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HS-646WP Servo

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  • HS-646WP with quarter for scale
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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.


- Metal Gear with MP First Gear
- Dual Ball Bearings
- Industry’s First IP67-rated Waterproof Case
     IP = International Protection Code
     6 = Dust Tight, 7 = Immersion up to 1M
- 2 Cell LiPo Capability

Dimensions 1.65” x 0.83” x 1.57" (41.8 x 21 x 40mm)
Product Weight 2.12oz (60g)
Output Shaft Style 24 tooth (C1) spline
Voltage Range 6.0V - 7.4V
No-Load Speed (6.0V) 0.20sec/60°
No-Load Speed (7.4V) 0.17sec/60°
Stall Torque (6.0V) 133.3 oz/in. (9.6
Stall Torque (7.4V) 161.1 oz/in. (11.6
Max PWM Signal Range (Standard) 553-2520μsec
Travel per µs (out of box) .098°/μsec
Max Travel (out of box) 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
Internal Feedback Style 5KΩ Potentiometer
Output Shaft Support Dual Ball Bearings
Gear Type Straight Cut Spur
Gear Material 3 Metal Gears and 1 Nylon Gear
Wire Length 7" (178mm)
Wire Gauge 22AWG
IP Rating IP67

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