Toshiba TH650A Maintenance Manual page 24

c) Axis 3
The axis 3 AC servo motor is mounted on the axis 2 arm.
The motor revolution is input to the ball screw nut through the timing belt to move
the ball screw spline up and down.
d) Axis 4
The axis 4 AC servo motor is mounted on the axis 2 arm.
The motor revolution is input to the ball spline nut through the reduction gear and
timing belt to revolve the ball screw spline shaft.
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MAINTENANCE MANUAL
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