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Technical Specifications
Last Updated: 2026-10-09
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | REEFS129 |
| Category | Hobby |
| Performance | |
| Torque |
8.4V
179.00 oz-in
12.89 kg-cm
1.3 N-m
7.4V
159.00 oz-in
11.45 kg-cm
1.1 N-m
6.0V
135.00 oz-in
9.72 kg-cm
1.0 N-m
Top 10%
4.8V
100.00 oz-in
7.20 kg-cm
0.7 N-m
|
| Speed |
8.4V
0.06 sec/60°
1,000.0 deg/s
166.7 RPM
7.4V
0.07 sec/60°
857.1 deg/s
142.9 RPM
6.0V
0.09 sec/60°
666.7 deg/s
111.1 RPM
Above Average
4.8V
0.11 sec/60°
571.4 deg/s
95.2 RPM
|
| Running Current |
8.4V
0.300 A
300 mA
7.4V
0.240 A
240 mA
6.0V
0.180 A
180 mA
Average
4.8V
0.150 A
150 mA
|
| Stall Current | 1.9–3 A1900–3000 mABottom 10% |
| Physical | |
| Weight | 0.74 oz21.0 gBottom 10% |
| Dimensions |
L 0.90 in W 0.47 in H 1.08 in L 22.9 mm W 11.9 mm H 27.4 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Brushless |
| Motor Drive | FET |
| Gears | Metal / Steel |
| Gear Spline/Teeth | 25 T |
| Shaft Size | 4.9 mm |
| Rotation Mode | Continuous |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Rotational Range | 360° |
| Mechanical Limit | No Limit |
| Pulse Cycle | 3 ms |
| Pulse Width | 500-2500 µs |
| Dead Band | 2 µs |
| Refresh Rate | 333 Hz |
| Angle Sensor | Magnetic Encoder |
| Control System | PWM |
| Programmable | Yes |
| Electrical & Environment | |
| Operating Voltage | 6–8.4 V |
| Temperature | -15–70 °C5–158 °F |
| Water Rating | None |
| Connectivity | |
| Connector | JR (Universal) estimate |
| Wire Length | 180 mm7.09 in |
Disclaimer: Most data is sourced from the manufacturer. Some data is sourced from our loyal community and with the help of AI. We aim for accuracy but are not responsible for inaccurate information.
Class Comparison
| Torque | Top 10% Stronger than 98% of 328 Digital Micro servos at 6.0V |
| Speed | Above Average Faster than 66% of 328 Digital Micro servos at 6.0V |
| Weight | Bottom 10% Lighter than 8% of 620 Digital Micro servos |
| Running Current | Average Lower draw than 38% of 53 Digital Micro servos at 6.0V |
| Stall Current | Bottom 10% Lower draw than 6% of 194 Digital Micro servos |
Performance Analysis
| Shaft Power | 1.76–5.52 W |
| Power Density | 12.075 W/in³ More power-dense than 97% of 590 Digital Micro servos |
| Torque Density | 6.4286 oz-in/g Stronger than 97% of 327 Digital Micro servos |
| Torque-to-Volume Ratio | 295.51 oz-in/in³ Denser torque than 98% of 327 Digital Micro servos |
| Speed-to-Weight | 0.52910 (1/sec·g) Faster than 20% of 327 Digital Micro servos |
| Speed-Torque Trade-off | 12.15 Better balanced than 94% of 327 Digital Micro servos |
| Current-per-Torque Ratio | 0.0222 A/oz-in More efficient than 87% of 85 Digital Micro servos |
| No-Load vs Stall Current Spread | 16.67 Narrower current spread than 14% of 36 Digital Micro servos |
| Torque Gain per Volt | 13.58%/V More voltage-responsive (torque) than 30% of 268 Digital Micro servos |
| Speed Gain per Volt | 20.83%/V More voltage-responsive (speed) than 65% of 273 Digital Micro servos |
| Voltage Range Width | 2.4 V Wider voltage range than 56% of 511 Digital Micro servos |
| Dead-Band-to-Pulse-Width Ratio | 0.0010 Finer dead band than 56% of 189 Digital Micro servos |
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