Discover XQ-Power Servos in Our eBay Store!
Shop Now
Technical Specifications
Last Updated: 2026-07-10
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | R501 |
| Category | Hobby |
| Discontinued | Yes |
| Performance | |
| Torque |
7.4V
166.60 oz-in
12.00 kg-cm
1.2 N-m
6.0V
138.90 oz-in
10.00 kg-cm
1.0 N-m
|
| Speed |
7.4V
0.11 sec/60°
545.5 deg/s
90.9 RPM
6.0V
0.15 sec/60°
400.0 deg/s
66.7 RPM
|
| Physical | |
| Weight | 2.08 oz59.0 gAbove Average |
| Dimensions |
L 1.57 in W 0.79 in H 1.97 in L 39.9 mm W 20.1 mm H 50.0 mm |
| Drivetrain | |
| Motor Type | Brushed |
| Gears | Metal |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Rotational Range | 180° |
| Mechanical Limit | 180° |
| Neutral Position | 1500 µs |
| Dead Band | 1 µs |
| Electrical & Environment | |
| Operating Voltage | 4.8–7.4 V |
| 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 | Above Average Lighter than 85% of 143 Digital Large servos |
Performance Analysis
| Shaft Power | 1.71–2.80 W |
| Power Density | 1.146 W/in³ More power-dense than 36% of 108 Digital Large servos |
| Torque Density | 2.3542 oz-in/g |
| Torque-to-Volume Ratio | 56.85 oz-in/in³ |
| Speed-to-Weight | 0.11299 (1/sec·g) |
| Speed-Torque Trade-off | 20.84 |
| Voltage Range Width | 2.6 V Wider voltage range than 31% of 131 Digital Large servos |
Similar Active Servos
Reviews of Hobby Electronics RB-1188
Be the first to review!