The 1FK7034-5AZ91-1ZZ9-Z is a Siemens 1FK7 compact permanent‑magnet synchronous servo motor configured for KUKA systems, often referenced with KUKA article numbers such as 00‑120‑420 or 00‑125‑537. It uses rare‑earth magnets and is designed for operation on SINAMICS S120‑class DC bus voltages around 560 V, providing high torque density and dynamic response in a small package. According to detailed product data, this motor variant (order name ME_16_60_42_S0) offers a rated power of 0.5–0.57 kW, rated torque 1.2 Nm, and a rated speed of 4,200 rpm, with maximum torque up to 6.4 Nm and maximum current up to 8 A.
Mechanically, it is part of the 1FK7034 frame size, with a compact build and a drive‑end shaft specified as involute (splined) shaft rather than a plain or keyed shaft, optimized for gear or coupling interfaces used in robotics and compact axes. The motor includes a holding brake with 1.1 Nm holding torque at 120 °C, and its rotor inertia is listed as 0.98 kg·cm², enabling fast acceleration for pick‑and‑place and contouring moves. With a DC bus voltage rating of 560 V, the motor is intended for use with matching Siemens servo drives (e.g., SINAMICS S120) or KUKA drive modules.
The design meets protection classes IP64 or IP65 depending on exact configuration, offering robust protection against dust and splashing water, suitable for typical industrial robot cells and automation machinery. Dimensions from a representative listing show approximate length 230 mm, width 75 mm, height 120 mm, with a motor weight around 3 kg and shipping weight about 5.6 kg, reflecting its compact yet robust construction. As with other 1FK7 motors, cooling is natural (surface‑cooled), insulation complies with IEC 60034‑1, and integrated encoders (incremental or absolute, depending on sub‑variant) provide precise speed and position feedback to the servo controller.
Because this is a Siemens 1FK7‑based motor re‑branded for KUKA, users must match not only the mechanical variant but also the E‑stand (version level) and encoder type when replacing existing motors in KUKA robots or special machines. Suppliers typically offer these motors as used, refurbished, or new surplus, often with 6–12 month warranty and worldwide shipping, making them suitable as direct replacements in maintenance and repair scenarios.
