Siemens SIMOTICS S-1FT7 Synchronous Servo Motor

Siemens SIMOTICS S-1FT7 Synchronous Servo Motor About

The Siemens 1FT7086-5AC71-1LH2 is a SIMOTICS S-1FT7 synchronous servo motor designed for high-performance motion control, CNC machine tools, robotics, and industrial automation applications. It is a naturally cooled permanent-magnet synchronous motor with a rated torque of 28 Nm, rated speed of 2,000 RPM, and approximately 4.71 kW rated output power. The motor is engineered for precise speed, torque, and position control and is suitable for integration with Siemens SINAMICS drive systems. The 1FT7 construction provides high dynamic response, high power density, and reliable continuous operation in demanding industrial environments. The -5AC71 configuration identifies the motor's electrical and mechanical arrangement, while -1LH2 specifies the particular feedback, shaft, brake, and connection configuration. Typical applications include CNC machine tools, robotics, material handling, production automation, packaging machinery, and precision positioning systems. The permanent-magnet design provides efficient servo operation and rapid dynamic response, while the robust industrial construction supports dependable operation. For this exact MLFB, the encoder type, holding-brake specification, protection rating, dimensions, and weight should be confirmed from the Siemens-specific datasheet before procurement.