The MKS HV6120 wing servo is the latest servo from MKS aimed at the F5J and light large glider market. It has mounting lugs suitable for wing (or tail surface) mounting. It is more powerful, faster, and considerably more robust than the DS6100 and HV6100 servos, and operates over a wide voltage range. It is rated for operation down to 3.5V making it safe for use on 1S LiPo batteries and up to 8.4V making it fine on 2S LiPo batteries also.

The HV6120 is ideal for F5J, F5D, and all small models that require excellent precision, massive torque, and adequate speed. It is possibly the best 8 mm thick servo produced so far. It looks beautiful and with a torque of up to 5.4 Kg cm it is amazingly powerful.

The MKS hallmark CNC aluminium alloy case adds rigidity and crash resistance to the servo. The gears are pre-loaded to remove all slop or backlash from the geartrain, allowing a level of precision unequalled by other manufacturers.

The extreme reliability and performance of these servos also makes them very suitable for use in film and motion picture industry special effect departments. They are also used in robotic, drone, UAV, UAS, academic research, military, and other highly demanding applications.

(c) 2021 Neil Stainton


MKS HV6120 Wing Servo Specifications
Body dimensions 25.0 mm wide x 8.0 mm thick x 23.0 mm high 0.98" wide x 0.31" thick x 0.91" high
Max dimensions 29.0 mm wide x 8.0 mm thick x 29.0 mm high 1.14" wide x 0.31" thick x 1.14" high
Stall torque (3.7V) 2.5 Kg.cm 35 oz.in
Stall torque (4.8V) 3.3 Kg.cm 46 oz.in
Stall torque (8.2V) 5.4 Kg.cm 75 oz.in
Weight 11 g 0.39 oz
Lead length 10 cm 3.9 in
Operating speed (3.7V) 0.18 sec/60°
Operating speed (4.8V) 0.14 sec/60°
Operating speed (8.2V) 0.08 sec/60°
Operating voltage 3.5V to 8.4V
Operating temperature 0 to 50 °C
Bearings 2 ballrace
Gear material 7075 Chrome-Titanium alloy
Case material 6061 Aluminum alloy
Motor type Coreless DC motor
Working frequency 333 Hz
Dead band/resolution 1 µs
Pulse width for ± 60º (L) 920 µs - (0°) 1520 µs- (R) 2120 µs µs
Digital Yes
Programmable No
Position feedback Potentiometer
Supplied accessories 2 large & 1 small plastic output arms, 1 output pulley, 1 arm retaining screw, 6 mounting screws
Optional accessories MKS Small Metal Servo Output Arms, Ply Frame for MKS HV6120, Integrated Drive System/Mono for MKS HV6120, Integrated Drive System Foam for MKS HV6120