Overview
The 1FL6042-2AF21-1LG1 is a Siemens 1FL6-series servomotor for SINAMICS V90 drives, rated at 750 W with 2.39 Nm of rated torque at 3000 rpm. It carries a low-inertia rotor, an absolute encoder system (20-bit single-turn plus 12-bit multi-turn), and an IP65 enclosure for washdown or dusty environments.
This motor is designed for dynamic positioning and speed control in servo applications. The low-inertia rotor (0.897 kgcm² moment of inertia) allows rapid acceleration and deceleration, making it suitable for short-stroke pick-and-place or indexing moves. The absolute encoder retains position after power loss without a homing cycle, simplifying commissioning on multi-axis machines. Rated torque of 2.39 Nm at 3000 rpm maps to the 750 W power rating; the natural cooling design means no external fan, reducing maintenance but requiring adequate free air around the motor body.
Siemens has classified the 1FL6042-2AF21-1LG1 as phase-out, with a formal discontinuation date of 2025-10-01. After that date, Siemens will no longer manufacture or support this order code. Buyers should evaluate last-time-buy quantities or identify a successor within the 1FL6 family for ongoing production needs.