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Most orders ship within 1–2 business days via UPS. Larger equipment ships via freight carrier, and customers can use the shipping estimator on the product page for a location-specific quote. Local pickup is also available at the Fairfield, IL facility, typically ready within 4 hours.

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Siemens 6FC5203-0AF21-0AA1 SINUMERIK CNC Full Keyboard 5V USB Inspected Surplus - Appears Unused

$749.99 USD

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✓ 30-day returns on every item — return policy

ConditionInspected Surplus - Appears Unused MPN6FC5203-0AF21-0AA1 Stock #0126-00052

30-day returns on every item. Photos reflect the actual item’s current condition — see our return policy and condition guide.

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⚡ Same-day shipping available — order by 11 am CT ($100 add-on at checkout)

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The Siemens 6FC5203-0AF21-0AA1 is a SINUMERIK CNC Full Keyboard, model KB 310C, designed for use with Siemens SINUMERIK 840D CNC control systems. The nameplate confirms the article number 6FC5203-0AF21-0AA1, drawing number A5E00285373, hardware status FS: D, type designation T M86002760, and a unit weight of 1.8 kg. The unit is identified on the nameplate as "USB, KEY" and is part of the SINUMERIK operator component family used in industrial machining environments.

The KB 310C features a 310 mm wide footprint and a full QWERTY layout with USB mechanical keys, providing tactile feedback for data entry, program editing, and CNC navigation tasks. The keyboard connects to the operator panel front or PCU via USB, with a 1.5 meter integrated cable. Power is supplied through the USB interface, so no external supply is required. Markings on the nameplate include CE, UL Listed (Industrial Control Equipment, file 58RA), EAC, and KCC REM S49 SINUMERIK regulatory certifications. The unit is manufactured by Siemens AG, Frauenauracher Str. 80, DE 91056 Erlangen, Germany.

Compatible host systems include the SINUMERIK 840D, 840Di, and operator panel fronts such as OP 010, OP 012, and PCU 50 platforms that accept a USB QWERTY operator keyboard. Typical applications cover CNC milling machines, turning centers, grinding machines, and machining cells where a full alphanumeric operator interface is required at the control panel. The article number, drawing number, and serial number are visible on the rating label for verification against installation documentation and spare parts catalogs.

Stock # 0226-052

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Frequently Asked Questions

Shipping & Handling

Most orders ship within 1–2 business days via UPS, but expedited same-day handling is available as an add-on to orders in cart. Larger equipment ships via freight carrier. Use the shipping estimator above for a location-specific quote. Local pickup is also available at our Fairfield, IL facility, typically ready within 4 hours.

Returns & Condition

All items are sold as-described based on the photos and condition listed. If an item arrives differing from its description, it may be eligible for return or refund. See our full condition guide for details on our grading terms.

Payment Options

We accept all major credit cards, PayPal, and Shop Pay. Purchase order and wire transfer payment is also available by selecting "Purchase Order / Wire Transfer" at checkout. Payment is due prior to shipment. Contact us for custom terms on established accounts. Tax exemptions are honored if proper documentation is provided.