Tsubaki Products

Technical Data Reducers Gear Reducer for Servo Motors TERVO Handling

This section contains general information regarding the handling of the TERVO HMTK, GMTK, SWJMK, SWMK, EWJMK, and EWMK Series.

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

Mounting

・HMTK、GMTK、SWJMK、EWJMK
Motors can be mounted horizontally, vertically, or on an incline. There are no restrictions on mounting direction.
・SWMK、EWMK
For the 80- and 100-size reducers, horizontal is the standard mounting direction. For other mounting directions, please consult with Tsubaki when placing the order.

(1)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.
(2)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.
(3)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.
(4)During coupling, be sure not to forcefully hit the output shaft, coupling, pulley, or sprocket. Doing so may damage the output shaft bearing.

(1)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.
(2)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.
(3)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.
(4)During coupling, be sure not to forcefully hit the output shaft, coupling, pulley, or sprocket. Doing so may damage the output shaft bearing.

(1)When attaching the motor to the machine, use a tap of the case.
(2)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.
(3)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.
(4)During coupling, be sure not to forcefully hit the output shaft, coupling, pulley, or sprocket. Doing so may damage the output shaft bearing.

(1)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.
(2)When installing to the driven shaft, apply molybdenum disulfide grease to the driven shaft surface and hollow output shaft internal diameter before inserting.
(3)Use the jig shown on the right for smooth insertion.

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.

(1)Mount the torque arm on the driven machine side of the reducer. Mount using a hex bolt.
(2)Ensure that the torque arm stopper is free to move between the reducer and the driven shaft. Never fix the torque arm in place with a stopper bolt. If there is no clearance, the bearing in the reducer will get damaged.
(3)When the start frequency is high, when repeated forward and reverse operations are being performed, and in similar situations, attaching rubber bush between the torque arm and the stopper bolt (or the spacer) will alleviate shocks.

(1)Remove the driven shaft from the hollow shaft while making sure that excessive force is not applied between the housing and hollow output shaft.
(2)Use the jig shown on the right for smooth removal.