Siemens SIMOTICS M 1FE1 Built-In Synchronous Motor

Siemens SIMOTICS M 1FE1 Built-In Synchronous Motor About

The Siemens 1FE1105-4WN11-1BA0 is a SIMOTICS M 1FE1 built-in synchronous motor designed for high-speed, high-precision spindle and machine-tool applications. It is a 4-pole permanent-magnet synchronous motor with a 600 V DC-link voltage, 105 K thermal rating, IP00 protection, and water cooling. The motor provides approximately 54 kW rated output power, 136 Nm rated torque, and 120 A rated current at a rated speed of 3800 RPM. Its maximum permissible speed is 16,000 RPM, making it suitable for demanding high-speed spindle applications. The motor uses overhead-encapsulated winding with standard KTY thermal protection and a standard cooling jacket for effective heat dissipation. The configuration consists of separate stator and rotor components, supplied without a rotor sleeve and with 1.5 m free cable ends and a rigid connection. A Voltage Protection Module (VPM) is required for operation at the specified high speeds. The motor is suitable for CNC machine tools, high-speed spindles, precision machining, grinding, and other industrial applications requiring high power density, reliable thermal management, and precise speed control. Siemens-related listings confirm the 1FE1105 family and its 54 kW, 3800 RPM configuration.