Knee Mills & Vertical Machining Centers
Used Bridgeport EZ-Trak DX: Sell or Buy at Auction
The Bridgeport Series I knee mill is the most widely produced milling machine in American manufacturing history and is still the default toolroom mill in thousands of shops. The brand later passed to Hardinge, which carried it through the EZ-Trak CNC knee mills and the Torq-Cut and GX vertical machining centers. Used demand stays unusually deep for a design this old, because nearly every working machinist has run one and parts, tooling, and retrofit controls remain easy to source.
The Bridgeport EZ-Trak DX pairs a conversational 2-axis CNC control, upgradable to full 3-axis, with the same 9 by 48 inch knee-mill platform and R8 spindle that generations of manual Bridgeport operators already know. It is the newer of the two common EZ-Trak generations: the DX runs on a hard drive with a faster processor, versus the earlier SX's floppy-disk boot, so it holds up better and is easier to keep running today. That makes it a practical step into CNC for toolrooms and job shops that want programmable repeatability without abandoning a familiar Bridgeport footprint. KD Auctions reaches those exact buyers through its 500,000+ industry contacts.
Buying a Used EZ-Trak DX
Toolrooms, plant maintenance departments, prototype and R&D shops, job shops that want a manual mill alongside CNC capacity, trade schools and community colleges, and short-run fabricators. Manual Series I mills draw the largest and most local bidder pool at any machine shop auction because they move without a rigging crew; EZ-Trak, Torq-Cut, and GX buyers are shops looking for CNC capability in a small footprint.
Browse Upcoming Auctions →Selling Your EZ-Trak DX
A Bridgeport is one of the most reliably sold lots at a machine shop auction: there is always a bidder. What separates a strong result from an average one is condition rather than year, specifically table and way wear, leadscrew backlash, spindle noise, and whether the power feed, DRO, vise, and original tooling stay with the machine.
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Frequently Asked Questions
What is the difference between an EZ-Trak DX and an EZ-Trak SX?
Both run Bridgeport's EZ-Trak conversational CNC control on the same knee-mill platform, but the DX is the later generation: it boots from a hard drive on a faster processor and can be upgraded to 3-axis operation. The SX is the earlier generation, boots from floppy disk, and was built without room to add a third axis. That makes a DX generally the more capable and more serviceable machine of the two at auction.
How fast can KD Auctions sell my EZ-Trak DX mill?
A single EZ-Trak DX can be consigned into an upcoming CNC auction rather than waiting for a full shop sale, and a managed auction typically runs 6 to 10 weeks from engagement to payout. If it is part of a larger shop closure, we can dispatch an onsite team within 48 to 72 hours to catalog it with the rest of your equipment.
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About Bridgeport
The Bridgeport Series I knee mill is the most widely produced milling machine in American manufacturing history and is still the default toolroom mill in thousands of shops.
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