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Assembling of gear head
Assembling of gear head
• Preparation for assembling
(1) Use the product in combination with only the compatible gear head. Failure to
observe this instruction will result in malfunction.
(2) Make sure that the O-ring is attached to the bottom of motor flange.
If the gear head is assembled with O-ring floating, it may result in grease leakage.
(3) When grease adheres to the end surface of gear head, thoroughly wipe it off.
If the gear head is assembled with grease adhered, it may exude.
• Assembling
(1) Direct the motor pinion upward, and make sure that the relation between direction of
motor lead wire and output shaft of gear head matches with the equipment.
(2) Do not contact a tooth tip of pinion shaft to a tooth tip of gear head.
Set each toothes of motor and gear head correctly and gently press and turn the gear
head in counter and counter-clockwise.
(3) To attach the gear head to an application, use the "attaching screws" supplied with
the gear head and tighten the screws with appropriate torque and with care not to
pinch the O-ring, so that the there is no gap between motor flange and gear flange.
The recommended torque is shown below.
Size
Gear head type
80 mm sq.
MX8G
MZ9G
90 mm sq.
MY9G
<Note>
Do not forcedly assemble the motor and gear head. Do not damage the tooth of
the motor pinion and gear head. Incorrect assembly results in abnormal noise
generation or shortened unit life.
Output shaft
Motor pinion
O-ring
Leadwires
30
Tightening
Attachment
Screw size
torque
2.5 N ・ m
M5
3.0 N ・ m
M6
M6
3.0 N ・ m
Faucet portion
end face
Faucet face
Flange face
Maintenance/ Inspections
Maintenance/ Inspections
Routine maintenance and inspection are essential for proper and satisfactory operation of
the motor.
Maintenance/ Inspection item
Maintenance/
Check item
Input voltage
Input current
Insulation
resistance
Noise
Vibration
Grease
leakage
pitch
94 mm
Installation
bolt
104 mm
Use
—
environment
Caution
• Power-on/off operations should be done by the operators themselves for ensuring safety
in checking.
• Do not touch the motor while it is running or immediately after it stops because it gets hot
and stays hot for a while after power has been turned off.
• When testing the insulation resistance of the brushless amplifier with the megger, discon-
nect the amplifier from all associated devices. Performing megger testing without first
disconnecting these devices will cause failure.
• Do not use benzine, thinner, alcohol, acidic or alkaline detergent, as it may cause discol-
oration or breakage of the outer case.
be sure to contact our service department or the sales agent of purchase.
Inspection
procedure
Voltmeter
Must be within ±10% of rating.
Ammeter
Must be within rated input current described on nameplate.
The resistance of motor should be 1 MΩ or higher when tested
with a 500 V megger.
Insulation
Measuring position:
resistance
Between power input line (L1, L2,L3) and grounding wire
tester
Brushless motor:
Across phase (U, V, W) and ground terminals
Noise level must not be different from the usual level. In addition,
Hearing
abnormal noise such as rumbling noise must not be heard.
By hand
Free from abnormal vibration.
Check that circumference of the motor and gear head are free
Visual check
from oil and grease.
If grease leakage will cause problem, use grease sealing cover.
Torque
Check for loosening of bolt, and tighten additionally as
wrench
necessary.
Check the ambient temperature and humidity, and make sure
By sight
that dirt, dust, or foreign substance is not found.
When disassembly, troubleshooting, etc., is needed,
Condition
31
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