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HSB-9381TH Servo

  • HSB-9381TH with quarter for scale
  • HSB-9381TH included hardware
  • Shown with Power Absorbing Device, servo extension and receiver.  Servo comes with the Power Absorbing Device but not the receiver or extension.
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With ultra-efficient brushless motors, titanium gear trains, low current consumption and constant output power, the full metal case HSB-9381TH is the perfect match for the most demanding radio control pilots and racers.


  • Programmable 12-Bit PWM Digital Amplifier
  • Custom Long Life Brushless Motor
  • 1M Cycle Long Life Potentiometer
  • Constant Output Torque
  • Wide Operating Voltage (5 ~ 9 Volts DC)
  • Dual Ball Bearing Supported Output Shaft
  • Dust Resistant and Splash Proof Case
  • 25-Tooth Output Spline
  • Hybrid Nylon Reinforced Plastic and Aluminum Case

Programmable Features:

  • End Point Adjustments
  • Direction
  • Fail Safe
  • Dead Band
  • Speed (Slower)
  • Soft Start Rate
  • Data Save / Load
  • Program Reset (From File)
Dimensions 1.57" x 0.79" x 1.50" (40 mm x 20 mm x 38 mm)
Product Weight 2.4 oz (68 g)
Output Shaft Style 25 tooth (H25T) spline
Voltage Range 5.0 V - 9.0 V
No-Load Speed (6.0V) 0.17 sec/60°
No-Load Speed (7.4V) 0.14 sec/60°
Stall Torque (7.4V) 472 oz-in (34
Max PWM Signal Range (Standard) 700-2300 μsec
Travel per µs (out of box) 0.099°/μsec
Travel per µsec (reprogrammed) 0.124°/μsec
Max Travel (out of box) 158°
Max Travel (reprogrammed) 198°
Pulse Amplitude 3-5 V
Operating Temperature -20°C to +60°C
Continuous Rotation Modifiable No
Direction w/ Increasing PWM Signal Clockwise
Deadband Width 1 µs
Motor Type Brushless
Internal Feedback Style 5KΩ Potentiometer
Output Shaft Support Dual Ball Bearing
Gear Type Straight Cut Spur
Gear Material Titanium
Wire Length 13" (330.2 mm)
Wire Gauge 20 AWG

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