The KST X20-8.4-50MG HV servo is an impressively powerful and precise metal cased high voltage large model servo. Designed to be run directly from a 2S LiPo without needing a regulator. At 21mm thick and an impressive 45 kg.cm torque the KST X20-8.4-50MG is appropriate for large models, all fast large gliders and jets requiring considerable torque values. It utilises a 17mm diameter coreless motor to help with such substantial torque outputs.
KST also advise unlike any other servo, the X20 generates no counter EMF in any working conditions. It has an all-new design of circuit board, so your heli flybarless system and receiver will not be interfered with and will not display any weird behavior as a result.
The servo is approx standard size and has an output spline the same as similar Futaba servos, so many compatible output arms are available.
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 X20-8.4-50 Specifications|
|Body dimensions||۴۰٫۵ mm wide x 21.0 mm thick x 39.9 mm high||۱٫۵۹″ wide x 0.83″ thick x 1.57″ high|
|Max dimensions||۵۴٫۰ mm wide x 21.0 mm thick x 48.9 mm high||۲٫۱۳″ wide x 0.83″ thick x 1.93″ high|
|Stall torque (6V)||۳۸ kg.cm||۵۲۸ oz.in|
|Stall torque (7.4V)||۴۲ kg.cm||۵۸۳ oz.in|
|Stall torque (8.4V)||۴۵ kg.cm||۶۲۵ oz.in|
|Weight||۸۲ g||۲٫۸۹ oz|
|Lead length||۳۱ cm||۱۲٫۳ in|
|Operating speed (6V)||۰٫۲۰ sec/60°|
|Operating speed (7.4V)||۰٫۱۷ sec/60°|
|Operating speed (8.4V)||۰٫۱۵ sec/60°|
|Operating voltage||۶٫۰V to 8.4V|
|Bearings||۲ ball bearing|
|Working frequency||۳۳۳ Hz|
|Pulse width||۹۰۰ – ۲۱۰۰ µs|
|Supplied accessories||۴ plastic output arms, 1 arm retaining screw, 4 mouning screws, 4 rubber grommets, 4 metal bushes|