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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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Bridgeport 501-04303-02 Servo Control Board

$1,199.99 USD

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✓ 30-day returns on every item — return policy

ConditionSurplus - Untested MPN501-04303-02 Stock #0226-00458

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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Used in Bridgeport Series II CNC milling machines, the Bridgeport Servo Control Board carries OEM part number 501-04303-02, with assembly reference 502-03417-02, REV2, dated 1/89. The board is labeled "SERVO CONTROL" directly on the PCB silkscreen and is associated with the SBX3 designation common to Bridgeport Interact platform controls. The board features a DAC811AH digital-to-analog converter, a dense population of HCMOS logic ICs including MM74HC and MC74HC series devices from multiple manufacturers, and NEC memory components visible on the component side. Multiple edge connectors are present along the bottom and right edges for integration into the machine control backplane. The reverse side shows a multilayer through-hole design with gold-plated edge fingers. This is a large-format board measuring approximately 14 by 10 inches. Serial number A80775 is visible on the barcode label. The board dates to January 1989 and is consistent with the Bridgeport Series II Interact CNC control architecture of that period. MPN 501-04303-02 is the primary OEM identifier. Compatible machine platforms and exact system requirements should be verified against Bridgeport Interact Series II service documentation prior to installation.

Stock # 0226-458

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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.