— 13-2 —
13.2. Maintenance Check
13.2.1. Motor
l Since a Megatorque Motor does not have any parts which will wear out, a daily maintenance check
should be enough.
l The table below shows the maintenance check and intervals. The checking interval shown in the
table is reference only. It should be decided accordingly to the actual use conditions.
Caution : Do not disassemble the Motor and resolver. If disassembling Motor is
necessary, contact your local NSK representative.
Table 13-1 : Motor maintenance check
Item Checking interval How to check Remarks
Vibration/Noise Daily • Touching and hearing • Watch daily changes
Appearance According to environment
• Wipe off dust/slag
• Blow off slag
–
Insulation Once/year
• Resistance test
(Motor coil and ground earth)
(Disconnect Driver Unit)
• Resistance ≥ 10MΩ
Full check According to Motor condition • Overhaul (NSK) –
13.2.2. Driver Unit and Cable Set
l As a Driver Unit does not have any contact point and highly reliable semiconductors are used, the
daily check is not necessary. Checkings as shown in Table 13-2 are necessary at least once a year.
Table 13-2
Item Interval Check point Remarks
Retighten screws Once/year
• Terminal block screw.
• Connector fixing screw.
–
Cleaning Once/year
• Remove dust or contaminants
inside of Driver Unit.
–
Cable check Once/year
• Check for damages and cracks
of cables.
• When the cable is forced to bend or
twist, checking frequency should be
increased.
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