SPT Servo SPT4418HV

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*Based on known specs.

Technical Specifications

Last Updated: 2026-07-28

Identity
Brand
Category	Hobby
Performance
Torque	8.4V 250.00 oz-in 6.0V 194.40 oz-in
Speed	8.4V 0.07 sec/60° 6.0V 0.09 sec/60°
Stall Current	≤2.5 AAbove Average
Physical
Weight	1.94 ozBelow Average
Dimensions	L 1.57 in W 0.79 in H 1.11 in
Case Material	Aluminum
Drivetrain
Motor Type	Coreless
Gears	Metal
Gear Spline/Teeth	25 T
Rotation Mode	Standard
Rotation/Support	Dual Bearings
Control & Signal
Modulation	Digital
Direction	Counterclockwise
Rotational Range	180°
Pulse Cycle	20 ms
Pulse Width	500-2500 µs
Neutral Position	1500 µs
Angle Sensor	Potentiometer
Control System	PWM
Signal Voltage	3.3–5.0V
Electrical & Environment
Operating Voltage	4.8–8.4 V
Temperature	-10–50 °C
Idle Current	10.000 A
Connectivity
Connector	JR (Universal) estimate
Wire Length	260 mm

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Compatible Hardware

Amazon eBay

*Based on known specs.

Class Comparison

Weight	Below Average Lighter than 27% of the 223 Digital Low Profile servos
Stall Current	Above Average Lower draw than 88% of the 41 Digital Low Profile servos

Performance Analysis

Torque Density	3.5346 oz-in/g
Torque-to-Volume Ratio	141.20 oz-in/in³
Speed-to-Weight	0.20202 (1/sec·g)
Speed-Torque Trade-off	17.50
Current-per-Torque Ratio	0.0129 A/oz-in
Voltage Range Width	3.6 V Wider voltage range than 67% of the 165 Digital Low Profile servos in the database