Tsubaki Products

Technical Data Reducers Worm Gear Reducers Handling

This section contains general information regarding the handling of the EWJ/EWJM(R)/EW/EWM(R), and SWJ/SWJM(R)/SW/SWM(R), and TD Series.

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

5. Connecting

All standard models are with right hand worm. Verify the rotational direction of the input and output shafts.

・Do not apply impact or excessive thrust loads to the shaft when installing pulleys, sprockets, or couplings to the reducer input/output shafts.
・Align accurately. Refer to pulley, sprocket, or coupling catalogs/manuals to ensure alignment accuracy
・Shaft eccentricity, and radial and axial loads that exceed allowable values may cause vibration or noise, possibly shortening gear, bearing, and shaft life.

・No need of couplings, all models come with hollow input shaft.
・Hollow input shafts are machined with bore and keyway size according to the specified motor size. Use the key supplied with the motor.
・Be careful with safety and follow the procedure below.

Steps	installation procedure	Notes
1	Place the reducer so that the motor can be mounted easily.	Be careful with safety during transportation.
2	Align the keyway phases of the motor shaft and the reducer input.	Be careful with safety during transportation. Align accurately to eliminate any shaft eccentricity.
3	Gently insert the motor output shaft into the reducer input shaft.	Apply grease to the motor output shaft and the reducer input shaft bore Grease ：Molybdenum Special (COSMO OIL)
4	Fully tighten the supplied hex bolts to the motor flange using the spring washers.	The bolts should be tightened after verifying the motor has entered the reducer properly Tighten with the torque required to the bolt size and its grade.

Note) Even with the same size reducer, motor flange diameters differ depending on the motor size. Similarly, the input bore and keyway are machined differently.
Note) When connecting the reducer and motor, be careful with safety and use the lifting hook on the motor.

・The coupling hub on the reducer side is set (key and set screw) when shipped. Make sure it has not loosened during transportation.
・Each coupling hub is machined with a bore diameter and keyway that matches the specified motor size.
*Alwyas install the provided collars to adjust the length of the motor shaft.

Note) Use the key and set screws supplied with the reducer when installing the coupling hub on the motor.
・Use the supplied inserts.
・Motor and flange mounting bolts and spring washers are also supplied. 。Refer to the table below.

Steps	installation procedure	Notes
1	Place the reducer so that the motor can be mounted easily.	Be careful with safety during transportation.
2	Apply a small amount of grease to the motor output shaft. Insert the input collar and then attach the Jaw-Flex coupling. Make sure to assemble with the key in place. Then, tighten the socket set screw.	Do not hit the coupling with a hammer or other object when inserting it. Be careful with safety during transportation.
3	Insert the Jaw-Flex coupling insert into the coupling on the reducer. Then assemble it keeping it aligned to the phase of the coupling.	Make sure the coupling on the motor side fits into the insert smoothly. Do not force it. When do not fit smoothly, realign the phases and the centers of the hub and the insert.
4	Fully tighten the supplied hex bolts to the motor flange using the spring washers.	The bolts should be tightened after verifying the motor has entered the reducer properly Tighten with the torque required to the bolt size and its grade.

Note) When connecting the reducer and motor, be careful with safety and use the lifting hook on the motor.