Product Description:

The C4.SM.000-3420 is a synchronous servo motor built by KEB as part of the SM Synchronous Servo Motors series. In automated machinery, this motor converts drive current into controlled rotary motion so axes can position accurately, follow command changes, or regulate load profiles with high repeatability. Its compact housing, resolver feedback, and flange-mounted frame make it suitable for packaging lines, material-handling modules, and other precision assemblies that require closed-loop velocity and torque control. The motor is intended for applications where stable response during repeated starts, stops, and speed changes is important.

The unit relies on self-cooling, meaning heat is shed through the housing surface without external blowers or liquid circuits. Rotor position is measured by a 2-pole resolver, which supplies analog sine-cosine signals to the drive for fine commutation. A mechanical limit of 6000 rpm sets the top speed for rapid index moves, while a peak torque of 27.0 Nm supports short bursts of acceleration before thermal limits are approached. Installation follows the IM B5 mounting pattern, so the motor face mates directly to compatible gearboxes or machine plates. The motor is rated for continuous operation at 3000 rpm with 5.0 Nm of torque, and it can hold 6.0 Nm at stall when commanded current is maintained.

An enclosure rating of IP65 helps protect the frame against dust ingress and low-pressure water jets, allowing mounting near the process area. During steady load, the stator draws a rated current of 3.7 A from a DC link regulated by the drive at about 330 V. A thermistor embedded in the windings trips at 150 °C to help protect the insulation system during overload conditions. Power is transmitted through a shaft ground to Ø14 k6, which provides a precise interference fit with standard couplings. This shaft fit supports secure torque transfer in compact servo-driven assemblies.