3
2.
Installing the gearhead
Using the pilot sections of the motor and gearhead as guides, install the gearhead
to the motor and tighten the hexagonal socket head screws.
Confirm that no gaps remain between the motor flange surface and the end face
of the gearhead pilot section.
At this time, the motor cable position can be changed to a desired 90° direction.
When installing the gearhead, slowly rotate it clockwise/counterclockwise to
prevent the pinion of the motor output shaft from contacting the side panel or
gear of the gearhead.
Install using pilot sections as guides
Change the cable position to
a desired 90° direction.
Note
•
Do not forcibly assemble the motor and gearhead. Also, do not let
metal objects or other foreign matter enter 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.
•
The hexagonal socket head screws assembling the motor and
gearhead are used to attach the motor and gearhead temporarily. Be
sure to use the supplied mounting screw set to install the motor.
z
Installing the 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.
Applicable mounting screw
Model
Screw
size
Tightening torque
∗
BLM230
BLM260
M4
1.8 N·m (15.9 lb-in)
[1.4 N·m (12.3 lb-in)]
BLM5120
BLM5200
BLM5300
BLM5400
M8
15.5 N·m (137 lb-in)
[12.0 N·m (106 lb-in)]
∗
The brackets [ ] indicate the value for stainless steel.
Install the motor to a mounting plate of the following size or larger, so that the motor
case temperature will not exceed 90 °C (194 °F).
[mm (in.)]
Model
Size of mounting plate
Thickness
Material
BLM230
115×115 (4.53×4.53)
5 (0.20)
Aluminum alloy
BLM260
135×135 (5.31×5.31)
BLM5120
165×165 (6.50×6.50)
BLM5200
200×200 (7.87×7.87)
BLM5300
BLM5400
250×250 (9.84×9.84)
6 (0.24)
Note
Do not install the motor to the mounting hole diagonally or assemble
the motor forcibly. Doing so may cause damage to the flange pilot
section, thereby resulting in damage to the motor.
■
■
Installing a load
When installing a load on the motor (gearhead), pay attention to the following
points.
•
Align the centerline of the motor output shaft (gearhead output shaft) with the
centerline of the load.
•
A key slot is provided on the output shaft of each combination type • parallel shaft
gearhead. Form a key slot on the load side and secure the load using the supplied
parallel key.
Note
•
When coupling the motor (gearhead) with a load, pay attention to
centering, belt tension, parallelism of pulleys, etc. Also, firmly secure the
tightening screws of the coupling or pulleys.
•
When installing a load, do not damage the motor output shaft
(gearhead output shaft) or bearing. Forcing in the load by driving it
with a hammer, etc., may break the bearing. Do not apply any excessive
force to the output shaft.
•
Do not modify or machine the motor (gearhead) output shaft. The
bearing may be damaged or motor (gearhead) may break.
When using the output shaft end tapped hole of a gearhead
(
GFV4G
,
GFV5G
,
GFV6G
only)
Use a tapped hole provided at the end of the
output shaft as an auxiliary means for preventing
the transfer mechanism from disengaging.
Fixed screw
Screw
Spacer
Transmission
parts
Gearhead model Screw size
Effective depth of
screw
GFV4G
M5
10 mm (0.39 in.)
GFV5G
GFV6G
M6
12 mm (0.47 in.)
■
■
Permissible radial load and permissible axial load
The radial load and the axial load on the output shaft of the motor (gearhead) must
be kept under the permissible values listed below.
Note
Failure due to fatigue may occur when
the motor (gearhead) bearings and
output shaft are subject to repeated
loading by a radial or axial load that is
in excess of the permissible limit.
10 mm (0.39 in.)
20 mm (0.79 in.)
Distance from output shaft end
Axial load
Radial load
z
Combination type • parallel shaft gearhead
Model
Permissible radial load [N (lb.)]
∗1
Distance from tip of gearhead output shaft Permissible axial
load [N (lb.)]
Gear ratio
10 mm (0.39 in.)
20 mm (0.79 in.)
BLM230
5
100 (22)
[90 (20)]
150 (33)
[110 (24)]
40 (9)
10
to
20
150 (33)
[130 (29)]
200 (45)
[170 (38)]
30
to
200
200 (45)
[180 (40)]
300 (67)
[230 (51)]
BLM460S
5
200 (45)
[180 (40)]
250 (56)
[220 (49)]
100 (22)
10
to
20
300 (67)
[270 (60)]
350 (78)
[330 (74)]
30
to
200
450 (101)
[420 (94)]
550 (123)
[500 (112)]
BLM5120
5
300 (67)
[230 (51)]
400 (90)
[300 (67)]
150 (33)
10
to
20
400 (90)
[370 (83)]
500 (112)
[430 (96)]
30
to
200
500 (112)
[450 (101)]
650 (146)
[550 (123)]
BLM6200S
BLM6300S
∗2
BLM6400S
∗3
5
to
20
550 (123)
[500 (112)]
800 (180)
[700 (157)]
200 (45)
30
,
50
1000 (220)
[900 (200)]
1250 (280)
[1100 (240)]
300 (67)
100
,
200
1400 (310)
[1200 (270)]
1700 (380)
[1400 (310)]
400 (90)
∗1
The values assume a rated speed of 3000 r/min or below. The values in [ ] are based on a
rated speed of 4000 r/min.
∗2
The gear ratio of the
BLM6300S
is 5:1 to 100:1.
∗3
The gear ratio of the
BLM6400S
is 5:1 to 50:1.
z
Round shaft type
Model
Permissible radial load [N (lb.)]
Distance from output shaft end of the motor Permissible axial load
[N (lb.)]
10 mm (0.39 in.)
20 mm (0.79 in.)
BLM230
BLM260
80 (18)
100 (22)
Not to exceed
one-half the motor’s
mass
∗
BLM5120
BLM5200
BLM5300
BLM5400
150 (33)
170 (38)
∗
Minimize the axial load. If an axial load must be applied, do not let it exceed one-half the
motor’s mass.
