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Technical Specifications
Last Updated: 2026-09-16
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
Below Average
|
| 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
Below Average
|
| Physical | |
| Weight | 1.87 oz53.0 gAbove Average |
| 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 |
| Drivetrain | |
| Motor Type | Coreless |
| Gears | Plastic |
| Gear Spline/Teeth | 23 T estimate |
| Rotation Mode | Positional |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Electrical & Environment | |
| Operating Voltage | 4.8–6 V |
| Connectivity | |
| Connector | JR (Universal) |
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 | Below Average Stronger than 25% of 1060 Digital Standard servos at 4.8V |
| Speed | Below Average Faster than 23% of 1045 Digital Standard servos at 4.8V |
| Weight | Above Average Lighter than 81% of 1880 Digital Standard servos |
Performance Analysis
| Shaft Power | 1.28–1.69 W |
| Power Density | 1.074 W/in³ More power-dense than 20% of 1768 Digital Standard servos |
| Torque Density | 2.3585 oz-in/g Stronger than 29% of 1053 Digital Standard servos |
| Torque-to-Volume Ratio | 79.58 oz-in/in³ Denser torque than 32% of 1058 Digital Standard servos |
| Speed-to-Weight | 0.10482 (1/sec·g) Faster than 41% of 1038 Digital Standard servos |
| Speed-Torque Trade-off | 22.50 Better balanced than 40% of 1034 Digital Standard servos |
| Torque Gain per Volt | 14.00%/V More voltage-responsive (torque) than 40% of 873 Digital Standard servos |
| Speed Gain per Volt | 10.43%/V More voltage-responsive (speed) than 22% of 874 Digital Standard servos |
| Voltage Range Width | 1.2 V Wider voltage range than 21% of 1560 Digital Standard servos |
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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