IAI ROBO Cylinder RCS4-WRA12C Instruction Manual page 180

4.6 How to Replace Components
4) With the origin mark marked on the motor end pulley facing outwards,
hang the belt on the pulleys.
5) 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.
Direction
for Tension
4-15
Origin Mark
Motor Unit Affixing Screw
Tensile Force when Attaching Motor Unit
Model
WRA10R
WRA12R
WRA14R
Motor Unit Affixing Screw Tightening Torque
Model
WRA10R, WRA12R
WRA14R
Belt
Tension Force [N]
20 to 25
40 to 45
70 to 80
Tightening Torque [N•m]
2.1
4.1