The KST X08 is a very light (8 g) low/medium/high voltage metal cased servo. It is especially good for ailerons on discus launched gliders, electric racers, and all models with thin flying surfaces. Despite being only 8 mm thick the powerful coreless DC motor and gearing provide good torque and high speed. The X08 can be operated from a voltage as low as 3.8V (1S LiPo) or as high as 8.4V (2S LiPo). KST servos have excellent geartrain machining tolerances, and this servo is completely slop free, and equal to products costing twice as much. Despite not having an -MG moniker this servo has metal gears, and is very tough.
The KST X08's high torque, good speed, and 8mm thinness make it suitable for many high performance glider, pylon racers and EDF applications. With up to 2.8kg.cm torque the KST X08 is appropriate for F3K, F5D, F5J, many types of high performance models.
The V3 version has improved electronics and a better supported servo cable. The servo output arms are all different, with one designed for DLGs with a reduced vertical height.
Feb 2017: We are now only selling the new V5 version (there wasn't a V4). It has improved firmware and electronics, giving even more precise centering and a greater throw.
The extreme reliability and performance of these servos also makes them very suitable for use in film and motion picture industry special effect departments. They are also used in robotic, drone, UAV, UAS, academic research, military, and other highly demanding applications.
|KST X08 Specifications|
|Body dimensions|| 23.5 mm wide x 8.0 mm thick x 16.8 mm high||0.93" wide x 0.31" thick x 0.66" high |
|Max dimensions|| 29.5 mm wide x 8.0 mm thick x 25.0 mm high||1.16" wide x 0.31" thick x 0.98" high |
|Stall torque (3.8V)|| 1.40 kg.cm|| 19 oz.in|
|Stall torque (6V)|| 2.20 kg.cm|| 31 oz.in|
|Stall torque (8.4V)|| 2.80 kg.cm|| 39 oz.in|
|Weight|| 8.4 g|| 0.30 oz|
|Lead length|| 10 cm|| 4.0 in|
|Operating speed (3.8V)|| 0.18 sec/60° |
|Operating speed (6V)|| 0.15 sec/60° |
|Operating speed (8.4V)|| 0.09 sec/60° |
|Operating voltage|| 3.8V to 8.4V |
|Bearings|| 2 ball bearings |
|Gear material|| Aluminium alloy / copper-bronze alloy |
|Case material|| Aluminium alloy |
|Motor type|| Coreless DC motor |
|Working frequency|| 333 Hz |
|Driver type|| FET |
|Digital|| Yes |
|Programmable|| No |
|Supplied accessories||3 plastic output arms, 1 arm retaining screw, 4 mounting screws|
|Optional accessories||Frame for KST X08, KST X08 Servo Arm Set, Frame with bearing for the KST X08|