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The FT2331M digital servo motor is designed for RC aircraft, drones, robotics, control mechanisms and other compact motion-control applications that need accurate angular positioning.
The listing describes an aluminium case, metal gear transmission, ball bearings and a coreless motor, with digital pulse-width control for precise positioning.
It delivers a stall torque of 4.5kg.cm and a speed of 0.09 seconds per 60 degrees at 6V, in a compact 32 x 12 x 27.5mm body of about 21g.
4.5kg.cm stall torque: strong for its size.
0.09s/60 degrees at 6V: fast response.
Aluminium case: rigid and good for heat dissipation.
Metal gear transmission with ball bearings: durable and smooth.
Coreless motor: responsive and efficient.
Wide voltage range: 3V to 8.4V.
25T spline and JR-type connector: common fittings.
A hobby servo combines a small motor, a gearbox and a position sensor with control electronics. You send it a pulse every 20 milliseconds or so, and the width of the pulse tells it where to go: about 1.5 milliseconds is centre, with roughly 1.0 and 2.0 milliseconds at the ends. The servo drives its output shaft until the sensor says it has reached the commanded position, then holds it against the load.
Digital servos process the signal with a microcontroller and drive the motor at a much higher rate than analogue servos, which gives faster response, a smaller dead band and stronger holding torque. Metal gears cope better with shock loads than plastic ones, and ball bearings keep the shaft smooth and reduce wear.
Always power a servo from a supply that can deliver its peak current, not from a weak receiver port, and keep the linkage free so the servo never strains against a mechanical stop. A stalled servo draws a large current and can overheat within seconds.
RC aircraft control surfaces
Drones and gimbal mechanisms
Robotics and control mechanisms
Compact motion-control projects
Replacing an older plastic-gear servo
The key specifications list 4.5kg.cm stall torque, 0.09s/60 degrees speed at 6V, a 32 x 12 x 27.5mm body, about 21g weight, an input voltage range of 3 to 8.4V, a 25T output spline and a JR-type connection. The title refers to a 180-degree servo while the specification list mentions a 240-degree operating travel, so check the travel range in your controller.
The page does not list a package contents section.
Stall torque: 4.5kg.cm
Speed: 0.09s/60 degrees at 6V
Case: aluminium; gears: metal; bearings: ball; motor: coreless
Size: 32 x 12 x 27.5mm
Weight: about 21g
Operating travel: 240 degrees (specification) / 180 degrees (title)
Voltage: 3V-8.4V
Output spline: 25T
Connection: JR-type
1 x FT2331M digital servo motor
RC and robotics builders who want a compact digital servo with an aluminium case and steel gears.
4.5kg.cm stall torque.
0.09s/60 degrees at 6V.
3V to 8.4V.
About 21g.
A JR-type connector.
Aluminium.
| Brand | Readytosky |
|---|---|
| Dimensions | 32 x 12 x 27.5 mm |
| Gear Material | Steel |
| Operating Voltage | 3-8.4V |
| Output Spline | 25T |
| Rotation Angle | 180 degree (240 degrees operating travel per description) |
| Stall Torque | 4.5kg-cm |
| Weight | 21.000000 g |
| Selling unit | PCS |
