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With over 370,000 machines built over the past 70 years and counting, the Bridgeport® Series 1 Standard Knee Mill is the most popular milling, drilling and boring machine available and continues to fulfill the industry’s need for an accurate, reliable, and versatile mill.
|Series 1 KneeMill|
|Table travel with Power Feed (X-Axis)||
|Table travel without Power Feed (X-Axis)||
|Saddle Travel (Y-Axis)||
|Knee Travel (Z-Axis)||
|Throat Distance (Min.)||
|Throat Distance (Max.)||
|Spindle (2J Head)|
|Power Rating 30 min. Duty Cycle||
|Power Rating Continuous||
|Power Quill Feed 3||
|Manual Drilling Capacity||2 CI/min|
152 mm dia.
|High (Infinitely Variable)||500-4,200 RPM @ 60 Hz|
|Low||60-500 RPM @ 60 Hz|
|Power Quill Feed||0.0015 in/rev (0.038 mm)|
|Manual Adjust||0.003 in/rev (0.076 mm)|
|Manual Adjust||0.006 in/rev (0.152 mm)|
49 x 9 in
1,245 x 299 mm
|T Slot center distance||
3 @ 2.5 in
|Height Above Floor (Max.)||
|Weight of Workpiece (Max.)||
7 x 10 ft
2133 x 3048 mm
The Bridgeport Series I Standard Mill is the original milling, drilling and boring machine. The Bridgeport Series I Knee Mill is the most popular mill ever made with over 370,000 machines built over the past 70-plus years. Hardinge® is the only authorized provider of Bridgeport knee mills, parts, and service.
Innovative airflow cooling design that eliminates the need for external fans to prolong bearing life and prevent expansion from heat build-up.
One-Shot Lubrication System Chrome-Plated Ways and Gibs Color—Machine Tool Gray
2 or 3-Axis Digital Readout
Power Drawbar for R-8 or #30 Quick-Change Spindle Worklight Electrics—NFPA/NEMA-12 Standards, optional NRTL testing
A full range of accessories are available, including optional chrome-plated ways and gibs, to ensure that the machine will last a lifetime.
The Bridgeport Series I Standard Knee Mill is the single most ubiquitous milling, drilling, and boring machine in the world. It can be found in job shops across the globe serving in countless capacities.