Reducers

Reducers are mechanical device that outputs power obtained from the output shaft of a power source such as a motor by reducing the rotational speed using gears.

The ratio of the number of gear teeth on the input and output sides is the reduction ratio, and the torque at the output shaft is inversely proportional to the reduction ratio.

Our line-up includes three gear types - helical gears, hypoid gears and worm gears - which can be selected according to the motor specification, shaft arrangement (parallel or right-angle shaft) and output shaft shape (solid or hollow) to suit the purpose.

Types and features of gears

The following five kinds of gears are used in our reducer. The features of each gear are shown in the table below.

Hypoid gear Cylindrical Worm Troidal Worm Bevel gears Helical Gear
Gears Gear Picture Gear Picture Gear Picture Gear Picture Gear Picture
Axis Position Right angle shafts Parallel shafts
Skew Cross
Efficiency 80% 40~70% 40~80% 90% 90%
Noise Good Excellent Excellent Fair Fair
Self-Locking ※ None Provided
(Reduction ratio 1/60)
Provided
(Reduction ratio 1/60)
None None

※Self-Locking: This is a function of the worm gear that the input shaft side cannnot be turned from the output shaft side.
Generally, reduction ratio is 1/60 as a single-step reduction.

Gear Reducer for Servo Motors

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 supporting servo motors from various companies, achieving high economic efficiency and quick delivery by converting general-purpose gear heads into servo gearheads.

Hypoid gear head HMTK

Model No.  HMTK□□□□H/US/UT/L~

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High-efficiency with right-angle shaft type. 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.
  • ・High Efficiency
    Less sliding and high efficiency compared with worm types. Requires less power under the same output conditions.
  • ・Compact, space saving, free mounting direction
    The compact body with reduced height dimension allows flexible installation and mounting.
    There are no limitation on the installation angle, such as horizontal, vertical, and tilt.
Compatible servo motor

0.2~5kW

Reduction ratio

1/5~1/200

Output shaft type

Hollow / Solid

Output shaft backlash

20~60 arc-minutes

Mounting type

Hollow shaft type,
face mount type,
foot mounting type
(Please contact us.)

Helical gear head GMTK

Model No.  GMTK□□□□L/U/F~

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Parallel shaft and high-efficiency. 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.
  • ・High Efficiency
    A high-efficiency helical gear is used to maximize the servomotor performance.
  • ・Low Noise & Long Life
    The reducer unit provides low-noise operation and long service life that were achieved through our years of experience manufacturing gear motors.
  • ・Free mounting direction
    There are no limitation on the installation angle, such as horizontal, vertical, and tilt.
Compatible servo motor

0.2~2kW

Reduction ratio

1/5~1/200

Output shaft type

Solid

Output shaft backlash

30~70 arc-minutes

Mounting type

Foot mount,
face mount,
flange mount

Worm gear head SWJMK, SWMK

Model No.  SW(J)MK□□T~

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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 & Low Vibration
    Unlike other types of gear transmission, the worm gear considerably reduces vibration and noise due to sliding contact.
  • ・Space Saving
    The dedicated case for flange mounting allows you to downsize your overall equipment.
  • ※Limitation for mounting direction
Compatible servo motor

0.2~7kW

Reduction ratio

1/10~1/60

Output shaft type

Hollow

Output shaft backlash

15~40 arc-minutes

Mounting type

Hollow Shaft Type

Worm gear head EWJMK, EWMK

Model No.  EW(J)MK□□T~

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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 & Low Vibration
    Unlike other types of gear transmission, the worm gear considerably reduces vibration and noise due to sliding contact.
  • ・High Precision & Compact
    Basic foot mount type with well-balanced optimum design delivers compactness and high precision.
  • ※Limitation for mounting direction
Compatible servo motor

0.2~7kW

Reduction ratio

1/10~1/60

Output shaft type

Solid

Output shaft backlash

25~40 arc-minutes

Mounting type

Foot Mount Type