Product Info Reducer
A reducer is a mechanical device that uses gears to reduce the rotational speed of the power obtained from the output shaft of a power source such as a motor and output it.
The ratio of the number of gear teeth on the input and output sides is the reduction ratio, and the output shaft can obtain torque that is inversely proportional to the reduction ratio.
We offer a lineup of three gear types: helical gears, hypoid gears, and worm gears. You can choose from the motor specifications, shaft arrangement (parallel shaft/ right-angle shaft), and output shaft shape (solid/hollow) that suit your purpose.
table of contents
Reducer related information
Types and Features of Gears
Our reducers use the following five types of gears. The features of each gear are as shown in the table below.
| Hypoid gear | Cylindrical Worm | Troidal Worm | Bevel gear | Helical gear | |
|---|---|---|---|---|---|
| gear |  |
 |
 |
 |
 |
| Axis Position | Right-angle shaft | Parallel shaft | |||
| Skew | Intersection | ||||
| efficiency | 80% | 40～70% | 40～80% | 90% | 90% |
| noise | Good | Excellent | Excellent | Fair | Fair |
| Gear meshing | Both sliding and rolling | Sliding | Sliding | Rolling | Rolling |
| Self-locking* | none | can be (Reduction ratio 1/60) |
can be (Reduction ratio 1/60) |
none | none |
*Self-lock: A function possessed by worm gears that prevents the input shaft from rotating from the output shaft.
Generally, it has a single reduction stage with a reduction ratio of 1/60.
Reducer product list
Servo motor reducer
TERVO reducer for servo motors, which is ideal for advanced motion control by servo motors, can be selected from three types, hypoid gears/helical gears/worm gears, with the choice of right-angle/parallel output shafts and hollow/solid shafts, allowing you to select the optimum product for a wide range of applications and layouts.
In addition to being compatible with servo motors from various manufacturers, the conversion of general-purpose gearheads into servo gearheads has achieved both high economic efficiency and Quick delivery.
Hypoid gear head HMTK
Model number HMTK□□□□H/US/UT/L～
Highly efficient right-angle shaft type. General-purpose gearhead is converted into a servo, achieving both high economy and Quick delivery.
- Economical
General-purpose gear heads are designed for servo motors, allowing us to quickly deliver economical products. - -High efficiency
Compared to worm gears, it has less slippage and is more efficient. It consumes less power for the same output. - ・Compact and space-saving, and can be installed in any direction
The compact body with reduced height allows for flexible installation and mounting.
There are no restrictions on installation angle, such as horizontal, vertical, or tilt.
Compatible servo motors
0.2～5kW
Reduction ratio
1/5～1/200
Output shaft type
Hollow/Solid
Output shaft backlash
20-60 minutes
Mounting Method
hollow shaft type,
Face mount type,
Foot mount type (please inquire)
Helical gear head GMTK
Model number GMTK□□□□L/U/F～
Highly efficient parallel shaft type. General-purpose gearhead is converted into a servo, achieving both high economy and Quick delivery.
- Economical
General-purpose gear heads are designed for servo motors, allowing us to quickly deliver economical products. - -High efficiency
Highly efficient helical gears are used, making the most of the servo motor's capabilities. - ・Low noise and long life
The reducer unit provides low-noise operation and long service life that were achieved through our years of experience manufacturing gear motors. - ・Installation direction is free
There are no restrictions on installation angle, such as horizontal, vertical, or tilt.
Compatible servo motors
0.2～2kW
Reduction ratio
1/5～1/200
Output shaft type
solid
Output shaft backlash
30-70 minutes
Mounting Method
Foot mount type,
Face mount type,
Flange mounting type
Worm gear head SWJMK, SWMK
Model number SW(J)MK□□T～
High-strength, right-angle shaft type capable of quiet operation. General-purpose gear heads for servo applications achieving high economic efficiency and quick delivery.
- Economical
General-purpose gear heads are designed for servo motors, allowing us to quickly deliver economical products. - ・Low noise and vibration
Unlike other types of gear transmission, the worm gear considerably reduces vibration and noise due to sliding contact.
- ・Space saving
A dedicated case based on flange mounting is used, contributing to the compactness of the entire device. - *There are restrictions on the installation direction.
Compatible servo motors
0.2～7kW
Reduction ratio
1/10～1/60
Output shaft type
hollow
Output shaft backlash
15-40 minutes
Mounting Method
Hollow shaft type
Worm gear head EWJMK, EWMK
Model number EW(J)MK□□T～
High-strength, right-angle shaft type capable of quiet operation. General-purpose gear heads for servo applications achieving high economic efficiency and quick delivery.
- Economical
General-purpose gear heads are designed for servo motors, allowing us to quickly deliver economical products. - ・Low noise and vibration
Unlike other types of gear transmission, the worm gear considerably reduces vibration and noise due to sliding contact.
- ・High precision and compact
The basic Foot mount type has a well-balanced and optimal design, making it compact and highly accurate. - *There are restrictions on the installation direction.
Compatible servo motors
0.2～7kW
Reduction ratio
1/10～1/60
Output shaft type
solid
Output shaft backlash
25-40 minutes
Mounting Method
Foot mount type
