PowerHD PS-5521MG 20 kg-cm Metal Gear Analog Standard Servo
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Prices updated: 14 Oct 2026
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About this product
The PS-5521MG is a high-torque analog standard servo with metal gears and dual ball bearings, designed for robotics, RC and automation projects. It operates at 4.8 V or 6 V and delivers up to 20.32 kg-cm stall torque at 6 V. It uses a JR-type connector with a 265 mm lead and measures about 40.5 x 20.2 x 38 mm.
Specifications
- Type
- Analog standard servo
- Gears and bearings
- Metal gears, dual ball bearings (2BB)
- Operating voltage
- 4.8 V / 6 V
- Stall torque
- 17.25 kg-cm at 4.8 V; 20.32 kg-cm at 6 V
- Speed
- 0.18 s/60° at 4.8 V; 0.16 s/60° at 6 V
- Weight
- 55.6 g
- Connector
- JR, 265 mm lead
Frequently asked questions
Can I power this servo directly from an Arduino 5V pin?
The servo is rated for 4.8 V to 6 V, and under load it can draw more current than a board's 5 V pin should supply. Use a separate 6 V supply with a common ground shared with the Arduino.
Is the connector compatible with standard servo headers?
The servo uses a JR-type connector with a 265 mm lead, which fits JR-style three-pin servo headers. Match the signal, power and ground pins to your receiver or controller before connecting.
