Bridgeport Series 1 Vertical Milling Machine 1981’USA #7621

Bridgeport Series 1 Vertical Milling Machine 1981’USA #7621
Reference # 7621
Model # Series 1
Serial # 220404
Year of manufacture- 1981’
Table working surface- 9“ x 48”
Number of t-slots- 3
Ranges-
Longitudinal- 32-1/2”
Cross- 12”
Vertical, knee- 16”
Quill-5”
Maximum/Minimum distance, spindle nose to top of table- 18.5"/2.5"
Maximum/Minimum distance, centerline of spindle to face of column- 18.75"/6.75"
Ram travel- 12”
Head tilt, left & right- 90 degrees
Head tilt, front to rear, each way- 45 degrees
Turret rotation- 360 degrees
(3) Power quill feeds- - .0015, .003, .006 I.P.R.
Infinitely variable spindle speeds, two ranges- 60-4,200 R.P.M
Spindle taper- R-8
Maximum collet capacity- ¾”