Product Description:

The 42.SM.201-44CJ is a three-phase synchronous servo motor manufactured by KEB as part of the SM Synchronous Servo Motors series. Designed for integrated drive systems, the unit converts electrical energy into controlled rotary motion for positioning, speed regulation, and dynamic load handling in automated machinery. Its construction supports encoder feedback and field-oriented control strategies commonly used in packaging lines, material handling modules, and multi-axis assembly stations.

At its electrical interface, the motor operates from a rated supply of 330 V and reaches a base speed of 4000 rpm, allowing direct pairing with KEB inverters without step-up transformers. The electromagnetic holding brake develops 9 Nm, so vertical or indexing loads remain stationary when power is removed, and it is suitable for repetitive engagement. External airflow is unnecessary because the frame relies on self-cooling, and a PTC resistor embedded in the windings supports temperature monitoring during operation. The B5 flange mounting pattern aligns with standard gearboxes, and the enclosure carries an ingress rating of IP65 against dust and water jets. This arrangement supports installation on axes that need controlled motion together with a compact motor and brake package.

The mechanical service profile includes a bearing life expectancy of 20,000 h, allowing long operating intervals in continuous duty cycles. When braking, rotational inertia is limited to 0.54 kg·cm² and additional mass is only 0.52 kg, which helps reduce deceleration energy and drive shaft stress. The brake can be released safely up to 10,000 rpm, supporting use on high-speed indexing applications. A shaft gland rated at IP64 protects the output journal from coolant splash while permitting low-friction rotation. The motor is suitable for high-cycle pick-and-place arms and labeling spindles where rapid stopping and splash protection are important.