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.
  See here for form details


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


Membership registration is required to print or download catalog data.

Click here for Membership registration

Catalog Series Catalog name Japanese English Traditional Chinese
Mechanical Electronic Products General Catalog for Mechanical Electronic Products 2301-26R 2301-26R 2301-26R

Manual / Software

Membership registration is required to print and download technical data.

Click here for Membership registration

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 HPG-R Series is a high end model that achieves both a quiet design and an approximately 30% torque increase over the HPG Series via the adoption of a helical gear.


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.

back to the list

This website uses cookies to improve convenience for users, to statistically understand how the site is used, and for other purposes. Please read the About cookies and, if you consent to the use of cookies, click the "Agree" button.