Product Description:

The X1.SM.001-4220 is a synchronous servo motor manufactured by KEB for the SM Synchronous Servo Motors series. It is intended for closed-loop motion control in equipment that must index axes, track product positions, or interpolate tool paths with consistent accuracy. Its permanent-magnet rotor and responsive stator windings allow a compatible inverter to regulate torque, speed, and position with the fast response expected in industrial automation. In machine sections with frequent starts, stops, and direction changes, this layout supports precise motion without requiring a large motor package.

The motor has a rated shaft speed of 4500 rpm and operates at a rated electrical frequency of 225 Hz. Under locked-rotor conditions, it can produce 0.8 Nm of stall torque, which helps support static loads and low-speed holding tasks. The phase winding resistance is 13.2 Ω, and the motor has an IP54 protection class that helps limit the entry of dust and light spray during normal operation. Its mechanical interface uses a 40 mm centering diameter, a 63 mm square flange, a 9 mm output shaft for keyed couplings, and three pole pairs to establish the synchronous field pattern. The flange and centering features help seat the motor accurately against the machine face, while the shaft size suits compact couplings in small axis assemblies.

For dynamic operation, the motor can reach a maximum speed of 12000 rpm when the application calls for high cycle rates. It can also deliver peak torque of 4.18 Nm during short acceleration periods, while its voltage constant of 49 Vpk/1000 rpm helps match the motor to a suitable drive at higher speeds. An inductance of 36.8 mH influences current ripple and control response, and the 0.25 kg·cm² rotor inertia supports quick reversals without making the axis overly abrupt in steady operation. This balance between peak output and controlled electrical behavior is useful in compact servo systems that need both responsive acceleration and stable running speed.