Product Description:

The E3.SM.002-440J is a permanent-magnet AC servo motor manufactured by KEB within the SM Synchronous Servo Motors series. It serves as an electromechanical actuator that delivers precisely controlled torque and speed to automated axes in printing, packaging, and assembly systems. The motor body follows the IM B5 mounting pattern, so its face flange bolts directly to machine plates or planetary gearheads. Its five pole pairs generate a sinusoidal back-EMF profile suited to vector control loops.

At standstill, the rotor can hold a load with 29 Nm of continuous torque while drawing 17.2 A, helping prevent position drift when motion is paused. Under rated operating conditions, the motor draws 8.1 A, limiting heat generation during continuous duty. For rapid indexing, the electromagnetic system can reach a peak torque of 110.84 Nm, supported momentarily by a drive current of up to 80.9 A. The induced voltage increases in proportion to speed at a rate of 164.05 Vpk/1000 rpm, which the drive uses to predict back-EMF and regulate inverter output. These operating values support applications that require controlled acceleration, sustained holding force, and accurate speed regulation.

The magnetic circuit stores energy through a winding inductance of 4.2 mH, which influences current ripple during pulse-width modulation. The winding has a copper resistance of 0.45 Ω, which affects electrical losses and heat generation during operation. A cast housing with a mass of 17.4 kg helps dissipate heat, while the rotor inertia of 29 kg·cm² balances responsive acceleration with stable motion control. The motor supports speeds up to 6000 rpm, allowing direct coupling to high-speed shafts without exceeding the permitted rotor speed. When paired with a compatible closed-loop servo drive, its electrical and mechanical characteristics support precise positioning under changing load conditions.