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2.3
Permissible load for the shaft
For the permissible load for the shaft specific to the rotary servo motor, refer to the chapter of the applicable rotary servo
motor series.
• Use a flexible coupling and adjust the misalignment of the shaft to less than the permissible radial load.
• When using a pulley, sprocket, or timing belt, keep the radial load within the permissible value.
• Exceeding the permissible load can cause deterioration of the bearing and damage to the shaft.
• The load indicated in this section is a static load in a single direction and does not include eccentric loads. To prevent the
rotary servo motor being damaged, make eccentric loads as small as possible.
Precautions
Do not use a rigid coupling as it may apply excessive bending load to the shaft of the rotary servo motor, leading the shaft to
break and the bearing to wear out.
2.4
Protection from oil and water
Provide adequate protection to prevent foreign matter, such as oil from entering the rotary servo motor shaft. When installing
the rotary servo motor, consider the items in this section.
• Do not use the rotary servo motor with its cable soaked in oil or water.
Capillary action
• When the servo motor is to be installed with the shaft end upward, provide measures so that it is not exposed to oil and
water entering from the machine side, gear box, etc.
Gear
• If oil such as cutting oil splashes on the servo motor, the sealant, packing, cable, and other parts may be affected
depending on the oil type.
• In the environment where the rotary servo motor is exposed to oil mist, oil, or water, the rotary servo motor of the standard
specifications may not be usable. Please contact your local sales office.
2 INSTALLATION
22
2.3 Permissible load for the shaft
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Rotary
servo
motor
Oil/water pool
Lubricating oil
Rotary servo motor
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