Siemens SIMOTICS M 1FE1 Built-In Synchronous Motor

Siemens SIMOTICS M 1FE1 Built-In Synchronous Motor About

The Siemens 1FE1072-4WN11-2BW3 is a SIMOTICS M 1FE1 built-in synchronous motor designed for high-speed, high-precision spindle and machine-tool applications. It belongs to the 4-pole 1FE1072 motor family and is designed for operation from a 600 V DC link with water cooling. The 1FE1072 family is rated around 16 kW output power, 28 Nm rated torque, and 5500 RPM rated speed, with a maximum speed of up to 24,000 RPM for the corresponding standard configuration. The motor uses a KTY temperature sensor for thermal monitoring and incorporates a potted winding with standard protection. The -2BW3 configuration is a stator-only component, intended for integration with the corresponding rotor and cooling arrangement rather than standalone operation. It is suitable for high-speed CNC spindles, precision machine tools, grinding machines, and demanding industrial drive applications where compact construction, high rotational speed, and controlled thermal performance are required. Siemens and industrial product listings identify the 1FE1072-4WN11 family as a water-cooled SIMOTICS M built-in synchronous motor.