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.
|Motor Type||Limited Rotation Servo|
|Range of Rotation||180°|
|Maximum Speed at Rated Voltage||300°/s|
|Rated Torque||7.7 kg·cm|
|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|
|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.
This servo motor needs to be connected to a servo controller board. If you're looking for higher torque, you should select a servo controller with an external power jack so it doesn't have to rely solely on USB power, which is limited. You can plug this servo directly to any of the boards in the list below by matching the color of the wire with the label on the board. Note that some servos have a white data wire and others have a yellow one- in both cases this wire corresponds to the "W" pin on the servo controllers.
|Image||Part Number||Price||Motor Type||Range of Rotation||Rated Torque||Maximum Speed at Rated Voltage|
|3000_1||$12.00||Limited Rotation Servo||180°||3 kg·cm||286°/s|
|3200_0||$52.00||Limited Rotation Servo||180°||19.8 kg·cm||125°/s|
|3201_0||$57.75||Limited Rotation Servo||Approx. 2700°||11 kg·cm||225°/s|
|3202_0||$18.75||Continuous Rotation Servo||—||2.8 kg·cm||44 RPM|
|3203_0||$19.00||Limited Rotation Servo||180°||4.8 kg·cm||272°/s|
|3204_0||$40.50||Limited Rotation Servo||180°||7.7 kg·cm||300°/s|
|3205_1||$11.00||Limited Rotation Servo||175°||2.2 kg·cm||545°/s|
|3207_0||$12.50||Limited Rotation Servo||180°||2.4 kg·cm||375°/s|
|3209_0||$10.00||Limited Rotation Servo||180°||3.5 kg·cm||400°/s|
|3212_0||$18.00||Continuous Rotation Servo||—||12.2 kg·cm||50 RPM|