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KDU Series Direct Drive Motor
List of Features
KDU Series is a super high resolution and high precision Direct Drive Motor.
Available in 2 models depending on output torque.
- Resolution: 11,840,000 pulses per revolution
- High Precision 10 arc-sec: Absolute position accuracy.
Repeatability: ± 0.5 arc-sec.
- Stopping stability : Stopping stability in Servo lock model : Less than ± 2 pulses (±.22 arc-sec.)
- High Torque : KDU-13S : 7 Nm
KDU-13W: 15 Nm
- Large Hollow Shaft:
Motor outside diameter : 130 mm
Hollow opening diameter : 50 mm
- Mechanical accuracy: Run out on output side 2µm
Used for
Semiconductor Manufacturing Systems
FPD Manufacturing Equipment
Optical Machines
Measurement, Analytical and Test Systems
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Model Ordering Code
The Direct Drive Motor KDU Series is a system that function in combination with the HA-720 AC servo driver.
The following table gives guidance how to find a system model name and symbol.
| KDU - 13 - S |
D - |
SP |
| 1 |
2 |
3 |
| 1. |
Model: |
Direct Drive Motor, KDU Series
KDU - 13 - S : KDU-13-SB-E08-100
KDU - 13 - W : KDU-13-WB-E08-100
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| 2. |
System: |
Combination with AC servo driver, HA-720-5-100
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| 3. |
Specification Symbol: |
No mark : Standard item
SP : Customized specification
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List of Ratings
Item/Model |
KDU-13SB |
KDU-13WB |
Maximum torque *2 |
Nm |
7.0Nm (62.0 In.lb) |
15.0Nm(132.8 In.lb) |
Maximum rotational speed |
rpm |
180 |
160 |
Torque constant |
Nm/A |
3.1Nm/A (26.9 In.lb/A) |
6.5Nm/A (56.4 In.lb/A) |
Input power supply voltage |
V |
AC100 |
Moment of inertia |
kg•m1 |
0.0047 |
0.0065 |
Moment stiffness |
Nm/rad |
2.4X105 |
Motor position sensor |
pulse/rev |
Incremental encoder
Square wave : phase A and B: 11,840,000
Pulse signal of phase Z
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Repeatability positioning precision *3 |
arc sec |
±0.5 |
Absolute positioning accuracy *3 |
arc sec |
10 (Angular position corrected) *4 |
Mass |
kg |
4.0 |
5.0 |
Mounting direction |
- |
Output shaft to face upward |
Combined driver |
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HA-720-5-100 |
CAD Downloads |
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PDF DXF |
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Note1: * The table above shows output values of output shaft.
Note2: * The values in the table above are obtained when connected to HA-720 servo driver.
Note3: * The repeatability positioning precision and Absolute positioning accuracy repeatability
are the values measured in an environment of 23 ±0.3°C in temperature, 50% RH in humidity
and with output shaft facing upward in mounting direction.
Please contact Harmonic Drive LLC, if you inquire to use with different environmental condition.
Note4: * Value after angular position of the HA-720 servo driver is corrected. |
Product Drawing
List of Dimensions
Unit: mm
Motor type |
KDU-13SA |
KDU-13WA |
A |
42 |
56 |
L |
80 |
94 |
| Please confirm dimensions and specification with the drawing issued by Harmonic Drive LLC. |
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