8
CAUTION
●
Confirm the rotation direction before connecting to the driven machine. Incorrect rotation direction
may cause personal injury or damage to the equipment.
●
Remove the key temporarily attached to the output shaft when the reducer operates alone; otherwise,
personal injury may occur.
●
Install appropriate guard devices around rotating parts ; otherwise, personal injury may result.
●
When connecting the product with a load, check that the alignment, belt tension and parallelism
of the pulleys are within the specified limits. When the unit is directly connected to other machinery,
check that the accuracy of direct connection is within the specified limits. When a belt is used to
connect the unit to other machinery, check the belt tension. Correctly tighten bolts on the pulley and
coupling before operation; otherwise, personal injury or damage to the equipment may result due to
debris scattering.
5-1 Installation of Coupling
・
When attaching a coupling, do not to apply impact force or excessive thrust to the shaft; otherwise, the bearing
may be damaged.
・
Shrink fit or shaft-end thread is recommended for mounting (Fig. 5-1).
(1) Coupling
・
The dimensions (A, B and X) illustrated in Fig. 5-2 must be within the tolerance
shown in Table 5-1.
(2) Chain, Sprocket and Gear
・
The chain tension angle must be perpendicular to the shaft of reducer.
・
The pitch circle of the sprocket and gear must be more than three times of the shaft diameter.
・
Locate the sprocket and gear as close to reducer as possible so the load point will be closer to the reducer's
vertical center line (Fig. 5-3).
(3) V Belt
・
Excessive V belt tension will damage the output shaft or bearing. Refer to the V belt catalogue for tension.
・
The parallelism, eccentricity β of the two pulleys should be within 20´. (Fig. 5-4)
・
Use a matched set with identical circumferential length when more than one V belt is used.
Table 5-1 Coupling alignment tolerance
Tolerance for A dimension
0.05mm
Tolerance for B dimension
0.05mm
X dimension
Specified by coupling manufacturer
Fig. 5-1
Coupling
Shaft
Shaft-end thread
X
X
A
B
Fig. 5-2
Fig. 5-3
Fig. 5-4
β
β
Reducer
Coupling
Shaft
5. Connecting to machinery
