Siemens 1FK7083-2AF71-1QB0 SIMOTICS S 1FK7-CT 16Nm 3000rpm Servo Motor

The Siemens 1FK7083-2AF71-1QB0 is a SIMOTICS S 1FK7-CT synchronous servo motor rated 3.3 kW (PN) with 16 Nm standstill torque (M0) at 100K, 7.2 A rated current, and IP64 protection. It runs up to 3,000 rpm with an integrated 20-bit single-turn Drive-CLiQ absolute encoder (AS20DQI) and an integrated holding brake for vertical-axis use.

Technical Specifications

Selection Notes

The 16 Nm / 100K standstill torque and 8-pole design fit this 1FK7-CT variant to compact, high-torque axes rather than high-speed, low-inertia moves — check the 29.500 kgcm² rotor inertia against the load's reflected inertia ratio. It is naturally cooled with no forced-air option, so continuous torque is thermally limited by the 50-minute thermal time constant; verify the duty cycle rather than relying on peak torque alone. The integrated holding brake plus IP64 sealing make this the variant to choose for vertical or gravity-loaded axes that must hold position at power-off, over a non-brake sibling in the same frame. The 20-bit single-turn Drive-CLiQ encoder (AS20DQI) supports closed-loop commutation and position feedback without an external encoder cable.

Applications

Machine-tool feed axes, robotic arm joints, packaging-line servo axes, and CNC applications needing 16 Nm at up to 3,000 rpm with brake-hold capability on vertical mounts.