2
Installation
Location for installation
Install it in a well-ventilated location that provides easy access for inspection.
•
Inside an enclosure that is installed indoors (provide vent holes)
•
Operating ambient temperature
Classification representing the power supply voltage
JA
/
JC
: −10 to +50 °C (+14 to +122 °F) (non-freezing)
UA
/
UC
/
GC
: −10 to +40 °C (+14 to +104 °F) (non-freezing)
*
The lowest temperature is 0 °C (+32 °F) for gearheads of the gear ratio 2 and 3.
•
Operating ambient humidity 85% or less (non-condensing)
•
Area that is free from an explosive atmosphere or toxic gas (such as sulfuric
gas) or liquid
•
Area not exposed to direct sun
•
Area free of excessive amount dust, iron particles or the like
•
Area not subject to splashing water (storms, water droplets), oil (oil droplets)
or other liquids
•
Area free of excessive salt
•
Area not subject to continuous vibration or excessive shocks
•
Area free of excessive electromagnetic noise (from welders, power machinery,
etc.)
•
Area free of radioactive materials, magnetic fields or vacuum
•
Altitude Up to 1000 m (3300 ft.) above sea level
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. Grease leakage may lead to
problems in the customer's equipment or products.
Installation method
Note
Do not install the motor to the mounting hole diagonally or assemble
the motor forcibly. Doing so may cause damage to the motor.
z
Combination type
Secure the motor with mounting screw set (supplied) through the four mounting
holes provided. Do not leave a gap between the motor and mounting plate.
Motor
Gearhead
(L2)
L1
Motor
Hexagonal
socket head
screw
Gearhead
Mounting plate
Spring
washer
Washer
Supplied
Mounting screw set (supplied)
Model
Gear ratio
Hexagonal socket head screw
L2
[mm (in.)]
Tightening
torque
Screw
size
Material
L1
[mm (in.)]
2RK6
2, 3
M4
Stainless
steel
55 (2.17)
8 (0.31)
1.4 N·m
(12.3 lb-in)
5 to 25
50 (1.97)
7 (0.28)
30 to 120
55 (2.17)
8 (0.31)
150 to 360
60 (2.36)
8 (0.31)
3RK15
2, 3
M6
65 (2.56) 12 (0.47)
5.0 N·m
(44 lb-in)
5 to 25
60 (2.36) 12 (0.47)
30 to 120
65 (2.56) 12 (0.47)
150 to 360
70 (2.76) 12 (0.47)
4RK25
2, 3
65 (2.56)
9 (0.35)
5 to 25
60 (2.36)
9 (0.35)
30 to 120
65 (2.56)
9 (0.35)
150 to 360
70 (2.76)
9 (0.35)
5RK40
5RK60
2, 3
M8
85 (3.35) 16 (0.63)
12.0 N·m
(106 lb-in)
5 to 18
70 (2.76) 14 (0.55)
25 to 100
85 (3.35) 16 (0.63)
120 to 300
90 (3.54) 15 (0.59)
5RK90
3
85 (3.35) 16 (0.63)
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)
Removing/Installing the gearhead
See the following steps to replace the gearhead or to change the outlet
position of the lead wires and the position of the terminal box.
Removing the gearhead from the motor
Remove the hexagonal socket head screws (2 pieces)
assembling the motor and gearhead and detach the
motor from the gearhead.
Hexagonal socket
head screw
Installing the gearhead to the motor
1.
Keep the pilot sections of the
motor and gearhead in parallel,
and assemble the gearhead with
the motor while slowly rotating it
clockwise/counterclockwise.
At this time, note so that the pinion
of the motor output shaft does not
hit the side panel or gears of the
gearhead strongly.
2.
Check no gaps remain between the
motor and gearhead, and tighten
them with hexagonal socket head
screws (2 pieces).
Pinion of
the motor
output shaft
Pilot section
Assemble the gearhead to the motor
in a condition where the motor output
shaft is in an upward direction.
Side panel
Gearhead model Screw size Tightening torque
2GV
B
3GV
B
4GV
B
M2.6
0.4 N·m
(3.5 lb-in)
5GV
B
5GVH
B
5GVR
B
M3
0.6 N·m
(5.3 lb-in)
Note
•
Do not forcibly assemble the motor and gearhead. Also, prevent
metal objects or foreign substances from entering in the gearhead.
The pinion of the motor output shaft or gear may be damaged,
resulting in noise or shorter service life.
•
Do not allow dust to attach to the pilot sections of the motor and
gearhead. Also, assemble the motor and gearhead carefully by not
pinching the O-ring at the motor pilot section. If the O-ring is crushed
or severed, grease may leak from the gearhead.
z
Rround 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.
Motor
Mounting plate
Model Screw size
Tightening torque
2RK
M4
1.8 N·m (15.9 lb-in)
[1.4 N·m (12.3 lb-in)]
3RK
M5
3.8 N·m (33 lb-in)
[3.0 N·m (26 lb-in)]
4RK
5RK
M6
6.4 N·m (56 lb-in)
[5.0 N·m (44 lb-in)]
The brackets [ ] indicate the value for stainless steel.
z
Motor with cooling fan
When installing a motor with cooling fan onto a device, leave 10 mm (0.39 in.)
or more behind the fan cover or open a ventilation hole so that the cooling
inlet on the back of the motor cover is not blocked.
z
Mounting the capacitor
Mount the capacitor securely by using M4 screws
(not provided).
Ø4.3 mm
(0.169 in.)
Note
•
Do not let the screw fastening torque exceed 1 N·m (8.8 lb-in) to
prevent damage to the mounting foot.
•
Mount capacitor at least 10 cm (3.94 in.) away from the motor. If it
is located closer, the life of the capacitor will be shortened.
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.
