Hitec HS-645MG Servo Motor

HitecSKU: RB-Hit-29
Manufacturer #: 32645S

Price  :
Sale price ¥6,014

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Stock  :
In stock, 15 units

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  • Top Selling High Torque Metal Gear Servo
  • Strong Three-Pole Ferrite Motor
  • Heavy Duty Metal Gear Train Featuring our Revolutionary Metal/Plastic First Gear (MP Gear)
  • Dual Ball Bearing-Supported Output Shaft

The HS-645MG Servo Motor 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 HS-645MG offers one of the strongest gear trains available in any servo.

  • 1 x HS-645MG Servo Motor
  • 1.59 x 0.77 x 1.48 in.
  • Operating Voltage Range (Volts DC): 4.8V ~ 6.0V
  • Speed (Second @ 60°): 0.24 ~ 0.20
  • Maximum Torque Range oz. / in.: 107 ~ 133
  • 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


  • Weight (Ounces): 1.94
  • 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
  • Dust / Water Resistance: N / A
  • Connector Gauge (AWG) / Strand Count: 22 / 60

Radio Control Applications

  • Parkflyer: N / A
  • Sport Plane: 12-15 lbs.
  • Sailplane: 2 meters and up
  • 3D Performance: 12-15 lbs.
  • Scale: 12-15 lbs.
  • Electric Helicopter: N / A
  • Gas Helicopter: N / A
  • On Road: 1/10th
  • Monster Truck: 1/10th
  • Buggies: 1/10th
  • Truggies: 1/10th

Customer Reviews

Based on 19 reviews
Ainul R
High Torque,Easy to Drive, Fast Shipping

Thank you for fast process and ship my order

Powerful servo - but you need to buy separate horn

This is has a high torque for its size and works well with the hexapod designs. However, you will need to buy a standard servo horn to use.

Good strong servo

These are probably the best high torque servos out there

GREAT product

no complains

Excellent servo

I bought the Lynxmotion Large Pan / Tilt Kit - No Servos (Black) with the suggested HS-805BB Giant Scale Servo Motor and HS-645MG Servo Motor. They work great together. I am using them as the pan tilt mechanism on a HO scale self unloading coal ship.

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