2
In some versions of the motor, clearance holes in the stepped key will align with the tapped holes in the motor shaft and in others
it will not. Other motor versions may not have tapped holes in the key-seat. This difference does not compromise functionality.
However, the stepped key should NOT overhang the motor shaft regardless of whether the clearance holes align or not. Refer to
Figure 2, Figure 3 and Figure 4.
STEPPED KEY
MOTOR SHAFT
STEPPED KEY DOES
NOT OVERHANG
MOTOR SHAFT
GEARBOX SIDE
MOTOR SIDE
Figure 2 - CORRECT Installation method of motor stepped key if clearance holes in the key align with motor
tapped holes
STEPPED KEY DOES NOT
OVERHANG MOTOR SHAFT
HOLES DO NOT ALIGN
MOTOR SHAFT
STEPPED KEY
GEARBOX SIDE
MOTOR SIDE
Figure 3 - CORRECT Installation method of motor stepped key if clearance holes in the key do NOT align with
motor tapped holes
STEPPED KEY
HOLES ALIGN
! WRONG !
STEPPED KEY
OVERHANGS
MOTOR SHAFT
MOTOR SHAFT
GEARBOX SIDE
MOTOR SIDE
Figure 4 - !!WRONG!! Installation method of motor stepped key. Holes align but stepped key overhangs motor
shaft
