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Product Description

You get two choices with Hitec’s most popular servo the HS-81, resin or metal gears. A popular servo for smaller airplanes, heli’s, boats, cars and trucks, the HS-81 offers a fine balance between speed and torque.


  • Top Selling Micro Servo
  • Strong Three-Pole Ferrite Motor
  • Durable Nylon Gears


  • Nylon Gear Set | Link |
  • Plastic Case Set | Link |
  • Applicable Horns

HS-81 Servo Specifications

Performance Specifications
Operating Voltage Range (Volts DC)4.8V ~ 6.0V
Speed (Second @ 60°)0.11 ~ 0.09
Maximum Torque Range oz. / in.36 ~ 42
Maximum Torque Range kg. / cm.2.6 ~ 3.0
Current Draw at Idle8.8 mA
No Load Operating Current Draw280 mA
Stall Current Draw1,500 mA
Dead Band Width8 µs
Physical Specifications
Dimensions (Inches)1.17 x 0.47 x 1.16
Dimensions (Metric)29.8 x 12.0 x 29.6
Weight (Ounces)0.58
Weight (Gram)16.6
Circuit TypeHT7003 Analog SMT
Motor Type3 Pole Metal Brush Ferrite
Gear MaterialNylon
Bearing TypeNone
Output Shaft (type / Ømm)Standard 24
Case MaterialPlastic

HS-81 Standard Micro Servo

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