45KG Torque Coreless Waterproof Servo

A high-torque coreless waterproof servo delivering up to 45 kg·cm of stall torque at 8.4V. The all-metal gear train and aluminium shell provide excellent durability, while IP67-rated waterproofing — achieved through laminated circuit boards, waterproof gaskets, and breathable composite sealing — makes it suitable for outdoor and marine robotics applications.

The coreless motor with MOS driver offers smooth, low-jitter operation with reduced noise compared to standard brushed servos. The servo supports 180° rotation within a 500–2500 µs pulse range and features an internal pulse lock function that holds position with a single PPM pulse, reducing processor overhead and extending service life.

Key Features

• 45 kg·cm Stall Torque – At 8.4V (35 kg·cm at 6V)
• IP67 Waterproof – Sealed circuit board with breathable composite waterproof coating
• Coreless Motor – Smooth, responsive operation with low jitter and minimal noise
• All-Metal Gears – Durable metal gear train for high-load applications
• Aluminium Shell – Strong, wear-resistant housing with good heat dissipation
• 180° Rotation – Precise angle control within 500–2500 µs pulse range
• No Internal Limit – Can physically rotate 360° without jamming
• Pulse Lock Function – Holds position with a single PPM pulse, reducing controller workload
• 2 µs Dead Zone – Responsive to small signal changes
• Dual Ball Bearings – Smooth output shaft rotation under load
• 600,000+ Cycle Lifespan – Designed for long-term reliability

Specifications

• Control System: PWM (digital signal processing)
• Working Voltage: 6.0–8.4V
• Max Torque: 35 kg·cm at 6V / 45 kg·cm at 8.4V
• No-Load Speed: 0.12 sec/60° at 6V / 0.11 sec/60° at 8.4V
• No-Load Current: 300 mA at 6V / 450 mA at 8.4V
• Stall Current: 3100 mA at 6V / 3900 mA at 8.4V
• Pulse Width Range: 500–2500 µs
• Rotation Angle: 180°
• Dead Zone: 2 µs
• Motor Type: Coreless (MOS driver)
• Bearings: 2× ball bearings
• Gear Material: All metal
• Shell Material: Aluminium
• Waterproof Rating: IP67
• Operating Temperature: −20°C to +60°C
• Service Life: >600,000 cycles
• Dimensions: 40 × 20 × 40.5 mm

Ideal For

• Multi-joint walking robots and robotic arms
• RC boats and marine robotics
• Outdoor and all-weather robot projects
• DIY robot cars and tracked vehicles
• Professional development and research applications

Package Contents

• 1× 45 kg Torque Coreless Waterproof Servo
• 1× Servo horn and screw pack