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MKS HV747 Servo - 0.13s 35.5g 15mm

Product Code: MKS-HV747
 (10 reviews)

Price: $99.25

3 in stock
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The MKS HV747 High Torque Servo is designed for glider control surfaces and is perfect for many high performance gas, jet, and electric RC planes. The speed, strength and precision of the HV747 is astonishing. They were used on Mr Kuo Ping Lin's record breaking F3F glider racing flight.

The gear train uses a new type of gear structure, giving negligible backlash and an even longer service life. The MKS HV747 is powered by a substantial 12 mm diameter x 20 mm long high eficiency coreless DC motor, and can operate with supplies from 5.5V to 8.4V, allowing the servo to be operated safely from an unregulated 2S LiPo battery. The feedback mechanism uses a 9mm VR ultra high resolution potentiometer, to ensure the servo moves very accurately, and holds its position 100% when adverse torque is applied.

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.

The MKS HV747 uses a Futaba 25T spline on the output shaft, so a Futaba metal arms can be fitted, if required.

MKS HV747 Servo Specifications
Body dimensions 35.5 mm wide x 15.0 mm thick x 28.5 mm high 1.40" wide x 0.59" thick x 1.12" high
Max dimensions 48.7 mm wide x 15.0 mm thick x 32.8 mm high 1.92" wide x 0.59" thick x 1.29" high
Stall torque (6V) 11.8 164
Stall torque (7.4V) 13.8 192
Stall torque (8.2V) 15 208
Weight 35.5 g 1.25 oz
Lead length 30 cm 11.8 in
Operating speed (6V) 0.17 sec/60°
Operating speed (7.4V) 0.14 sec/60°
Operating speed (8.2V) 0.13 sec/60°
Operating voltage 6V to 8.4V
Operating temperature -10 to 50 °C
Bearings 2 ball races
Gear material Chrome-titanium alloy
Case material CNC machined 6061 aluminium
Motor type 12 x 20 mm coreless motor
Working frequency 333 Hz
Dead band/resolution 1 µs
Pulse width for ± 60º µs
Digital Yes
Programmable No
Position feedback Potentiometer
Supplied accessories 2 HD plastic output arms, 2 arm retaining screws, 4 mounting screws, 4 rubber gromets
Optional accessories Frame with bearing for the MKS HV747

Reviews 10  

 Review by:

Small,m powerfull and smooth operating. Using several of these in elevator stabs to reduce weight

 Review by:

Great Serco

Very good quality servo, smooth genuine 1us deadband and very powerful! Great prompt service from Hyperflight.

 Review by:

Mms servos

Great service very handy as the are on my door step and good price as well and is always very helpful

 Review by:

Mms servos

Great service very handy as the are on my door step and good price as well and is always very helpful

 Review by:


good working

 Review by:

Sehr gutes Servo MKS HV747

gute und Schnelle, Problemlose Lieferung.

Top Produkte sehr guter Händler

 Review by:

This is a very good servo. I use them on the flaps of a 2.5m ds glider.
They are not the fastest servo but in this application where they spend most of their time holding the flap to neutral the compromise for torque is well worth it.

Main challenges was finding aluminium servo arms.

 Review by:


The servo looks very good and it runs smooth and exact positions with low noise in movement and static.The power seems like promised.

 Review by:


The best 15mm servo in the world!!!!!

 Review by:

MKS HV747 servo

Using MKS servos in my high end glider and also in the Blaster 2e with satisfaction, accurate and no slop, the decision to choose MKS again in my new F3A plane was not so hard. Happy that MKS is going the High-Voltage way, as the voltage bandwidth in the older products is to narrow, which increases the requirement of a good powersupply. This has gone now and looking forward to see this new series in action in a couple of weeks.

As usual, Hyperflight's service and delivery are outstanding, prices are good too.

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