The powerful HS-645MG is one of Hitec’s most popular servos. It’s the perfect choice for those larger sport planes or monster trucks and buggies requiring a durable high torque servo. Featuring our unique M/P and metal gear train technology, the HS645MG offers one of the strongest gear trains available in any servo.

HS-645MG Servo Specifications

Performance Specifications

Operating Voltage Range (Volts DC) 4.8V ~ 6.0V

Speed (Second @ 60°) 0.24 ~ 0.20

Maximum Torque Range kg. / cm. 7.7 ~ 9.6

Current Draw at Idle 9.1 mA

No Load Operating Current Draw 450 mA

Stall Current Draw 2,500 mA

Dead Band Width 8 µs

Physical Specifications

Dimensions (mm) 40.6 x 19.8 x 37.8

Weight (Gram) 55.2

Circuit Type HT7003 Analog SMT

Motor Type 3 Pole Metal Brush Ferrite

Gear Material Metal

Bearing Type Dual Ball Bearing

Output Shaft (type / Ømm) Standard 24

Case Material Plastic

Connector Gauge (AWG) / Strand Count 22 / 60

Radio Control Applications

Sport Plane 12-15 lbs.

Sailplane 2 meters and up

3D Performance 12-15 lbs.

Scale 12-15 lbs.

On Road 1/10th

Monster Truck 1/10th

Buggies 1/10th

Truggies 1/10th

Short Course / Truck 1/10th

Crawlers 1/12th

Sail Boat =>1M+ & Scale

Power Boat 1/10th