Motore NSK

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CNC Servo Motor – NSK YS3040GN502

The YS3040GN502 is an AC brushless servo motor (“Servo Motor”) manufactured by NSK, designed for axis control on CNC machine tools. The part number identifies a motor from the YS series with a 40 mm frame, engineered for high-precision linear and rotary positioning on machining centres and CNC milling machines. Compatible with various CNC control systems via integrated encoder interface; the suffix GN502 identifies the winding variant and encoder configuration.

The servo motor is the electromechanical actuator that converts digital CNC commands into precise axis movement: it closes the position and speed control loop, ensuring micron-level positioning accuracy. A motor failure renders the axis completely inoperative, halting production; feedback anomalies trigger CNC alarms or erratic movement with risk of tool-workpiece collision.

NSK Ltd., founded in 1916 in Japan, is one of the world’s leading manufacturers of precision bearings, linear guides and ball screws. Their motion & control division produces servo motors and drive components for high-precision CNC machine tools, with a strong presence in Asian and European markets. Motors in the YS series are legacy / discontinued: available exclusively as used stock, surplus or through specialist repair.

Main Technical Specifications