Hitec HS-645MG Super Torque Servo
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.
- Servo Motor and Controller Primer
- Data Sheet
- Service Manual
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 |
| 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.
The 3204 – Super Torque Servo can be used with the following Phidget motor controllers:
- 1066 – PhidgetAdvancedServo 1-Motor
- 1061 – PhidgetAdvancedServo 8-Motor
You must use the 1061 if you want to get the maximum torque out of your motor.