DFRobot 45kg Coreless Waterproof Metal Gear Digital Servo (180°)

This 45kg coreless digital servo is built for robotics and RC work that needs high torque and weather resistance: robot arms, rovers, robot cars and boats. An aluminium shell, all-metal gears and IP67 sealing protect the internals, and it takes standard PWM signals from any receiver, flight controller or microcontroller.

Key features

• 35kg.cm at 6V, rising to 45kg.cm at 8.4V

• Coreless motor with MOS driver for quick response: 0.11 s/60° at 8.4V

• IP67 waterproof, with a sealed circuit board that also helps dissipate heat

• 180° control range over a 500-2500µs pulse width, with a 2µs dead zone

• Two ball bearings, metal gears and a rated life of over 600,000 cycles

Specifications

• Operating voltage: 6.0-8.4V

• Torque: 35kg.cm at 6V; 45kg.cm at 8.4V

• No-load speed: 0.12 s/60° at 6V; 0.11 s/60° at 8.4V

• No-load current: 300mA at 6V; 450mA at 8.4V

• Load current: 3.1A at 6V; 3.9A at 8.4V

• Control: PWM, 500-2500µs

• Potentiometer: direct drive

• Shell: aluminium

• Size: approx. 40 x 20 x 40.5mm

• Operating temperature: -20 to 60°C

The 6-8.4V window takes a 2S LiPo directly, while a 5V BEC sits below its rated range. Allow about 4A per servo under load when sizing the BEC or supply.