KDU/HA-770 Series Direct Drive Motor & Servo Driver / High Accuracy Type


A direct drive motor that specializes in super high resolution.
- Super high resolution
    Resolution: 11,840,000 pulses/revolution
- High accuracy
    Absolute position accuracy: 10arc sec
    Repeatability: ±0.5arc sec
- Stopping stability
    Stopping stability during servolock: within ±2 pulse (±0.22arc sec)
- Large hollow diameter
    Motor outer diameter: φ130mm
- Hollow opening diameter: φ50mm

*Product images and CAD images are for reference purposes.
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The KDU Series Direct Drive Motor functions in combination with the HA-770 AC Servo Driver.
The model names for the system and how to read the symbols are explained below.
When ordering, do so using the following model names.

  1. Motor model: KDU Series Direct Drive Motor
    • KDU-13SB = KDU-13SB-E10
    • KDU-13WB = KDU-13WB-E10
  2. System designation: Combined with the HA-770-2 AC Servo Driver
  3. Input voltage:
    • 100 = AC100V
    • 200 = AC200V
  4. Special specification:
    • No description = Standard product
    • SP = Special specification


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Catalog Series Catalog name PDF
Mechanical Electronic Products General Catalog for Mechanical Electronic Products

Manual / Software

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Manual/Software Type/Series Material name/software name Detailed information English
Manual KDU Series KDU Series Direct Drive Motor Manual
Software PSF-770 PSF-770 Servo Parameter Setting Software for HA-770 Series Ver.1.00

Related products

The MMA Series models support connection with MELSERVO-J4 amplifiers. They can be used in SSCNET III/H communication networks.


If you have any comments about this product, please contact us using the inquiry form or the nearest sales office.

The academic and general name of "Harmonic Drive®" is "Strain Wave Gearing", and the name "Harmonic Drive®" is a registered trademark that can only be used for products manufactured and sold by the Company.

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