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With over 400,000 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 | SERIES 1 CNC | |
| X-Axis Table Travel | ||
| Without Power Feed | 36" (914mm) | N/A |
| With Power Feed | 33" (838mm) | 33" (838mm) |
| Y Axis Travel | ||
| Without Power Feed | 12" (306mm) | |
| With Power Feed | 12" (306mm) | |
| Quill Travel | 5" (127mm) | 4.03" (102mm) |
| Knee Travel | 16" (406mm) | |
| Ram Travel | 12" (306mm) | |
| Throat Distance | ||
| Min | 6.75" (171mm) | |
| Max | 18.75" (476mm) | |
| Table to Spindle Nose | ||
| Min | 2.5" (64mm) | |
| Max | 18.25" (463mm) | |
| TABLE | ||
| Overall Size | 9" x 49" (299 x 1245mm) | |
| Working Surface | 9" x 49" (299 x 1245mm) | |
| Number of T-Slots | 3 | |
| T-Slot Centers | 2.5" (64mm) | |
| T-Slot Size | 0.625" (16mm) | |
| Height Above Floor Maximum | 47.25" (1200mm) | |
| Weight of Workpiece Maximum | 750lbs. (340kgs) | |
| SPINDLE CONSTRUCTION | ||
| Spindle Diameter | 1.875" (48mm) | |
| Quill Diameter | 3.375" (86mm) | |
| SPINDLE MOTOR HP | ||
| 30 Min Duty Rated | 3HP | |
| Continuous | 2HP | |
| SPINDLE TAPER | ||
| Standard | R-8 | |
| Optional | NMTB30 | |
| SPINDLE SPEED RANGE | ||
| Low Range | 60 - 500 RPM | |
| High Range | 500 - 4200 RPM | |
| QUILL FEED RANGE (3) | and 2 Axis CNC | 3 Axis CNC |
| Range #1 | 0.0015 "/rev | Program Range |
| Range #2 | 0.003"/rev | 0-100 IPM |
| Range #3 | 0.006"/rev | |
| MACHINING CAPACITIES | ||
| Power Quill Feed Drilling (mild steel) | 3/8" (9.5mm) | |
| Miling (mild steel) | 2 CI/min | |
| Boring Range (mild steel) | 6" Dia (152mm) | |
| POSITIONING | ||
| Feedrate Range | N/A | 0-100 IPM |
| Minimum Increment | N/A | 0.0001" |
| SPACE AND WEIGHT | ||
| Floor Area | 84" x 120" (2140 x 3048mm) | |
| Height | 87" (2210mm) | |
| Net Weight | 1930lbs (875kgs) | |
| Shipping Weight | 2075lbs (941kgs) | |
| ELECTRICAL SUPPLY | ||
| Input Power | 208/230/460 | 208/230/460 3 phase 50/60 cycle |
| 3 phase 50/60 cycle | 110/1/60 for Control | |
| Power Capacity | 4 KVA | 4 KVA / 15Amp CTRL |
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 400,000 machines built over the past 70-plus years.
Standard Features
Optional Features
To see the full range of accessories available, please Contact Us to receive a quote.
The Bridgeport Series I Standard Knee Mill is the single most ubiquitous manual milling, drilling, and boring machine in the world. It can be found in job shops across the globe serving in countless capacities.
