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HS-7954SH Servo

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The HS-7954SH could be considered the most economical high voltage, high torque, coreless servo on the market. Based on the ultra popular HS-7955TG, the HS-7954SH has the added benefit of Hitec's high voltage coreless motor. With 403 oz./in. of torque at 7.4 volts, the HS-7954SH is fast too, with a 0.12 second transit time when operating on a 2 cell LiPo pack. The HS-7954SH harnesses all this power by utilizing a heavy duty case that incorporates an aluminum heat sink, hardened steel gears, and two strong steel gear pins nested in brass axial bushings. Put it all together and you get one tough high voltage servo at a price that can't be beat.


Programable Features:
- Dead Band Width
- Direction of Rotation
- Speed of Rotation (slower)
- End Points
- Neutral Points
- Fail Safe On/Off
- Fail Safe Points
- Resolution (default is set at high)
- Overload Protection (default is off)

Dimensions 1.57" x 0.78"x 1.45" (40 x 20 x 37mm)
Product Weight 2.40oz (68g)
Output Shaft Style 24 tooth (C1) spline
Voltage Range 4.8V - 7.4V
No-Load Speed (4.8V) 0.18 sec/60°
No-Load Speed (6.0V) 0.15 sec/60°
No-Load Speed (7.4V) 0.12 sec/60°
Stall Torque (4.8V) 275oz/in. (
Stall Torque (6.0V) 333oz/in. (
Stall Torque (7.4V) 403oz/in. (
Max PWM Signal Range (Standard) 750-2250
Travel per µs (out of box) .081
Travel per µs (reprogrammed normal res) .133
Travel per µs (reprogrammed high res) .074
Max Travel (out of box) 121.5
Max Travel (reprogrammed normal res) 199.5
Max Travel (reprogrammed high res) 119.5
Pulse Amplitude 3-5V
Operating Temperature -20°C to +60°C
Continuous Rotation Modifiable Yes
Direction w/ Increasing PWM Signal Clockwise
Deadband Width 2µs
Motor Type Coreless Carbon Brush
Potentiometer Drive 6 Slider Indirect Drive
Internal Feedback Style 5KΩ Potentiometer
Output Shaft Support Dual Ball Bearings MR106
Gear Type Straight Cut Spur
Gear Material Steel
Wire Length 7" (178mm)
Wire Gauge 20AWG

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