FEETECH FT83 Series Servo Motor
FEETECH FT83 Series Servo Motor
The FT83 Series high-performance digital servos — comprising the FT830BL, FT8346M, and FT846BL — are engineered with premium full-aluminum metal cases for optimal thermal management, ultra-durable steel gears with a 1/378 gear ratio, dual ball bearings, and a standard 25T/5.9mm horn gear spline. Optimized for advanced robotics, heavy-duty industrial automation, and professional RC platforms, this series offers elite motor configurations: the FT830BL and FT846BL feature highly efficient brushless motors (operating at 6V–7.4V and 4V–8.4V respectively), while the FT8346M utilizes a responsive coreless motor (4V–8.4V range). Delivering immense power, the series achieves a peak stall torque of 30kg.cm for the FT830BL, and a massive 40kg.cm for both the FT8346M and FT846BL at 7.4V, paired with rapid no-load speeds ranging from 0.135sec/60° up to 0.22sec/60°. Driven by standard pulse width modulation (500–2500 µsec) via a digital comparator amplifier, the FT830BL and FT846BL provide a precise 180° running degree, whereas the FT8346M delivers an endless 360° continuous rotation. With no mechanical limit angles, a stable neutral position at 1500 µsec, counterclockwise rotation, a narrow dead band width of ≤4 µsec, and a 30CM connector wire, this series provides a robust, versatile, and high-torque motion control solution for closed-loop intelligent systems.
Common use cases: Heavy-duty humanoid robot arm and shoulder joints, professional RC car and crawler steering, UAV payload gimbal pan/tilt axis, industrial automation end-effectors, and competition robot actuators requiring 30–40kg.cm torque with brushless or coreless motor durability.
| PRODUCT PARAMETERS | |||
| Model | FT830BL | FT8346M | FT846BL |
| Product Name | PWM Digital 180° Metal Case Steel Gear Brushless Servo | 7.4V 40kg.cm 360° Metal Case Steel Gear Coreless Servo | 7.4V 40kg.cm 180° Metal Case Steel Gear Brushless Servo |
| Storage Temperature Range | -30℃~80℃ | -30℃~80℃ | -30℃~80℃ |
| Operating Temperature Range | -20℃~60℃ | -20℃~60℃ | -20℃~60℃ |
| Size | A:40mm B:20mm C:38.95mm | A:40mm B:20mm C:43.05mm | A:40mm B:20mm C:38mm |
| Weight | 84.5±1g | 91.5±1g | 91.5±1g |
| Gear type | Steel | Steel | Steel |
| Limit angle | NO limit | NO limit | NO limit |
| Bearing | Ball bearings | Ball bearings | Ball bearings |
| Horn gear spline | 25T/5.9mm | 25T/5.9mm | 25T/5.9mm |
| Gear Ratio | 1/378 | 1/378 | 1/378 |
| Case | Aluminum | Aluminum | Aluminum |
| Connector wire | 30CM | 30CM | 30CM |
| Motor | Brushless Motor | Coreless Motor | Brushless Motor |
| Operating Voltage Range | 6V–7.4V | 4V–8.4V | 4V–8.4V |
| Idle current (at stopped) | 6mA@7.4V | 6mA@7.4V | 6mA@7.4V |
| No load speed | 0.135sec/60°@7.4V | 0.22sec/60°@7.4V | 0.151sec/60°@7.4V |
| Running current (at no load) | 180mA@7.4V | 300mA@7.4V | 300mA@7.4V |
| Peak stall torque | 30kg.cm@7.4V | 40kg.cm@7.4V | 40kg.cm@7.4V |
| Rated torque | 10kg.cm@7.4V | 13.5kg.cm@7.4V | 13.5kg.cm@7.4V |
| Stall current | 4.2A@7.4V | 3.1A@7.4V | 4.4A@7.4V |
| Command signal | Pulse width modulation | Pulse width modulation | Pulse width modulation |
| Amplifier type | Digital comparator | Digital comparator | Digital comparator |
| Pulse width range | 500~2500 µsec | 500~2500 µsec | 500~2500 µsec |
| Stop position | 1500 µsec | 1500 µsec | 1500 µsec |
| Running degree | 180° (at 500→2500µsec) | 360° (at 500→2500µsec) | 180° (at 500→2500µsec) |
| Dead band width | ≤4 µsec | ≤4 µsec | ≤4 µsec |
| Rotating direction | Counterclockwise (at 1500→2000 µsec) | Counterclockwise (at 1500→2000 µsec) | Counterclockwise (at 1500→2000 µsec) |








