CHA HV120H Wing Servo

Engineered for precision, power, and performance, the CHA HV120H is a compact 12mm HV servo designed for demanding model aircraft applications. With a holding force of 25 kg, it delivers exceptional strength in a slim profile - perfect for tight installations and large models alike.

Unlike conventional servos that use fragile potentiometers, the CHA HV120 series is equipped with a reliable Hall Effect sensor, ensuring superior durability and long-term accuracy. The robust internal design features steel gears, dual ball bearings, and a rugged aluminium case for maximum endurance and performance.

This horizontal lug version is tailor-made for wing installations, allowing for slimmer airfoils and improved aerodynamics. A unique third mounting lug beside the motor ensures easy and secure fitting, even under small servo hatches.

With a 6mm T25 standard spline, it supports a wide variety of Futaba-compatible servo arms—offering versatility for all your setup needs.

The CHA HV120H is perfect for:

• Big gliders - mounting in wings and tail surfaces
• Large electric and gas-powered aircraft
• High-performance jets

If you're building for speed, precision, and space efficiency, the CHA HV120H is your ultimate wing servo solution.


Servo Data
Dimensions 30 x 12 x 35 mm
Weight 1.30 oz (37 g)
Rated Voltage DC 7.4V
Voltage Range DC 4.8 – 8.4V
Output Shaft Spline 25T, 0.236 in (6 mm)
Position sensor Contactless / Hall sensor
Motor 4 Pole Brushless
Working Frequency 1520µs/333Hz
Pulse Range 500 µs – 2500 µs
Programmable Yes

Material
Case Material Aluminium
Gear Set Material Steel

Holding Torque
Holding Torque @ 4.8V 249.97 oz·in (18.0 kg·cm)
Holding Torque @ 6.0V 305.52 oz·in (22.0 kg·cm)
Holding Torque @ 7.4V 347.18 oz·in (25.0 kg·cm)
Holding Torque @ 8.4V 388.84 oz·in (28.0 kg·cm)
Output Torque
Output Torque @ 4.8V 138.87 oz·in (10.0 kg·cm)
Output Torque @ 6.0V 166.64 oz·in (12.0 kg·cm)
Output Torque @ 7.4V 208.31 oz·in (15.0 kg·cm)
Output Torque @ 8.4V 249.97 oz·in (18.0 kg·cm)

No-load Speed
No-load Speed @ 4.8V 0.16sec/60°
No-load Speed @ 6.0V 0.13sec/60° @ 6.0 V
No-load Speed @ 7.4V 0.11sec/60°
No-load Speed @ 8.4V 0.09sec/60°