SIEMENS 1FK7063-2AF71-1RH1 Synchronous Servo Motor – Obsolete SIMOTICS S-1FK7 Spare Part

Technical Dossier

Product Details And Specifications

SIEMENS 1FK7063-2AF71-1RH1 Synchronous Servo Motor – Obsolete SIMOTICS S-1FK7 Spare Part

RFQ support for obsolete parts: Send the model number, required quantity and destination so DriveKNMS can confirm sourcing options before quotation.

Technical Specifications

Note: Electrical parameters (rated torque, rated speed, rated current) vary by exact firmware and drive pairing. Confirmed values are provided upon request with the specific application data.

Solving the Discontinued Hardware Crisis

The SIMOTICS S-1FK7 series was the backbone of Siemens servo technology through the late 1990s and 2000s. It was designed to operate in closed-loop vector control with SIMODRIVE 611 and later SINAMICS S120 drive modules. Thousands of machines — CNC lathes, milling centers, injection molding machines, and web-fed printing presses — were built around this motor family and remain in productive service today.

Siemens has progressively migrated its servo portfolio toward the 1FK7 High Inertia and 1FT7 families, and the specific order codes within the original 1FK7 compact range, including the 1FK7063-2AF71-1RH1, are no longer available through standard distribution channels. This creates a structural supply gap: the machines are still running, the production targets still exist, but the replacement parts are no longer manufactured.

For plant managers facing this situation, the strategic options are:

Option 2 – Controlled spare parts banking: Purchasing 2–3 units of the 1FK7063-2AF71-1RH1 and storing them under controlled conditions (temperature-stable, anti-static, humidity-controlled) extends the operational runway of the existing machine by 5–10 years with no engineering intervention required.

The 1FK7063-2AF71-1RH1 is a direct drop-in replacement for any machine originally specified with this exact order code. No re-parameterization of the drive is required if the replacement unit carries the same encoder type and brake configuration.

Condition & Reliability Assurance

Q: How are RFQ terms confirmed?
A: Quantity, required condition, documentation needs, destination and sourcing route are confirmed during RFQ review before quotation.

Step 2 – Winding resistance and insulation test: Phase-to-phase resistance balance and insulation resistance measurement (megohm test at 500 V DC). Any winding showing asymmetry or degraded insulation is quarantined.

Step 3 – Encoder signal verification: The incremental encoder output is verified on a test bench for signal integrity, quadrature accuracy, and index pulse presence. Encoder failure is a common failure mode in stored legacy motors due to bearing grease migration into the encoder disk.

Step 4 – Holding brake functional test: The integrated holding brake is energized and de-energized to confirm correct engagement torque and release response. Brake coil resistance is measured against specification.

Step 5 – Electrolytic capacitor and firmware review (where applicable): For units with integrated electronics, capacitor condition is assessed. Firmware version is documented and disclosed to the buyer prior to shipment.

Units that pass all five stages are classified as QA-Verified and shipped with a DriveKNMS inspection report. Units that pass visual and electrical checks but show cosmetic wear are classified as Refurbished – Tested and priced accordingly.

Key Features for System Maintenance

Drop-in replacement compatibility: The 1FK7063-2AF71-1RH1 is a direct mechanical and electrical substitute for any machine originally built with this order code. Flange dimensions, shaft diameter, encoder interface, and brake voltage are identical to the original specification. No mechanical adaptation is required.

No engineering reconstruction cost: A retrofit to a current-generation Siemens servo motor requires new motor cables, new encoder cables, updated drive firmware, updated motor data blocks in the CNC, and in many cases mechanical adapter flanges. The total engineering and parts cost for a single axis retrofit is typically USD 8,000–25,000. A verified spare 1FK7063-2AF71-1RH1 eliminates this cost entirely for the duration of the machine's remaining service life.

Q: Can you support multi-unit or repeat RFQ requests?
A: Yes. Send the model list, target quantity and destination so DRIVEKNMS can review sourcing options and quote the requirement as a project RFQ.