Siemens SIMOTICS M 1FE1 Built-In Synchronous Motor

Siemens SIMOTICS M 1FE1 Built-In Synchronous Motor About

The Siemens 1FE1051-4HC10-1BA0 is a SIMOTICS M 1FE1 four-pole built-in synchronous motor designed for high-speed spindle and precision machine-tool applications. It operates from a 600 V DC link and uses water cooling with an IP00 protection rating as an integrated motor component. The motor provides 12.6 kW rated output power, 5 Nm rated torque, and 25 A rated current at an exceptionally high rated speed of 24,000 RPM. Its maximum speed is 40,000 RPM, making it suitable for high-speed CNC spindles, precision machining, grinding, and other demanding industrial applications. The motor uses HS2-type overhang encapsulation with standard KTY temperature protection and a standard cooling jacket. The configuration consists of individual stator and rotor components, with 1.5 m free cable ends. The rotor inertia is approximately 0.00045 kgm. Siemens documentation specifies a stator weight of approximately 3.5 kg with cooling jacket and rotor weight of approximately 0.60 kg. The design is optimized for high-speed operation, compact construction, and reliable thermal performance.