Product Description:

The B3.SM.000-440J is a synchronous servo motor produced by KEB in the SM Synchronous Servo Motors series. Designed for precision positioning in automated assembly lines and packaging cells, the unit converts stator current into controlled mechanical rotation for coupled loads. It occupies the B3 frame class and is supplied without a holding brake, making it suitable for axes where the drive or an external lock secures the load during power-off periods.

Nominal shaft velocity tops out at 4000 rpm, allowing direct coupling to gearless mechanisms that need medium-high-speed motion. Continuous stall torque is rated at 3.22 Nm; this value indicates the steady twisting force available when the rotor is energized but motionless, which is useful for static loads that require precise holding under closed-loop control. The windings are optimized for 330 V operation with a 400 V-class supply and a 560 V DC bus, so the motor pairs with standard KEB inverters on 400-volt mains networks. Heat is removed through self-cooling, eliminating the need for external fans or liquid circuits and simplifying enclosure layouts. Power and feedback conductors terminate in a terminal box, providing screw-clamp access that supports field wiring modifications without special connectors.

The motor carries an ingress protection rating of IP54; its protection against limited dust entry and splashing water permits installation in typical factory environments without additional sealing. The rotor-stator assembly weighs 3.0 kg, so gantry or robot joints can accelerate rapidly with moderate drive currents. A B5 flange compatible with IFT5 provides standardized pilot and bolt-circle dimensions for straightforward alignment with gearheads or machinery plates. Torque is transmitted through a shaft with a feather key, enabling positive, slip-free engagement with pulleys, couplings, or timing hubs.