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Technical Specifications
Last Updated: 2026-10-26
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | 902-0121-000 |
| Category | Robotics |
| Performance | |
| Torque |
14.8V
438.96 oz-in
31.61 kg-cm
3.1 N-m
12.0V
354.00 oz-in
25.49 kg-cm
2.5 N-m
11.1V
311.52 oz-in
22.43 kg-cm
2.2 N-m
|
| Speed |
14.8V
0.16 sec/60°
372.7 deg/s
62.1 RPM
12.0V
0.20 sec/60°
300.0 deg/s
50.0 RPM
11.1V
0.22 sec/60°
276.5 deg/s
46.1 RPM
|
| Running Current |
12.0V0.070 A70 mA |
| Stall Current | 1.2–1.5 A1200–1500 mAAbove Average |
| Radial Load | 40.0 N |
| Physical | |
| Weight | 2.89 oz82.0 gAverage |
| Shape | Boxed |
| Dimensions |
L 1.339 in W 1.122 in H 1.831 in L 34.0 mm W 28.5 mm H 46.5 mm |
| Case Material | Metal / Plastic |
| Drivetrain | |
| Motor Type | Coreless |
| Gears | Metal |
| Gear Ratio | 212.6:1 |
| Rotation Mode | Multi-turn |
| Backlash | 0.250° |
| Control & Signal | |
| Modulation | Digital |
| Direction | Bidirectional |
| Rotational Range | 360° |
| Angle Sensor | Contactless Absolute Encoder |
| Control System | RS-485 / PWM |
| Programmable | Yes |
| Resolution | 4,096 pulse/rev |
| MCU | ARM CORTEX-M3 |
| Operating Modes | Current, Velocity, Position, Extended Position (Multi-turn), Current-based Position, PWM (Voltage) |
| Electrical & Environment | |
| Operating Voltage | 10–14.8 V |
| Temperature | -5–80 °C23–176 °F |
| Certification | FCC |
| Idle Current | 0.040 A40 mA |
| Connectivity | |
| Connector | JST |
| Wire Length | 180 mm7.09 in |
| Baud Rate | 9.6 Kbps–4.5 Mbps |
| Origin | |
| Country of Origin | South Korea |
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
| Weight | Average Lighter than 49% of 145 Digital Large servos |
| Stall Current | Above Average Lower draw than 73% of 92 Digital Large servos |
Performance Analysis
| Shaft Power | 2.65–5.04 W |
| Power Density | 1.833 W/in³ More power-dense than 67% of 112 Digital Large servos |
| Torque Density | 3.7990 oz-in/g |
| Torque-to-Volume Ratio | 113.25 oz-in/in³ |
| Speed-to-Weight | 0.05620 (1/sec·g) |
| Speed-Torque Trade-off | 67.60 |
| Current-per-Torque Ratio | 0.0048 A/oz-in |
| Idle-to-Running Current Ratio | 0.571 |
| No-Load vs Stall Current Spread | 21.43 |
| Voltage Range Width | 4.8 V Wider voltage range than 69% of 124 Digital Large servos |
| Backlash-to-Range Ratio | 0.00069 Tighter backlash than 58% of 25 Digital Large servos |
Notes
High-durability robotic servo featuring a coreless Maxon motor, full metal gears, and aluminum housing. Supports advanced control modes including current and PWM control with a 12-bit absolute encoder.
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