ANNIMOS 150kg.cm Robot Servo Motor 12V High Torque – Steel Gear, 270° PWM Control

Overview

The ANNIMOS RDS51150SG is a rugged, full-metal servo designed for demanding robotics projects. Built for robotic arms, humanoid rigs, PTZ monitoring equipment, and remote-controlled vehicles, it combines durable steel gears with precise PWM control to support bold motion tasks across a range of power supplies.

Premium construction and precision

With a three-pole motor, double bearings, and a CNC aluminum middle shell, this servo balances strength and stability. High-resolution digital control and potentiometer feedback enable smooth, repeatable positioning, even under shifting loads. The steel gear train is engineered for longevity, while keeping noise and heat levels manageable in typical use.

• All-metal steel gear system for durability and long life.
• Stall torque climbs from 150 kg.cm at 10V to 173 kg.cm at 12.6V, supporting heavy joints.
• Speed improves with voltage: 0.24 sec/60° at 10V, 0.21 sec/60° at 12V, 0.19 sec/60° at 12.6V.

Control range and versatility

Control is via PWM (500–2500 μs pulses) with a neutral position at 1500 μs and a travel range of 270°. Operating frequency spans 50–330 Hz with a tight 3 μs dead band. Rotation is CCW when commanded toward the higher pulse range, offering intuitive setup for many robotic joints.

• Wide PWM range supports a variety of controllers and microcontrollers.
• Long lead wire (450 mm) eases wiring in compact or integrated builds.

What’s included and practical notes

Each package ships with hardware to mount quickly: two U-shaped aluminum holders, two discs, and a set of plastic accessories. The design emphasizes good heat dissipation, stable performance, and relatively low noise during normal operation.

Key specs at a glance

• Voltage: 9–12.6 V
• Speed (no load): 0.24/0.21/0.19 sec per 60° at 10/12/12.6 V
• Stall torque: 150–173 kg·cm (depends on voltage)
• Stall current: 7.4–8.3 A
• Idle current: 4–6 mA
• Gear: steel; 3-pole; 18-tooth spline; 357:1 ratio
• Size/Weight: 65 × 30 × 48 mm; 163 g

Note: Actual performance depends on load, temperature, and power supply quality. Adequate cooling and headroom are recommended for sustained use in larger systems.