Chapter 1. Installation
4 9
Mounting & Coupling the Motor
WARNINGS
•
Improper motor mounting and coupling can jeopardize personal safety, and compromise system performance.
•
Never disassemble the motor; doing so will cause contamination, significant reduction in magnetization, and loss of torque.
•
Improper shaft machining will destroy the motor’s bearings, and void the warranty. Consult a factory Applications Engineer
(see phone number on inside of front cover) before you machine the motor shaft.
Mounting the Motor
Servo motors used with the APEX615n can produce very high torque and acceleration. If the mounting is
inadequate, this combination of high torque/high acceleration can shear shafts and mounting hardware. High
accelerations can produce shocks and vibrations that require much heavier hardware than for static loads of the
same magnitude.
Under certain move profiles, the motor can produce low-frequency vibrations in the mounting structure that
can cause fatigue in structural members. A mechanical engineer should check the machine design to ensure
that the mounting structure is adequate.
Use flange bolts to mount servo motors. The pilot, or centering flange on the motor’s front face, can help you
position the motor. Foot-mount or cradle configurations are not recommended, because the motor’s torque is
not evenly distributed around the motor case. When a foot mount is used, for example, any radial load on the
motor shaft is multiplied by a much longer lever arm.
APEX Motor Dimensions
2.25
(57.15) Sq
Motor Sizes
233 Motor
6.340 (161.036)
232 Motor
5.340 (135.636)
231 Motor
4.340 (110.236)
Model
Motor Length
MS Connectors
1.856
(47.142) Sq
(4x) Ø 0.203 (5.156)
thru holes equally
spaced on Ø2.625 (66.675)
bolt circle
3.50
(88.9)
0.813
(20.650)
0.343
±
0.005
(8.712
±
0.127)
1.500
±
0.001
(38.10
±
0.025)
0.750
(19.05)
Motor Length
2.88
(73.15)
Ref
Longer lengths available.
Consult Compumotor for information.
0.340 (8.636)
- F
(Flat)
Shaft Options
Ø0.375 (9.525)
- N
(None)
0.60
(15.24)
- K
(Sq Key)
0.094
(2.39)
0.416 (10.566)
Dimensions in inches (mm)
SM Series Motor Dimensions
0.3751 +
-
0.0005
0.0000
(9.52 +
-
0.013)
0.000)
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