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MDS-D/DH Series Specifications Manual
4-2 Spindle motor
4 - 23
4-2-3 Machine accuracy
Machine accuracy of the spindle motor's output shaft and around the installation part is as below.
(Excluding special products)
4-2-4 Installation of spindle motor
To yield good cooling performance, provide a space of at least 30mm between the cooling fan and wall. If
the motor is covered by a structure and the air is not exchanged, its cooling performance degrades and the
motor is unable to fully exercise its performance, which may cause the spindle motor overheat alarm. Do not
use the spindle motor in an enclosed space with little ventilation.
Accuracy [mm]
Measurement
point
Flange size [mm]
Amplitude of the flange surface to the output shaft a0.08
Amplitude of the flange surface's fitting outer diameter b0.04
Amplitude of the output shaft end c0.02
1. Rubber packing for waterproof is attached on the inner surface of the top cover of terminal block.
After checking that the packing is installed, install the top cover.
2. When installing a motor on a flange, chamfer(C1) the part of flange that touches inside low part of
the motor.
a c
b
CAUTION
wall
Cooling fan
30mm or more