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, Pulley For KST X08 & X06, Frame with plain bearing for the KST X08, Integrated Drive System/Mono for KST X08