KUKA 1FK7105-5AY81-1YY3-Z S18 SERVO MOTOR T269157

The 1FK7105-5AY81-1YY3-Z S18 is a heavy-duty synchronous servo motor, part of the Siemens Simotics S-1FK7 family, specifically customized for KUKA Robotics (Internal KUKA Art. Nr. 151154 or 00-131-491). This is a massive "muscle" motor typically found on the primary axes (A1, A2, or A3) of high-capacity robots like the KUKA KR360 or KR500. The "S18" designation is the critical KUKA configuration code, ensuring the motor has the proprietary mechanical flange, high-resolution encoder, and internal wiring required for KUKA's KRC controllers.