HOOYIJ 2-Pack DS3240MG: 40KG Digital RC Servo, 270° Travel, Waterproof Full Metal Gear

Meet the HOOYIJ DS3240MG Servo Pack

Designed for serious RC builds, the HOOYIJ DS3240MG delivers robust, precise control in a compact, metal-bodied servo. This 2-pack provides dependable performance for dual-servo configurations—whether you’re steering a crawler, controlling a winch, or actuating a robotic arm. Built to endure rough terrain and high-input demands, these digital servos balance power with fine, repeatable response.

Inside a sealed housing, stainless steel gears ride on a high-resolution digital chipset. The CNC aluminum middle shell strengthens rigidity while aiding heat dissipation, so you can push through long sessions without overheating. Waterproof rubber seals help shield the internals from dust and moisture, enabling exploration in challenging conditions with added peace of mind.

Performance highlights

• Voltage range: 4.8–6.8 V, delivering strong performance without excessive power draw.
• Torque: up to 45 kg/cm at 6.8 V (36 kg/cm at 5 V), supporting confident steering and precise control under load.
• Speed: about 0.17 sec/60° at 6.8 V for fast and responsive movements.
• Control range: 270-degree travel, with a 500–2500 µs PWM window requirement for full sweep.
• Construction: full metal gears, stainless steel components, and CNC aluminum shell for durability and heat management.
• Waterproof seals: designed to stand up to wet or dusty environments during outdoor runs.

Compatibility and use cases

These servos fit a wide range of applications, including 1/8 and 1/10 scale Baja crawlers, buggies, trucks, airplanes, helicopters, gliders, boats, and robotic projects. They pair well with PWM-driven controllers and a variety of RC platforms that support extended pulse widths.

What’s in the box

Each pack includes two DS3240MG servos, two adjustable metal servo arms, and a bag of mounting accessories. The arms and hardware are designed to help you tailor leverage and linkage geometry to your specific build.

Practical tips for setup

Plan your wiring to minimize resistance and heat, test the system at low speeds first, and monitor temps during initial runs. Ensure your controller can deliver the full 2500 µs signal to achieve the complete 270° sweep.