HS645MG Servo High Torque Metal Gear 104Oz/133Oz 3 Pole Clockwise

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This product has been discontinued and is not available for purchase. Please click on the button below for replacement and/or substitute products.

  • Jameco Part no.: 2124971
  • Manufacturer: Hitec RCD USA
  • Manufacturer no.: HS-645MG
  • HTS code: 8501103000
  • Web Exclusive
# of units Price
1+ $26.95
10+ $23.95

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HS-645MG High Torque Metal Gear Servo

The powerful HS-645MG is 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.


  • Dimensions: 1.59" x 0.77"x 1.48" (40.6 x 19.8 x 37.8mm)
  • Output Shaft Support: Dual Ball Bearings
  • Continuous Rotation Modifiable: Yes
  • Direction w/ Increasing PWM Signal: Clockwise
  • Deadband Width: 8µs
  • Pulse Amplitude: 3-5V
  • Potentiometer Drive: Indirect Drive
  • Motor Type: 3 Pole Ferrite
  • Feedback Style: 5K Potentiometer
  • Gear Type: Straight Cut Spur
  • Gear Material: 3 Metal Gears and 1 Resin Metal Gear
  • Output Shaft Style: 24 tooth (C1) spline
  • No-Load Speed (4.8V): 0.24sec/60°
  • No-Load Speed (6.0V): 0.20sec/60°
  • Stall Torque (4.8V): 106.93 oz/in. (7.7kg.cm)
  • Stall Torque (6.0V): 133.31 oz/in. (9.6kg.cm)
  • Voltage Range: 4.8V - 6.0V
  • Max PWM Signal Range (Standard): 553-2520 sec
  • Travel per µs (out of box): .100°/ sec
  • Max Travel (out of box): 197°
  • Operating Temperature: -20°C to +60°C
  • Current Drain - idle (4.8V): 8.8mA
  • Current Drain - idle (6.0V): 9.1mA
  • Current Drain - no-load (4.8V): 350mA
  • Current Drain - no-load (6V): 450mA
  • Product Weight: 1.94oz. (55.2g)
  • Wire Length: 11.81" (300mm)
  • Wire Gauge: 22AWG

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Specification Value
Motor Drive TypeStandard Servo
No-Load Speed (4.8V)0.24 sec/60°
Stall Torque (4.8V)106.93 oz.in (7.7 kg.cm)
Stall Torque (6.0V)133.31 oz.in (9.6 kg.cm)
Direction Type180 Degree
Current Drain mA- Idle/No Load9.1 / 450
Product Length1.6 in.
Width0.8 in.
Height1.5 in.

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