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The Bridgeport logo as cast into the head of a Bridgeport Knee Mill. The patented "2J" head ensures that any heat buildup in the spindle bearings, belt, or quill area is kept to an absolute minimum. This results in increased belt and bearing life as well as consistent accuracy with no external cooling fans required, increasing rigidity and ...
Barden Corporation is a ball bearing manufacturer based in Danbury, Connecticut, USA with factories in Danbury, Winsted, Connecticut and in Plymouth, England.It previously had factories in Bridgeport, Connecticut (Lacey Manufacturing-divested in 2008) [1] and Haverhill, Massachusetts (Pope Spindle-divested in 2003).
The spindle can be oriented either vertically or horizontally. In practice most mills with rams also involve swiveling ability, whether or not it is called "turret" mounting. The Bridgeport configuration can be classified as a vertical-head ram-type mill. Van Norman Machine Tool Company specialized in ram-type mills through most of the 20th ...
This taper was designed by Bridgeport Machines, Inc. for use in its milling machines. R8 tapers are not self-holding, so they require a drawbar extending up through the spindle to the top of the machine to prevent loosening when lateral forces are encountered.
Edward Payson Bullard Jr. (July 10, 1872 – June 26, 1953) was an American engineer, president of the Bullard Machine Tool Company for 40 years, and inventor. He was awarded the ASME Medal in 1937.
It comprises a standard spindle and bearings in a steel cylinder with a slightly-modified bearing cup at each end. The cylinder, bearing and spindle are placed in the shell and held in place by the bearing cups, each of which has a narrow flange that bears against the edge of the shell. [8] Bayliss Wiley unit bottom bracket