3204_0 - Hitec HS-645MG Super Torque Servo


This servo motor has 180° of travel and has a durable metal gear train.

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Product Description


The powerful HS-645MG is one of Hitec’s most popular servos. It’s the perfect choice for those projects requiring a durable high torque servo. Featuring Hitec's unique M/P and metal gear train technology, the HS-645MG offers one of the strongest gear trains available in any RC servo. 

RC servos are hobbyist remote control servos typically used in radio-controlled models, where they provide actuation for various mechanical systems such as the steering of a car, the flaps on a plane, or the rudder of a boat. These servos are not industrial grade and are not recommended for continuous heavy use.




Product Specifications


Motor Properties

Motor Type Limited Rotation Servo
Range of Rotation 180°
Maximum Speed at Rated Voltage 300°/s
Rated Torque 7.7 kg·cm


Physical Properties

Gear Train Material Metal
Bearing Type Dual Ball Bearing
Motor Length 37.7 mm
Motor Width 40.6 mm
Motor Depth 19.8 mm
Wire Length 300 mm
Weight 55.2 g


Electrical Properties

Rated Voltage 5 V DC
Rated Current (on 1061 controller) 230 mA
Rated Current (on 1066 controller) 120 mA
Stall Current (on 1061 controller) 1.8 A
Stall Current (on 1066 controller) 480 mA


These product specifications are based on our own tests using the HS-645motor with the Phidgets 1061 and 1066 motor controllers.


Motor Controllers


The 3204 - Super Torque Servo can be used with the following Phidget motor controllers:

You must use the 1061 if you want to get the maximum torque out of your motor.