Hiwin EM1 Series User Manual page 46

User Manual
8.2.1.5 Coupling
1. Before installation, please clean and remove the rust spots, dust and oil on the outer
surface of the motor shaft and inner surface of coupling, especially molybdenum,
silicon and fluorine type lubricant or esters. These lubricants and ester affect the
friction coefficient and should never be on the motor shaft and coupling.
2. According to load conditions, choose suitable coupling. Excessively large or small
coupling can cause damage to coupling.
3. When the two clamping screw bolts on coupling are loose, check whether or not the
coupling can slightly move along the axial direction and rotating direction. If the
coupling cannot be smoothly moved, re-adjust the concentricity of both axis of motor
shaft and coupling. This is an easy way to check the concentricity between both
ways. If this method cannot be used to check, then use machine part precision
management or other methods to check installation concentricity.
4. When installing the coupling on motor shaft, do not apply too much compressive or
tensile force. Do not impact the motor shaft or it can affect the installation precision.
5. Before coupling install with the motor shaft, do not fasten the screw bolt.
6. When choosing the coupling, do not exceed the maximum torque limit of the
transmission. Choose the model according to the allowable eccentricity, declination,
and axial direction deviation stated in the instructions.
7. If an abnormal coupling noise (metallic noise) is discovered during operations, stop
operations immediately and check if the eccentricity of shaft are affected or if screws
are loose.
8. Do not change the screws that match the coupling, or change screws referencing its
use specifications.
9. Do not touch coupling while operating. To prevent danger, install a protective outer
cover and other safety measures.
10. Conduct installation only when the main power is shut OFF.
11. When installing the motor, pay attention to the following three types of basic
deviation. Illustrations are shown below.
1. Eccentricity (A):
EM1 Series AC Servo Motors
Installation, Assembly and Commissioning
Axial direction
Rotation
2. Declination (B):
EM1-01-0-EN-2110-MA
3. Axial direction displacement (C):
Page 46 of 72