Small sized large diameter hollow shaft.
It is ideal for end effectors, robot joints, etc.

  • Body diameter:φ60mm
  • Body length:31.5/37.5/43.5mm
  • max torque:1.1/2.1/2.7N・m
  • Max speed:300rpm
  • Standard resolution:2,000,000P/R、20bit
  • Hollow diameter:φ20mm

Outer dimensions




Model L1dimension
MDH-6006 31.5
MDH-6012 37.5
MDH-6018 43.5
  Unit MDH-6006 MDH-6012 MDH-6018
Input power(Driver input) DCV 24(※1)/48
Maximum speed(※2) rpm 300
Rated speed rpm 300
Peak torque at stall Nm 1.1 2.1 2.7
Rated torque Nm 0.29 0.58 0.77
Continuous rated torque Nm 0.29 0.58 0.77
Peak power W 25 51 77
Peak power rate kW/s 15 46 83
Peak armature current Arms 11.1 13.7 16.6
Rated armature current(※3) Arms 3.0 2.9 3.2
Voltage constant V/krpm 11 19 26
Torque constant(at25℃) Nm/Arms 0.1 0.2 0.24
Line armature resistance(at25℃) Ω 1.0 1.5 1.3
Line armature inductance mH 0.9 1.1 1.1
Rotor poles P 16
Standard encoder resolution P/R Incremental:2,000,000(Multiplied by 4)(※4)
Moment of inertia J=GD2/4 kg・cm^2 0.31 0.42 0.53
Permissible radial loadFr 320
Permissible axial loadFa N 160
Allowable moment Nm 8.3 10.1 11.9
Repeated positioning accuracy at shutlling Pulse ±1
Mass kg 0.53 0.65 0.77
Applicable motor driver   MC-200-7220▢ / MC-200C-6018▢
Standard heat sink   200×200×10 A5052

(※1) In case you use with, please contact us since peak torque would change.
(※2) Please ask if there is a speed you prefer.
(※3) Rated armature current is the value measured with the standard heat sink attaxhed to the motor at an ambient temperature of 40℃ .
(※4) The resolution can be changed among 500,000, 640,000, 1,000,000, 1,280,000, 2,500,000, and 2,560,000.

Cable options

Model Connection
CN1 cable(4.2)1M-TE Between power and driver(1m)
CN2 bent cable(4.2)0.7M Motor cable:Extension between motor and driver (Total1m)
CN2 bent cable(4.2)2.7M Motor cable:Extension between Motor and Driver(Total3m)
CN2 bent cable(4.2)4.7M Motor cable:Extension between motor and driver(Total5m)
CN3 bent cable(4.2)0.7M Encoder cable : Extension between motor and driver(Total1m)
CN3 bent cable(4.2)2.7M Encoder cable : Extension between motor and driver(Total3m)
CN3 bent cable(4.2)4.7M Encoder cable : Extension between motor and driver(Total5m)
CN5 cable USB2.0 cable with ferrite core : between PC and driver

※Please prepare the CN4 connector cable of the MC-200 by the user.
※MC-200C CN1/CN4 connector cable and CN2/CN3 conversion connector cable are included.

Example of the use







After-sales service

How to request repair

About the Warranty coverage

In the event of a failure due to our responsibility, we can repair and replace the product for free within the warranty period.
However, The warranty is by the product,so expenses with parts replacement and compensation for damages(etc) is out of the application of our warranty.

About the case where the warranty does not apply

As a result of inspection, if it is found that the product is not a malfunction but handling or an external influence, you will be charged even during the warranty period.


The warranty period

Within 1 year after the start of use (however, within 1.5 years after delivery).