RKF
The RKF series is a compact servo actuator. It combines a zero backlash Harmonic Drive® gear and an AC servo motor. The RKF Series is designed to operate with a wide range of third party drives as well as Harmonic Drive LLC’s REL Series, and RTL Series.
Key Features:
- Zero backlash
- Compact and lightweight
- High power
- Incremental encoder
- High positioning and high rotational accuracy
Catalog
DXF CAD Files
3D CAD Files
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Ordering Code
| RKF | - | 20 | A | - | 50 | - | E | 200 | - | SP |
| 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| 1. | Model |
RKF series (Shaft output)
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| 2. | Size |
20, 25, 32
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| 3. | Version Symbol |
A
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| 4. | Reduction ratio |
50,100
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| 5. | Encoder type |
E - Incremental encoder
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| 6. | Encoder resolution |
200 - 2000p/rev
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| 7. | Special specification |
Blank - Standard product |
Specifications
| Item / Model | RKF-20A | RKF-25A | RKF-32A | ||||
| Gear Ratio | 50 | 100 | 50 | 100 | 50 | 100 | |
| Rated Output | W | 120 | 111 | 180 | 190 | 310 | 310 |
| Rated Torque | Nm | 19 | 35 | 29 | 59 | 49 | 98 |
| In lb | 168 | 310 | 257 | 522 | 434 | 867 | |
| Rated Rotational Speed | rpm | 60 | 30 | 60 | 30 | 60 | 30 |
| Max.Momentary Torque | Nm | 56 | 82 | 98 | 157 | 220 | 330 |
| In lb | 496 | 726 | 867 | 1389 | 1947 | 2921 | |
| Moment of Inertia | ( GD2/4) kg.m2 | 0.1 | 0.39 | 0.19 | 0.77 | 0.67 | 2.7 |
| (J) kgfcm2 | 1.0 | 4.0 | 2.0 | 7.9 | 6.9 | 27 | |
| One-way Positioning accuracy | arc.sec | 90 | 90 | 90 | |||
| Encoder resolution of output shaft with quadrature *1 |
counts/ revolution |
400,000 | 800,000 | 400,000 | 800,000 | 400,000 | 800,000 |
| Mass | kg | 2.9 | 5.0 | 9.5 | |||
| Servo Drive Combinations *2 | AC200 | RTL-230-18, REL-230-18 | |||||
| HA-520-1R-200 | HA-520-3-200 | HA-655-4B-200 | |||||
| HA-655-2B-200 | HA-655-2B-200 | ||||||
*1: Quad encoder resolution is calculated by (Motor shaft resolution) x4x (Reduction ratio)
*2: HA-520 does only position control. HA-655 does speed control and position control.
Product Drawing
RKF-20A, 25A, 32A
Dimensions
Unit: mm
|
Model |
A |
B |
C |
D±1 |
øE h7 |
F |
G |
Mass |
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RKF-20A |
180 |
20 |
64 |
96 |
100 |
60 |
108 |
2.9 |
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RKF-25A |
215.5 |
22 |
69.5 |
124 |
120 |
60 |
130 |
5.0 |
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RKF-32A |
241 |
25.5 |
87.5 |
128 |
155 |
80 |
165 |
9.5 |
Please confirm dimensions and specifications with the drawing issued by Harmonic Drive LLC.
