions, please consult with Tsubaki when placing the order.

    • HCMA/HCMR Series

      Horizontal mounting is standard. For other mounting directions, please consult with Tsubaki when placing the order.

Mounting

1. Foot Mount Type

  • ・Use a strong flat surface that is not susceptible to vibration during operation. Remove any dust and foreign matter on the mounting surface before attaching the four bolts.
  • ・When coupling the reducer, make sure the shaft is precisely centered. If it is not, this will shorten the life of the bearing, gear, and shaft, and cause noise and vibration.
  • ・Center the chain and belt precisely and adjust the tension so that the load applied to the output shaft does not exceed the specified value.
  • ・During coupling, be sure not to forcefully hit the output shaft, coupling, pulley, or sprocket. Doing so may damage the output shaft bearing.

2. Flange mounting

  • ・Use a strong flat flange mounting plate that is not susceptible to vibration during operation. Remove any dust and foreign matter on the mounting surface before attaching the four bolts.
  • ・When coupling the reducer, make sure the shaft is precisely centered. If it is not, this will shorten the life of the bearing, gear, and shaft, and cause noise and vibration.
  • ・Center the chain and belt precisely and adjust the tension so that the load applied to the output shaft does not exceed the specified value.
  • ・During coupling, be sure not to forcefully hit the output shaft, coupling, pulley, or sprocket. Doing so may damage the output shaft bearing.

3. Face Mount Type

  • ・When attaching the motor to the machine, use a tap of the case.
  • ・When coupling the reducer, make sure the shaft is precisely centered. If it is not, this will shorten the life of the bearing, gear, and shaft, and cause noise and vibration.
  • ・Center the chain and belt precisely and adjust the tension so that the load applied to the output shaft does not exceed the specified value.
  • ・During coupling, be sure not to forcefully hit the output shaft, coupling, pulley, or sprocket. Doing so may damage the output shaft bearing.

4. Hollow Shaft Type

4-1. Mounting to the driven shaft

  • ・The internal diameter of the hollow shaft is manufactured to JIS H8 tolerance. For normal applications, the finish of the driven shaft should be h7. For applications involving large shock or radial load, use a slightly tighter fit of js6 or k6.
  • ・When installing to the driven shaft, apply molybdenum disulfide grease to the driven shaft surface and hollow output shaft internal diameter before inserting.
  • ・Use the jig shown on the right for smooth insertion.
Mounting to the driven shaft

4-2. Fixing to the driven shaft

A. When there are steps on the driven shaft

Fabricate the end plate as shown in the figure below. Fix the hollow output shaft and driven shaft.

B. When there are no steps on the driven shaft

There are the following two types of fixing methods.

Fixing to the driven shaft

4-3. Preventing the torque arm from rotating

・Mount the torque arm to the driven-machine side of the hypoid motor. Mount using a hex bolt.

Provide sufficient clearance for the rotation stopper of the torque arm between the hypoid motor and the driven shaft. Do not fix the torque arm with a rotationpreventing bolt. If there is no clearance, the bearing in the reducer will get damaged.

When the motor is started and stopped frequently or when it is repeatedly run forward and then reversed, install a rubber bush between the torque arm and the rotation-preventing bolt (or spacer) to reduce shock.

Preventing the torque arm from rotating

4-4. Removal from the driven shaft

  • ・Remove the driven shaft from the hollow shaft while making sure that excessive force is not applied between the housing and hollow output shaft.
  • ・Use the jig shown on the right for smooth removal.
Preventing the torque arm from rotating

Recommended plate dimensions (HMMT・HMTA・HMTR・Croise Motor )

Products
(frame number example )		 Output hollow shaft hole diameter Plate Stopring size
ΦD T Z
HMMT40 Φ18 17.5 8 M8 C18
HMTA‐Frame 20 Φ20 19.5 6 M8 C20
HMMT60・90 Φ22 21.5 8 M8 C22
CSMA‐Frame 16 Φ25 24.5 9 M10 C25
HMTA‐Frame 30
CSMA-Frame 22 		Φ30 29.5 9 M12 C30
HMTA-Frame 35 Φ35 34.5 12 M12 C35
CSMA‐Frame 28 Φ40 39.6 12 M12 C40
HMTA-Frame 45 Φ45 44.5 15 M16 C45
CSMA-Frame 32 Φ50 49.5 12 M16 C50
HMTA-Frame 55 Φ55 54.5 18 M18 C55
CSMA-Frame 40 Φ70 69.5 14 M24 C70
Recommended plate dimensions