4.6 How to replace components
4-22
4. Maintenance and Inspection
5) With the origin mark marked on the motor end pulley facing outwards, hang the
belt on the pulleys.
6) Apply tension in the force shown in the table below to the motor unit, and tighten
the motor unit affixing screw in the tightening torque shown in the table below.
Tensile Force when Attaching Motor Unit
Model Tension Force [N]
SA4R 20 to 25
SA6R 40 to 45
SA7R 70 to 80
SA8R 100 to 110
Motor Unit Affixing Screw Tightening Torque
Model Tightening Torque [N•m]
SA4R and SA6R 2.1
SA7R and SA8R 4.1
Origin Mark
Belt
Motor Unit Affixing Screw
Direction
for Tension
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