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Technical Specifications
Last Updated: 2026-09-14
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Identity
Performance
Physical
Drivetrain
Control & Signal
Electrical & Environment
Connectivity
Origin
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Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | JRPS791 |
| Category | Hobby |
| Discontinued | Yes |
| Performance | |
| Torque |
4.8V260.00 oz-in18.72 kg-cm1.8 N-m |
| Speed |
4.8V1.55 sec/60°38.7 deg/s6.5 RPM |
| Running Current | (add) |
| Stall Current | (add) |
| Physical | |
| Weight | 1.60 oz45.4 g |
| Dimensions |
L 1.73 in W 0.88 in H 0.93 in L 43.9 mm W 22.4 mm H 23.6 mm |
| Case Material | (add) |
| Drivetrain | |
| Motor Type | Coreless |
| Motor Drive | (add) |
| Gears | Metal |
| Gear Spline/Teeth | 23 T estimate |
| Shaft Size | (add) |
| Rotation Mode | (add) |
| Rotation/Support | Bushing |
| Backlash | (add) |
| Control & Signal | |
| Modulation | Analog |
| Direction | (add) |
| Rotational Range | (add) |
| Mechanical Limit | (add) |
| Pulse Cycle | (add) |
| Pulse Width | (add) |
| Neutral Position | (add) |
| Dead Band | (add) |
| Refresh Rate | (add) |
| Angle Sensor | Potentiometer |
| Control System | PWM |
| Programmable | No |
| Signal Voltage | (add) |
| Electrical & Environment | |
| Operating Voltage | 4.8–4.8 V |
| Power Source | External |
| Regulator Type | Direct |
| Temperature | (add) |
| Water Rating | (add) |
| Certification | (add) |
| Idle Current | (add) |
| Connectivity | |
| Connector | JR (Universal) |
| Wire Length | (add) |
| Origin | |
| Country of Origin | (add) |
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.
Performance Analysis
| Shaft Power | 0.31 W |
| Torque Density | 5.7269 oz-in/g Stronger than 83% of the 37 JR servos in the database |
| Torque-to-Volume Ratio | 183.64 oz-in/in³ Denser torque than 83% of the 37 JR servos in the database |
| Power Density | 0.219 W/in³ More power-dense than 12% of the 51 Analog Low Profile servos in the database |
| Speed-to-Weight | 0.01421 (1/sec·g) Faster than 0% of the 38 JR servos in the database |
| Speed-Torque Trade-off | 403.10 1st-highest speed-torque trade-off of 37 JR servos |
| Voltage Range Width | 0.0 V Wider voltage range than 0% of the 26 Analog Low Profile servos in the database |
Notes
This servo only operates on 4.8V.
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Reviews (1)
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jerry mak
April 24, 2018Application(s): retract servo
Comments: works sometimes when new but quits after a short time I know I bought 4 of them. their no good