HS-646WP Servo-Clockwise (stock)-Stock Rotation


Hitec's waterproof servos have what it takes to keep your radio control vehicle, airplane or robot watertight! With high torque, dual ball bearings and metal gears, our 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, directing your underwater robot, or water landing your 25% plane, the HS-646WP will dependably keep your mind at ease.

How Far Will This Servo Rotate?

The answer to this question is partially dependent on what you are using to control the servo.
Click for a quick video explanation.

With an Average Radio System:
Your average transmitter and receiver will output a relativly narrow PWM signal range.

Radio System + Travel Tuner:
Adding a Servo Travel Tuner to your radio system setup will allow you to achieve wide PWM signal ranges.

Wide Signal Controllers:
Controllers such as the Servo Commander, Arduinos, and Raspberry Pi servo hats can usually send a wide signal.

Tech Tips


Output Shaft Style C24T Spline
Voltage Range 6.0V - 7.4V
No-Load Speed (7.4V) 0.17sec/60°
No-Load Speed (6.0V) 0.20sec/60°
Stall Torque (6.0V) 133.3 oz-in (9.6 kg.cm)
Stall Torque (7.4V) 161.1 oz-in (11.6 kg.cm)
Max PWM Signal Range 553-2520μsec
Travel per µs (Stock) .098°/μsec
Max Rotation (Stock) 193°
Pulse Amplitude 3-5V
Operating Temperature -20°C to +60°C
Continuous Rotation Modifiable No
Direction w/ Increasing PWM Signal Clockwise
Deadband Width 2µs
Motor Type 3 Pole Ferrite
Feedback Style 5KΩ Potentiometer
Output Shaft Support Dual Ball Bearings
Gear Material 3 Metal Gears and 1 Nylon Gear
Wire Length 7" (178mm)
Weight 2.12oz (60g)
Wire Gauge 22AWG
IP Rating IP67
Direction Clockwise (stock)
Servo Size Standard

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