Harmonic Drive LLC | 247 Lynnfield St. Peabody, MA 01960 | 800-921-3332
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RSF-Supermini

These extremely small servo actuators utilize zero backlash Harmonic Drive® precision gears, a brushless servo motor and an incremental encoder to deliver precision motion control. The RSF Supermini series is designed to operate with a wide range of third party drivers as well as Harmonic Drive LLC’s DCJ Series, DDP Series, DEP Series, and HA680 drivers. The units are small enough to fit inside the finger of a robotic hand.

Key Features:

  • Compact, lightweight
  • High output torque
  • High positional accuracy
  • RSF-5B is available with an optional brake

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Ordering Code

RSF - 5B - 50 - US 050 - C - SP
1 2 3 4 5 6 7

1. Model

: RSF-Supermini Series

2. Size / Version

: 3C, 5B

3. Gear Ratio

: 30, 50, 100

4. Encoder Type

: US - Incremental encoder

5. Encoder Resolution

: 020 - 200 line (size 3C)
: 050 - 500 line (size 5B)

6. Options

: C - Standard - with connectors
: BC - With Brake and connectors (available for 5B only)

7. Special specification

: Blank - Standard product
: SP____ - Special specification code

Specifications

Item / Model RSF-3C RSF-5B
Gear Ratio 30 50 100 30 50 100
Rated Torque Nm 0.03 0.07 0.11 0.18 0.29 0.44
lb-in 0.27 0.62 0.97 1.6 2.6 3.9
Rated Speed rpm 150 90 45 150 90 45
Stall Torque Nm 0.04 0.08 0.12 0.28 0.44 0.65
lb-in 0.35 0.71 1.06 2.5 3.9 5.8
Maximum Torque Nm 0.13 0.21 0.3 0.5 0.9 1.4
lb-in 1.15 1.86 2.66 4.4 8 12.4
Moment of Inertia (GD2/4) *1 Standard (kgm2) 0.11x10-4 0.29x10-4 1.17x10-4 0.66x10-4 1.83x10-4 7.31x10-4
With Brake (kgm2) None None None 0.11x10-3 0.31x10-3 1.23x10-3
Encoder Resolution *2 Pulses/Rotation 24,000 40,000 80,000 60,000 100,000 200,000
One-way Positioning accuracy arc/sec 600 600 600 240 180 180
Number of Poles 8 8
Mass (g) Without Brake(g) 31.0 (except clamp filter) 66.0 (except clamp filter)
With Brake(g) - 86.0 (except clamp filter)
Recommended Drivers 24V DC DCJ-055-09, DDP-090-09, DEP-090-09
24V DC HA-680-4B-24 HA-680-4B-24
CAD Downloads

PDF DXF

PDF DXF

*1 – Values represent the inertia at the output shaft of the actuator
*2 – Resolution = (encoder resolution) x 4 x (gear reduction ratio)

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