PTK 7308-MG-D Servo - 3.5Kg.cm 0.07s 9.2g 8mm
Description
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 | |
Reviews 3
Nick Mann
United Kingdom
Affordable quality
Great little servos, quality product at a great price,
A Hack
United Kingdom
Aria elevator servo
Ideal size and power but servo connection sticking so more needed to improve
Nigel Dell
United Kingdom
Great Servos
Glad to see Neil is stocking these servos now, I discovered PTK servos a few years ago when buying a kit from a French store and was impressed with the quality and accuracy of them especially at the price, never have had a bad one, great service as usual from Hyperflight they are justifiably renowned for quality and service.
