1312
5. Coupling with Other Machines
Common
12
CAUTION
- Conrm the rotation direction before coupling the unit with the driven machine. Incorrect rotation direction may
cause personal injury or damage to the equipment.
- When operating the product alone (uncoupled), remove the key that is temporarily attached to the slow speed shaft;
otherwise the key could y o, and injury may result.
- Cover rotating parts; otherwise, injury may result.
- When coupling the product with a load, check that the centering, the belt tension and parallelism of
the pulleys are within the specied limits. When the unit is directly coupled with another machine, check that the
direct coupling accuracy is within the specied limits. When a belt is used for coupling the unit with another machine,
check the belt tension. Correctly tighten bolts on the pulley and coupling before operation; otherwise there is a risk of
injury due to scattering the broken pieces or of damage to the products.
5-1 Checking Rotational Direction
(1) For gearmotor
Table 5-1 shows the direction of slow speed shaft rotation when wiring is performed as on P18–31.
Table 5-1 Slow Speed Shaft Rotation Direction (Gearmotor)
When wiring is performed as shown on P18–31, the motor shaft rotates to the right as seen from
the anti-load side.
In the following diagrams, arrows show the direction of slow speed shaft rotation in this case.
Gear unit construction Single Reduction – Triple Reduction
Double Reduction
SK Series
Low reduction ratio series
Slow speed shaft
rotation direction
(Seen from load side)
Note : To cause reverse rotation, reverse R and T on P18 and P20–27.
(2) For reducer
Table 5-2 Slow Speed Shaft Rotation Direction (Reducer)
Gear unit construction Single Reduction – Triple Reduction
Double Reduction
SK Series
Slow speed shaft
rotation direction
Rotates in opposite direction as the
high speed shaft.
Rotates in same direction as the high
speed shaft.
Note : For the SK series, “SK” is appended to frame sizes.
For the low reduction ratio series, “P” is prepended to nomenclature.
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