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High efficient - optimally designed

HIGH Reliability and Efficiency

High Permissible Torque

The permissible torque is twice that of conventional models

Increase in the strength of the gear raises the maximum permissible torque to twice the torque when compared with conventional models. A torque range that was unavailable can now be used.
High Permissible Torque

High Strength

Permissible load is up to twice as high in comparison to that of conventional models

The strength of the permissible radial load and the permissible axial load is twice that of the conventional model.

High Strength
Conventional model 4GN-K
Permissible radial load
200 N
Permissible axial load
50 N
High Strength
 
High Strength
KII Series 4GN-K
Permissible radial load
450 N
Permissible axial load
100 N

Long Life

The rated life is twice that of the conventional model

The large bore bearing used for this model extends the gearhead's rated life to 10,000 hours, which is twice that of the conventional model. This reduces the maintenance work for the device.

Rated life hours: Definition determined by Oriental Motor. For details, contact Oriental Motor.

Comparison of the rated life hours

Comparison of the rated life hours

Silent

Reduced gear contact noise by 50%

Noises from motor/gearhead contact have been reduced by 6 dB compared with the conventional standard motor. This simply means the noises have been halved.

Comparison of the noise level in the 80 mm frame size type

Comparison of the noise level in the 80 mm frame size type

MAXIMUM Performance and
high Efficiency

The optimal magnetic design and dedicated parts have dramatically reduced losses, achieving high efficiency. Compared with the conventional 90 W model under the same conditions, the new one has lower power consumption, contributing to a labor-saving device since the reliability has been aslo increased.
High efficiency

Low heat generation and low vibration

With less heat generation and vibration of the motor, achieved by reduced losses, the reliability of the device has been significantly increased.

Comparison with conventional model

Comparison with conventional model

High Efficiency in compliance with IEC 60034-2-1

A motor efficiency of 77.8% (IE4, classification) and 73.3% (IE3 classification) is achieved with optimal magnet design and specialized parts. Loss is greatly reduced, the motor's output is increased, and it is fanless.
High Efficiency Type IE3 and IE4

Environmental Resistance

Fan-less structure

Reduction in loss has reduced the heat generation in the motor. Therefore, the KII Series’s singlephase 220/230 VAC 50 Hz type and the KIIS Series do not require the cooling fan that was installed in the conventional models of 60 W or higher, resolving the problem of raising dust.
Fan-less structure

Water resistance specification in compliance with IEC 60034-5

The sealing structure of the motor, gearhead, and terminal box has been strengthened. The terminal box type conforms to the IP66 rating degree of protection.
IP66 water resistance specification

Best For Combination With An Inverter (KIIS Series only)

Variable speed control

By combining with an inverter, you can control the speed in a wide range from the low speed at 3 Hz to the high speed up to 120 Hz. Even at a low speed, high torque is produced. In addition, less variation under loads enables more stable speed control.
Variable speed control

About use with an inverter of other manufacturers

For easy use of an inverter, we provide, for your reference, the "Speed - Torque characteristics" and "Parameter settings for the inverter" when this product is combined with an inverter of another manufacturer.

UNIQUE User Friendly Design

The overall length is reduced by the removal of the decimal gearhead

The gearhead lineup offers a wide range of gear ratios from low gear ratios up to a maximum of 1:360. For the high gear ratios over 1:180, the decimal gearhead was previously required. Now, only one gearhead is required, achieving a saving of space.

For a gear ratio of 1:360

Output Axis Tapping

Output Axis Tapping
For motors with 25 W output power or higher, tapping has been applied to the output shaft end. This prevents the pulley and other transmission parts from coming off.

Increase Installation Accuracy

The installation surface and pilot of the gearhead are polished. The gearhead can be installed into the device more accurately.

Uses a hypoid gear with built-In Oil Seal

Oil seal is installed in the final stage of the output shaft. This prevents grease from leaking. Furthermore, 40 W and higher motors use a special oil seal with high sealing performance. This provides highly reliable measures against grease leakage.
hypoid gear with built-In Oil Seal
Description Number 1
• Hypoid gear used on first step of reducer
• High-strength helical gear installed on last step to increase strength
Description Number 2
• Shaft/gear where carburizing treatment was applied
Description Number 3
• Oil seal
• Grease leak measures implemented
• Special oil seal used to enhance seal performance

Combination Type

Pre-assembled gearhead

The combination type comes with a motor and a gearhead pre-assembled. This type makes the installation into the device easy, and you no longer have to worry about giving damage to the shaft, which may cause abnormal noise.
Pre-assembled gearhead
The combination type comes with the motor and gearhead pre-assembled with dedicated screws. Motors and gearheads are also available individually for maintenance.

Slim Terminal Box

Improvement in workability

A slim terminal box is used to make wiring work easier. The box is slimmer than conventional products. The cable outlet can be changed by 90 degrees to four different directions. The slim terminal box type conforms to the IP66 rating degree of protection. (Except the installation surface of the round shaft type)
Improvement in workability

Cost Performance

High performance at an affordable price

This model is affordably priced, equivalent to or less than conventional models, while increasing in strength and efficiency.
High performance
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High performance
World K Series
25 W Three-Phase power supply input
GN-K Series
Gear ratio at 1:100
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KII Series
25 W Three-Phase power supply input
Combination-type gearhead
Gear ratio at 1:100

International Standards

Conforms to safety standards

This series conforms to the UL/CSA Standards and the China Compulsory Certification System (CCC System), and is also affixed with the CE Marking (Low Voltage Directive).
Safty stadard logo
For more information please download our
KII & KIIS Series catalogue:
rk2 catalouge
Best support before and after your purchase.