HS-488HB Servo-Clockwise (stock)-Stock Rotation


The HS-488HB servo is based around the popular HS-485HB but with a few noteworthy changes.  To be more compatible with a wider spectrum of the servos and attachments on the market, the HS-488HB has a 25 tooth spline.  This makes bulking up supporting parts much easier as you are able to stick to one spline size rather than bouncing back and forth between 24 and 25.  The new spline comes with a larger servo screw that has a 2.5mm hex drive rather than a Phillips drive.  The HS-488HB also has an updated potentiometer which has allowed the removal of the mechanical stops in the geartrain.  Without mechanical stops you can drive the servo to the extremes in terms of range of motion without concern of contacting a mechanical stop which puts the servo in a stall situation.

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 relatively 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 H25T Spline
Voltage Range 4.8V - 6.0V
No-Load Speed (4.8V) 0.22sec/60°
No-Load Speed (6.0V) 0.18sec/60°
Stall Torque (4.8V) 66.6 oz-in. (4.8 kg.cm)
Stall Torque (6.0V) 83.3 oz-in. (6.0 kg.cm)
Max PWM Signal Range 553-2425μsec
Travel per µs .102°/μsec
Max Rotation 190°
Pulse Amplitude 3-5V
Operating Temperature -20°C to +60°C
Current Drain - idle (4.8V) 8mA
Current Drain - idle (6.0V) 8.8mA
Current Drain - no-load (4.8V) 150mA
Current Drain - no-load (6V) 180mA
Continuous Rotation Modifiable Yes
Direction w/ Increasing PWM Signal Clockwise
Deadband Width 8µs
Motor Type 3 Pole Ferrite
Feedback Style 5KΩ Potentiometer
Output Shaft Support Top Ball Bearing, Bottom Bushing
Gear Material Karbonite
Wire Length 11.81" (300mm)
Weight 1.59oz (45g)
Wire Gauge 25AWG
Servo Size Standard

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