Siemens 1FK7063-2AF71-1RH1 Servo Motor – SIMOTICS S-1FK7

Siemens 1FK7063-2AF71-1RH1 — Compact Synchronous Servo Motor for High-Dynamic Motion Axes

The 1FK7063-2AF71-1RH1 belongs to the SIMOTICS S-1FK7 Compact family, a line of permanent magnet synchronous motors (PMSM) engineered specifically for servo-class motion control where torque density, encoder fidelity, and drive-system interoperability are non-negotiable. Within a 63 mm flange frame, this motor delivers a stall torque of approximately 7.0 Nm at a rated speed of 2,000 rpm, making it a practical selection for feed axes, handling joints, and coordinated multi-axis systems where physical envelope constraints coexist with demanding dynamic profiles.

Unlike general-purpose induction motors adapted for variable-frequency operation, the 1FK7 series is purpose-built for closed-loop vector control. The rotor uses rare-earth permanent magnets arranged to maximize air-gap flux density, which directly translates to a high torque-to-inertia ratio — a parameter that governs how quickly the motor can accelerate and decelerate under servo command. This characteristic is particularly relevant in applications such as electronic cam profiling, flying shear synchronization, and high-cycle pick-and-place operations where settling time within a positioning window directly affects throughput.

The suffix structure of the order number encodes the motor’s complete electromechanical configuration. The segment “2AF71” identifies the 400 V AC winding class (2A), the specific winding variant (F), and the encoder interface (7 = absolute encoder with DRIVE-CLiQ or resolver-equivalent signal). The terminal suffix “1RH1” specifies a smooth shaft with feather key groove and natural convection cooling — no forced-air fan is required, which eliminates a common maintenance point in high-cycle environments. The IP64 protection rating (IP65 at the shaft seal) allows deployment in environments with moderate particulate and splash exposure, covering the majority of machine tool and packaging line installations.

Real-time Stock & RFQ: [email protected] | WhatsApp: +86 18359268345

Technical Parameters

Hardware Logical Analysis

The 1FK7063-2AF71-1RH1 integrates several hardware-level design decisions that distinguish it from commodity servo motors in the same torque class.

Rotor Flux Architecture: The rotor employs interior permanent magnet (IPM) topology rather than surface-mounted magnets. In IPM designs, the magnets are embedded within the rotor lamination stack, which provides mechanical retention at elevated speeds and enables reluctance torque contribution alongside electromagnetic torque. The combined effect raises the motor’s overload capability and extends the constant-power speed range — relevant when the drive operates in field-weakening mode above base speed.

Absolute Encoder Integration: The -1RH1 suffix confirms an integrated absolute encoder with DRIVE-CLiQ interface. DRIVE-CLiQ is Siemens’ proprietary single-cable digital interface that carries both encoder position data and motor nameplate parameters (electronic nameplate) over a single shielded cable. On power-up, the SINAMICS drive reads the motor’s rated parameters directly from the encoder EEPROM, eliminating manual parameter entry and reducing commissioning errors. The 20-bit single-turn resolution (1,048,576 counts per revolution) provides a positioning granularity of approximately 0.00034° per count — sufficient for sub-micron linear positioning when paired with a 5 mm pitch ballscrew.

EMC Design: The motor housing is constructed from die-cast aluminum with continuous 360° shield termination at both the power connector and encoder connector. The stator winding uses a distributed winding pattern (as opposed to concentrated winding) which reduces harmonic content in the back-EMF waveform, lowering torque ripple at low speeds. The bearing arrangement uses insulated bearings on the non-drive end to interrupt shaft current paths induced by common-mode voltage from the PWM drive output — a failure mode that causes premature bearing pitting in motors not designed for inverter duty.

Thermal Management: The stator lamination stack is press-fit into the aluminum housing with controlled interference to maximize thermal conductance from winding to housing surface. The IC 410 cooling classification (natural convection, no external fan) relies on this conduction path. The insulation class F rating provides a 25 °C thermal margin above the class B limit, which translates to extended winding life under continuous rated load — Siemens’ thermal models project winding insulation life exceeding 20,000 hours at rated operating temperature.

Mechanical Rigidity: The 63 mm flange conforms to IEC 72-1 mounting dimensions, with a machined spigot register that provides radial alignment accuracy of ±0.02 mm. The shaft is ground to h6 tolerance, compatible with standard interference-fit couplings and zero-backlash bellows couplings used in precision positioning stages.

System Integration Benefits

• Zero-homing Startup: The absolute encoder retains position across power cycles without battery backup (single-turn variant). On system restart, the SINAMICS drive reads the absolute position within the first DRIVE-CLiQ communication cycle (~125 µs), enabling immediate motion readiness without homing sequences — directly reducing machine cycle time at shift start.
• Electronic Nameplate via DRIVE-CLiQ: Motor identification, rated parameters, and encoder calibration data are stored in the encoder EEPROM and transmitted to the drive automatically. This eliminates parameter mismatch errors during motor replacement and reduces commissioning time from hours to minutes in multi-axis systems.
• Deterministic Torque Response: When paired with SINAMICS S120 in vector control mode, the current control loop operates at a 62.5 µs cycle time (16 kHz switching frequency). This bandwidth supports torque rise times below 1 ms, enabling the servo axis to track aggressive velocity profiles without position lag accumulation.
• Integrated Safety Functions: The motor is compatible with SINAMICS Safety Integrated functions (STO, SS1, SLS, SDI) when the drive is equipped with the appropriate safety option board. This allows SIL 2 / PLd safety architectures without external safety relays, reducing panel wiring complexity and component count.
• Scalable Multi-axis Architecture: The 1FK7 family spans from 0.5 Nm to over 130 Nm stall torque within a consistent mechanical interface family. Standardizing on 1FK7 across machine axes allows a single spare motor strategy and unified commissioning procedures across the entire machine.
• Diagnostic Transparency: DRIVE-CLiQ continuously monitors encoder temperature, signal quality, and communication error counters. The SINAMICS drive surfaces these diagnostics via PROFINET/PROFIBUS to the PLC, enabling predictive maintenance triggers based on actual encoder health rather than fixed time intervals.
• Energy Recovery Compatibility: The motor’s low rotor inertia and high peak torque ratio allow rapid deceleration with regenerative braking. When connected to an S120 Active Line Module, deceleration energy is fed back to the DC bus and returned to the supply grid, reducing energy consumption in high-cycle applications by 15–30% compared to resistive braking configurations.
• Reduced Cabling Infrastructure: DRIVE-CLiQ combines power supply, encoder data, and motor identification on a single cable assembly (MOTION-CONNECT 800PLUS). Compared to traditional resolver or incremental encoder wiring, this reduces cable tray fill, connector count, and potential EMI coupling points in the cable run.

Quality Assurance & Global Logistics

Every unit of the 1FK7063-2AF71-1RH1 supplied through siemensplc.com is sourced through verified distribution channels with full Siemens factory traceability. Serial numbers are cross-referenced against Siemens production records to confirm authenticity prior to shipment. Units are stored in a climate-controlled warehouse in Xiamen, China, maintained at 20–25 °C with relative humidity below 60% RH, consistent with Siemens storage requirements for servo motors with integrated electronics.

Pre-shipment inspection covers visual examination of the motor housing, connector integrity, shaft runout check, and encoder communication verification where test equipment permits. Original packaging or equivalent anti-static, shock-absorbing packaging is used for all shipments. Export documentation — including commercial invoice, packing list, and certificate of origin — is prepared for all international orders.

Logistics from Xiamen port to major industrial hubs: DHL Express to Germany (Frankfurt) typically 3–5 business days; to the United States (Chicago) 4–6 business days; to Japan (Tokyo) 2–3 business days. Sea freight consolidation is available for multi-unit orders where lead time permits. All shipments are fully insured. A 12-month warranty against manufacturing defects applies to all genuine Siemens products supplied, subject to correct installation per Siemens commissioning guidelines.

Contact Information

Email: [email protected]
WhatsApp: +86 18359268345
Web: siemensplc.com
Location: Xiamen, China
© 2026 siemensplc.com. All rights reserved.