HS-646WP Waterproof Servo (Standard Size)(Retired)


Need a servo for your project? This standard size analog servo is waterproof with high torque, dual ball bearings, and metal gears.

In stock

HS Code: 4202.12.29.10

Product Description

Hitec’s waterproof servos have what it takes to keep your robot watertight! With high torque, dual ball bearings and metal gears, these analog waterproof servos have the industry’s first IP67* rating ranking them among the most durable and reliable servos for wet conditions. Whether you are manning your power boat, bashing in the mud, or directing your underwater robot, the HS-646WP will dependably keep your mind at ease.

IP = International Protection Code

6 = Dust Tight

7 = Immersion up to 1M


  • Industry’s First IP67-Rated Waterproof Case
  • Strong Three-Pole Ferrite Motor
  • Metal Gear Train with MP First Gear
  • Dual Ball Bearing-Supported Output Shaft
  • 7.4v 2-Cell LiPo Capability
  • Programmable Circuitry


  • 1 x HS-646WP Waterproof Servo


Control SignalStandard 3-5V Pulse Width Control
1500 μs – neutral
1100 μs – 45 ° counter-clockwise
1900 μs – 45 ° clockwise
Speed0.20 s/60° @ 6.0V
0.17 s/60° @ 7.4V
Torque133 oz/in @ 6.0V
161 oz/in @ 7.4V
9.6 kg/cm @ 6.0V
11.6 kg/cm @ 7.4V
Dimensions1.65in x 0.83in x 1.57in41.8mm x 21.0mm x 40.0mm
Weight in Air0.13 lb60 g
Electrical Connector3-pin female (0.1″ pitch)
Cable Length7.0 in178 mm


Manufacturer Page


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