Product Description:

The 42.SM.200-34B0 is a synchronous servo motor produced by KEB within the SM Synchronous Servo Motors series. It is intended for precision motion tasks in industrial automation, where a dedicated drive supplies controlled current so the rotor delivers accurate angular positioning and stable speed for packaging lines, handling axes, or light machining centers. This type of motor is suited to axes that must start, stop, and reverse with consistent control during repeated machine cycles. The motor is supplied without a brake, so applications that require holding torque at standstill need an external mechanical holding method.

The motor reaches a rated speed of 3000 rpm, a level chosen to match common gearbox ratios and cycle-time targets. At this speed, it delivers 4.6 Nm of continuous torque while drawing 3.59 A from a DC bus of 330 V. The motor has a voltage constant of 113.0 V/1000 rpm, so back EMF rises linearly with speed and gives the drive a predictable basis for field-oriented control. That electrical balance supports smooth torque production across the normal operating range without abrupt current changes. When the shaft is blocked, the stator can withstand 4.0 A of stall current and develop 5.3 Nm of stall torque for short periods. Rotor inertia is 3.13 kg·cm², and the winding values of 20.7 mH inductance and 4.1 Ω resistance help regulate current rise and thermal loss during changing loads.

The housing is sealed to IP64, which helps keep dust out and protects against low-pressure water spray. Heat is removed by a self-cooling airflow path that eliminates the need for external blowers and helps keep the 5.7 kg frame compact. This cooling method also supports installation in compact machine spaces where separate ventilation hardware is not preferred. Installation follows the flange-mounted IM B5 pattern, allowing direct attachment to machine plates or gearboxes. Position feedback is provided by a resolver, which remains dependable under vibration and supports closed-loop motor control.