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
3D CAD Files
Don't see what you need or not sure where to start? Our team can help you find the right actuator for your application! |
Ordering Code
RKF | - | 20 | A | - | 50 | - | E | 200 | - | SP |
1 | 2 | 3 | 4 | 5 | 6 | 7 |
1. | Model |
RKF series (Shaft output)
|
2. | Size |
20, 25, 32
|
3. | Version Symbol |
A
|
4. | Reduction ratio |
50,100
|
5. | Encoder type |
E - Incremental encoder
|
6. | Encoder resolution |
200 - 2000p/rev
|
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 |
RKF-20A |
180 |
20 |
64 |
96 |
100 |
60 |
108 |
2.9 |
RKF-25A |
215.5 |
22 |
69.5 |
124 |
120 |
60 |
130 |
5.0 |
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.