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MDS-D-SVJ3/SPJ3 Series Instruction Manual
Appendix 3-8 Precautions in balancing of motor with key
Appendix 3 - 7
Appendix 3-8 Precautions in balancing of motor with key
For a motor with key, the balancing with a half key attached to the key groove on the shaft is performed
before shipment. The balancing is carried out so that the rotor's residual unbalance is reduced to 0.1g or
less.
However if a full key is attached instead (See Figure 9 below), spaces that need balancing are generated
when a fitting such as a gear, pulley and coupling is installed. Therefore take into consideration these
spaces during the balancing of each fitting, or carry out balancing with the fittings attached to the motor.
Half key
Half key
State with a half key
(State during balancing before shipment)
Spaces that need balancing
Shaft
Pulley
Full key
State with a full key State with a pulley