2
Removing/Installing the gearhead
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Removing the gearhead from the motor
Remove the gearhead by unscrewing the hexagonal socket head screws holding
the gearhead to the motor (2 locations).
Hexagonal socket head screw
(2 locations)
Screw size: M3
Illustration shows the view from motor case side.
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Installing a gearhead to a motor
Using the pilot sections of the motor and gearhead as guides, slowly rotate it
clockwise/counterclockwise to prevent the pinion of the motor output shaft from
contacting the side panel or gear of
the gearhead. Also confirm that no
gaps remain between the motor and
gearhead. An O-ring is attached to the
flange of the motor. Do not pinch the
O-ring when assembling the motor and
gearhead. Pinching the O-ring causes
a grease leak from the gearhead.
Pinion of the motor
output shaft
Pilot section
Flange
Gearhead
Motor
Note
Do not forcibly assemble the motor and gearhead. Also, do not let
metal objects or other foreign matters enter the gearhead. The pinion
or gear of the motor output shaft may be damaged, resulting in noise
or shorter service life.
Connection
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Insulate the connecting part of the motor lead wires and power supply.
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Ground the motor using a Protective Earth Terminal.
Terminal box type
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Connection method to a terminal box
Connection procedure
1.
Loosen the terminal cover mounting screws, and remove the terminal cover
from the terminal box.
2.
Insert the cable through the cable gland, and connect the lead wires to the
terminal block.
Connect the grounding lead wire to the Protective Earth Terminal.
3.
Install the terminal cover on the terminal box.
Terminal cover
Terminal cover mounting screw
(M4-4 pcs.)
Tightening torque:
1.0 to 1.5 N·m (8.8 to 13.2 lb-in)
Terminal box
Cable gland
Insert the cable through the cable gland
When inserting the cable
through the cable gland, loosen
the tightening nut.
After connecting to the terminal
block, turn the tightening nut to
secure the cable.
Nipple
[2.0 to 2.5 N·m (17.7 to 22 lb-in)]
Tightening nut
[2.0 to 2.5 N·m (17.7 to 22 lb-in)]
[ ] indicates the value of the
tightening torque.
Connection method to a terminal block
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When connecting to the terminal block, use the following crimp terminal.
Round terminal with insulated coating
[Unit: mm (in.)]
Ø4.3 (0.17) or more
18 (0.71) or less
8 (0.31) or less
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To ensure safety, ground the motor using the Protective Earth Terminal
inside the terminal box.
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Layout of terminals
U, V, W and MB are indicated on the side face of the terminal block.
[ ] indicates the value of the tightening torque.
Terminal block (M4)
[1.0 to 1.2 N·m (8.8 to 10.6 lb-in)]
Protective Earth Terminal (M4)
[1.0 to 1.5 N·m (8.8 to 13.2 lb-in)]
U V W MBMB
[ Cable type ]
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Inside an enclosure that is installed indoors (provide vent holes)
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Area not subject to splashing water (storms, water droplets), oil (oil droplets) or
other liquids
Note
On rare occasions, grease may ooze out from the gearhead. If
there is a concern over possible environmental damage resulting
from the leakage of grease, provide an oil tray or similar oil catching
mechanism in order not to cause a secondary damage. Oil leakage
may lead to problems in the customer’s equipment or products.
How to install the motor
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Combination type
Secure the motor with hexagonal socket head screws (supplied) through the four
mounting holes provided. Do not leave a gap between the motor and mounting
plate. If you are purchasing only a motor for maintenance purpose, a hexagonal
socket head screw set is included in the gearhead.
Motor
Gearhead
Mounting plate
Hexagonal
socket head
screw
Supplied
Spring
washer
Washer
L2
Motor
Gearhead
L1
Hexagonal socket head screw set (supplied)
Gearhead
model
Gear ratio
Hexagonal socket head screw
Material: Stainless steel
Tightening
torque
Screw size
L1
[mm (in.)]
L2
[mm (in.)]
5GVH
o
B
5 to 18
M8
70 (2.76)
14 (0.55)
12 N·m
(106 lb-in)
25 to 100
85 (3.35)
16 (0.63)
120 to 300
90 (3.54)
15 (0.59)
5GVR
o
B
5 to 15
70 (2.76)
14 (0.55)
18 to 36
85 (3.35)
16 (0.63)
50 to 180
95 (3.74)
14 (0.55)
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Round shaft type
Secure the motor with hexagonal socket head screws (not supplied) through the
four mounting holes provided.
Do not leave a gap between the motor and mounting plate.
Installation Example
Motor
Mounting plate
Hexagonal socket head screws (not supplied)
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Screw size: M6
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Tightening torque
㻦㻌
6.4 N·m (56 lb-in)
㻌
㼇
5.0 N·m (44 lb-in)]
∗
∗
The brackets [ ] indicate the value for
stainless steel.
Installing a load
The gearhead shaft is provided with a key slot
for connecting the transmission parts. When
connecting the transmission parts, ensure that
the shaft and parts have a clearance fit, and
always fix the parallel key to the output shaft
with a screw to prevent the parts from rattling
or spinning.
Screw
Parallel key
Gearhead
output shaft
Note
Do not apply excessive force onto the output shaft of the gearhead
using a hammer or other tools. Doing so may cause damage to the
output shaft or bearings.
When using the output shaft end tapped hole of a gearhead
Use a tapped hole provided at the end of
the output shaft as an auxiliary means for
preventing the transfer mechanism from
disengaging.
Output shaft end tapped hole: M6
Fixed screw
Screw
Spacer
Transmission
parts
