USED 1981 BRIDGEPORT SERIES I
Overview
The Bridgeport Series I Knee Mill is one of the most iconic manual milling machines ever produced. Renowned for its versatility, durability, and precision, the Series I has been the backbone of toolrooms and maintenance departments for generations. Its variable-speed head, rigid knee design, and wide selection of available tooling make it suitable for drilling, boring, slotting, and light production milling operations. Used Bridgeport Series I knee mills remain in high demand due to their long service life, ease of operation, and adaptability across industries ranging from aerospace and defense to education and general manufacturing. MachinesUsed.com regularly buys, sells, and consigns Bridgeport Series I mills in a variety of configurations and conditions.
Specs
Table Size:: 9" x 48"
Longitudinal Travel:: 36" for 48" Table
Cross Travel:: 12"
Quill Travel:: 5" Hand or Power Feed
Knee Travel:: 16"
Power Quill Feeds:: (3) .0015 / .003 / .006 IPR
Spindle Taper:: R-8
Spindle Speeds:: 60-4200 RPM Variable Speed in 2 Ranges
Spindle Nose to Table Min-Max:: 2.5" - 18.75"
Spindle Center to Column Distance:: 6.75" - 18.75"
Overarm Ram Adjustment:: 12" Manual Adjustment
Max Table Load:: 750 Lbs.
Head Swivel Left to Right:: +/- 90 Degrees
Head Tilt Front to Back:: +/- 45 Degrees
Spindle Drive:: 2 HP
Equipped With
Variable Spindle Speed 60-4,200 RPM in 2 Ranges, R8 Spindle Taper, 5" Power Quill Feed, Anilam Wizard 211 2-Axis Digital Readouts, , Servo 150 X-Axis Variable Speed Power Table Feed, Bridgeport Varibal Speed Power Cross Feed(Not working), 4" Column Riser, 9" x 48" Table, Knee Handle, Quil Handle, Draw Bar, 1-Shot Lubrication
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