■
Gearhead Connection
Specially designed gearheads are available that can be easily coupled
directly to these motors.
Sufficient torque can be obtained while reducing the motor speed to the
required speed on the gearhead output shaft.
●
Types of Gearhead
●
The box(
□
) represents the desired gear ratio, which thereby becomes part of
the code for the gearhead.
●
Gear Ratio: 3, 3.6, 5, 6, 7.5, 9, 12.5, 15, 18, 25, 30, 36, 50, 60, 75, 90, 100,120,
150, 180
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Precautions for Connecting Gearhead to the Motor
1. Connecting Gearhead
As the figure to the right shows, motor and gearhead are put together
using the recessed areas on each unit as guides while gently turning
the gearhead back and forth for smooth engagement of gearing and
cog. Care should be taken not to damage the shaft by applying
excessively large force during attachment. Then use the mounting
screws that come with the gearhead to screw the gearhead onto the
motor until if fits snugly.
Note: Note that attempt to put motor and gearhead together by force or
entrapping of material like metal chips can result in damage to the geared
section of the shaft or the cog leading to abnormal noise and shortened
operating life. Assembly should be carried out with the necessary care.
2. Installation
Install the motor firmly to your equipment. The heat-sink effectiveness
and protection of vibration are required as much as possible. Useful
motor mountings are available separately.
3. Grounding
Any one of the mounting bolts may serve to fix the grounding wire to
the motor casing at the time of installation of the unit. If necessary,
remove all the bolt hamptom that may impede conductivity around the
bolt mounting hole.
■
Precaution on Operation
●
If the motor is ON continuously for a period of 30 minutes or more,
the rated temperature may be exceeded. Under no circumstances
should the temperature of the motor case be allowed to rise above
90
(194ºF).
●
Use the motor in a place where the working ambient temperature is
−
10
to 50
(14ºF to 122ºF) and humidity is 85
％
less.
●
Do not use the components in a place where a corrosive gas, water,
oil, dust and/or direct sunlight may contact the components.
●
Avoid places where vibration/shocks are heavy and/or constant.
The geared section of the shaft
Edge of recessed area
Recessed area
Flange surface
Ground Wire
Motor Models
4RK25GN-AM-115
4RK25GN-CME
5RK40GN-AM-115
5RK40GN-CME
Gearhead Models
Inch size output shaft
4GN
□
KA
(Ball bearing type)
5GN
□
KA
(Ball bearing type)
Metric size output shaft
4GN
□
K
(Ball bearing type)
5GN
□
K
(Ball bearing type)
Inch size shaft gearhead
Metric size shaft gearhead
Models
4GN
□
KA
5GN
□
KA
Shaft Diameter
0.375" dia.
(9.525mm dia.)
0.5" dia.
(12.7mm dia.)
Shape of
Shaft
Flat cutted
Flat cutted
Models
4GN
□
K
5GN
□
K
Shaft Diameter
10mm dia.
12mm dia.
Shape of
Shaft
Key slot
(Key provided)
Key slot
(Key provided)
●
Size of Gearhead output shaft
■
Trouble Shooting
Symptoms
Motor does
not turn
Motor turns
wrong
direction
Causes
No voltage coming to
motor
Electromagnetic brake is
ON
Load is too large
Motor is mis-wired
Gearhead is attached
Check Point
Check that motor has no loose-
connection
Check that lead wires have no
interruption
Check that the electromagnetic brake is
released
Check that the electromagnetic brake
has been energized
Remove the load and check operation of
motor alone
Check the motor connection
Check the gear ratio
When connecting gearhead to reduce
the speed, the gearhead output shaft
can be made to rotate in an opposite
direction as the motor depending on
which speed reduction ratio is chosen.
