PTK 7308-MG-D Servo - 3.5Kg.cm 0.07s 9.2g 8mm

Looking for the perfect blend of performance, precision, and value? The PTK 7308-MG-D delivers exactly that. Matching the dimensions of the popular KST X08 and offering very similar specs, this servo comes in at around half the price – making it a smart upgrade for any budget-conscious pilot.

Inside, you’ll find a high-quality coreless motor, dual ball bearings, and robust stainless steel gears, all securely housed in a CNC-machined aluminium case. The result? Incredibly smooth operation with virtually zero free play – ideal for high-precision flight control.

One standout feature is its wide rotation range – up to 180° from a 500–2500 µs pulse width – giving you greater flexibility when designing control linkages and achieving optimal mechanical advantage.

The 15T-4 output spline ensures full compatibility with KST X06, KST X08, and CHA DS06 servo accessories – including the Pulley for KST X08 & X06 Servos – making it perfect for DLGs and other models using pull-spring control systems.

Want to see it in action? Watch this independent test video here

PTK 7308-MG-D Servo Specifications
Body dimensions	23.5 mm wide x 8.0 mm thick x 21.1 mm high	0.93" wide x 0.31" thick x 0.83" high
Max dimensions	29.5 mm wide x 8.0 mm thick x 27.0 mm high	1.16" wide x 0.31" thick x 1.06" high
Stall torque (3.8V)	2.6 Kg.cm	36 oz.in
Stall torque (5V)	3 Kg.cm	42 oz.in
Stall torque (8.4V)	3.5 Kg.cm	49 oz.in
Weight	9.2 g	0.32 oz
Lead length	17 cm	6.7 in
Operating speed (3.8V)	0.175 sec/60°
Operating speed (5V)	0.083 sec/60°
Operating speed (8.4V)	0.065 sec/60°
Operating voltage	3.8V to 8.4V
Operating temperature	-20 to +60 °C
Bearings	2 ballraces
Gear material	Stainless steel
Case material	Aluminium
Motor type	Coreless
Working frequency	333 Hz
Dead band/resolution	3 µs
Pulse width for ± 60º	µs
Digital	Yes
Programmable	No
Position feedback	Potentiometer
Supplied accessories	3 plastic output arms, 4 mounting screws, 1 arm retaining screw.
Optional accessories	Ply Frame for KST X08, KST X06 Arm Set, Aluminium Output Arm for CHA DS06, Pulleys For KST X06, Frame with plain bearing for the KST X08, Integrated Drive System/Mono for KST X08