![]() ![]() The answer to that was the Bridgeport Series II. They loved the features of the original Bridgeport knee mill but wanted to remove more material faster-and from larger workpieces. Some people in the metalworking industry needed a milling machine with more muscle. The Bridgeport Series II is a Series I on Steroids However, although the Series I was rigid, accurate, and versatile, some people wanted something bigger and more powerful, and by 1970, the Bridgeport Series II had arrived on the scene. The Series I was ideal for manufacturers, small repair shops, vocational-technical schools, and hobbyists. ![]() Its reputation as a multi-purpose machine is enhanced by its two prominent features: a moveable, sliding ram to increase its range and a rotating turret that can be repositioned for milling angles. The Bridgeport Series I Standard Knee Mill’s versatility stems from its capabilities that include milling, drilling, tapping, slotting, and boring. They continue to fulfill the manufacturing industry’s need for an accurate, reliable, and versatile manual milling machine. Hardinge, the current manufacturer of the Bridgeport Series I knee mill, estimates that over 370,000 Series I machines were built over the last 80-plus years. Over the years, their popularity grew, and the Series I gained a reputation for being the best vertical milling machine on the market. Eventually, an entire market grew out of Bridgeport milling machine clones that came to be known as Bridgeport-type knee mills or vertical milling machines. The original Bridgeport milling machines were manufactured in Bridgeport, Connecticut, in 1938. Bridgeport Invents the Modern Manual Milling Machine The Bridgeport mills in your machine shop may have also included Acu-Rite 2-axis digital readouts (DRO), power feed on the X-axis, chrome ways, one-shot lubrication, and maybe even a power drawbar. They were popular in metalworking shops throughout the world and for good reasons.Īlthough you might have worked on a Series I with an M head, if you were lucky, your machine shop’s Bridgeport mills had J heads with step pulleys or, better yet, 2J heads with vari-speed and quill feed. If you were a machinist a generation or so ago, you likely worked in a machine shop that owned several of these iconic knee mills. Years before the advent of the CNC machine tool, there was the Bridgeport milling machine. ![]() MX Electric Edge Finder and Z Axis Touch Plateħ Lathes & CNC Milling Machines Built in Irwindale, California USA.CNC 1440 Lathe Benchtop Turning Center Catalogue.– CNC SUPRA® Vertical Knee Mill 9 x 49 or 10 x 54. ![]()
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