Siemens 1FK7060-2AH71-1QB0 SIMOTICS S 1FK7-CT 1.7kW 6Nm 4500rpm Brake Servo Motor

The Siemens 1FK7060-2AH71-1QB0 is a SIMOTICS S 1FK7-CT synchronous servo motor rated 1.7 kW, 6 Nm standstill torque (M0, 100K), and 4500 rpm rated speed at 600 VDC bus voltage. It is naturally cooled, IMB5-mounted, and fitted with a DRIVE-CLiQ absolute single-turn 20-bit encoder (AS20DQI); this order number adds a holding brake, raising the moment of inertia to 8.700 kgcm².

Technical Specifications

Selection Notes

This 1FK7060-2AH71 winding combines the higher-speed 4500 rpm option in the 1FK7060 frame with a holding brake, suited to vertical or unbalanced high-speed axes that must hold position when de-energized. The brake raises moment of inertia to 8.700 kgcm² and total weight to 8.5 kg over the brake-less build in this winding, and lowers shaft torsional stiffness to 28,500 Nm/rad. At 4.3 A rated current for 6 Nm standstill torque, its 0.95 Nm/A torque constant is unchanged from the brake-less version — the brake does not affect the electrical winding design.

Applications

Natural (fan-less) cooling and IP64 protection suit compact machine enclosures without forced airflow. The DRIVE-CLiQ interface connects directly to SINAMICS S120/S210 drive systems over a single feedback cable. The combination of 4500 rpm rated speed and a holding brake fits vertical or unbalanced high-speed axes such as pick-and-place lift stages.