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Technical Specifications
Last Updated: 2026-09-16
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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 | JRPS8311 |
| Category | Hobby |
| Discontinued | Yes |
| Performance | |
| Torque |
6.0V
146.00 oz-in
10.51 kg-cm
1.0 N-m
4.8V
125.00 oz-in
9.00 kg-cm
0.9 N-m
|
| Speed |
6.0V
0.16 sec/60°
375.0 deg/s
62.5 RPM
4.8V
0.18 sec/60°
333.3 deg/s
55.6 RPM
|
| Running Current | (add) |
| Stall Current | (add) |
| Physical | |
| Weight | 1.87 oz53.0 g |
| Dimensions |
L 1.54 in W 0.75 in H 1.36 in L 39.1 mm W 19.0 mm H 34.5 mm |
| Case Material | (add) |
| Drivetrain | |
| Motor Type | Coreless |
| Motor Drive | (add) |
| Gears | Plastic |
| Gear Spline/Teeth | 23 T estimate |
| Shaft Size | (add) |
| Rotation Mode | Positional |
| Rotation/Support | Dual Bearings |
| Backlash | (add) |
| Control & Signal | |
| Modulation | Digital |
| 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 | (add) |
| Control System | (add) |
| Programmable | (add) |
| Signal Voltage | (add) |
| Electrical & Environment | |
| Operating Voltage | 4.8–6 V |
| Power Source | (add) |
| Regulator Type | (add) |
| 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 | 1.28–1.69 W |
| Torque Density | 2.3585 oz-in/g Stronger than 32% of the 832 Digital Standard servos in the database |
| Torque-to-Volume Ratio | 79.58 oz-in/in³ Denser torque than 34% of the 843 Digital Standard servos in the database |
| Power Density | 1.074 W/in³ More power-dense than 20% of the 1644 Digital Standard servos in the database |
| Speed-to-Weight | 0.10482 (1/sec·g) Faster than 37% of the 821 Digital Standard servos in the database |
| Speed-Torque Trade-off | 22.50 Better balanced than 43% of the 826 Digital Standard servos in the database |
| Torque Gain per Volt | 14.00%/V More voltage-responsive (torque) than 38% of the 673 Digital Standard servos in the database |
| Speed Gain per Volt | 10.43%/V More voltage-responsive (speed) than 22% of the 687 Digital Standard servos in the database |
| Voltage Range Width | 1.2 V Wider voltage range than 22% of the 1269 Digital Standard servos in the database |
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Reviews (2)
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noope
June 6, 2024Application(s): tail rotor servo
Comments: Gears are not plastic they are metal.
Sparky
August 9, 2019Application(s): see below
Comments: Package says Helo only, not recomended for giant scale airplanes