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Hitec HS-645MG High Torque, Metal Gear Premium Sport Servo


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

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$33.00 tax excl.

  • Features:

    • 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


    • Metal Gear Set
    • Metal / Plastic 1st Gear Set
    • Plastic Case Set
    • Applicable Horns

    Performance Specifications

    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
    Physical Specifications
    Dimensions (Inches) 1.59 x 0.77 x 1.48
    Dimensions (Metric) 40.6 x 19.8 x 37.8
    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

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