Bridgeport Series 1 Knee Mill 4200 RPM

Bridgeport Series 1 Knee Mill

Variable Speed 2 HP 2J Head,
9" x 42" Table,
Chrome Ways,
Bridgeport X Axis Power Feed,
Bridgeport Power Draw Bar
Acu-Rite X & Y Digital Read Out,
Bijur One Shot Lube.
R8 Spindle
Light

SERIES I
Range
Table Travel (X-Axis, end of table to end of saddle)
without Power Feed 31in. (787mm)
Saddle Travel (Y-Axis) 12in. (305mm)
Quill Travel 5 in. (127mm)
Knee Travel (Z-Axis)* 16 in. (406mm)
Ram Travel 12 in. (305mm)
Throat Distance (min.) 6.75 in. (171mm)
Throat Distance (max.) 18.75 in. (476mm)
Table to Spindle Nose Gage Line
(min.) 2.5 in. (64mm)
(max.) 18.25 in. (463mm)

Table
Overall Size 42 x 9in.
Working Surface 42 x 9in.
T-slots Centers 3 @ 2.5in. (64mm)
T-slot Size 0.625in. (16mm)
Height above Floor (max.) 47.25in. (1200mm)
Weight of Workpiece (max.) 750lbs. (340kg.)
Spindle (2J Head)
AC Power Rating
(30 min. duty cycle) 3 HP (2.2 kW)
(continuous) 2 HP (1.5 kW)
Spindle Taper R-8
Tooling R-8 Collets
Speed Range
High (infinitely variable) 500 – 4200 RPM @ 60 Hz
Low 60 – 500 RPM @ 60 Hz
Power Quill Feed (3) 0.0015 in./rev (0.038mm)
0.003 in./rev (0.076mm)
0.006 in./rev (0.152mm)
Drilling Capacity
Power Quill Feed 3/8 in. (9.5mm)
Milling Capacity (mild steel) 2 CI/min.
Boring Range (mild steel) 6 in. dia. (152mm)
Spindle Diameter 1.875 in. (48mm)
Quill Diameter 3.375 in. (86mm)
Positioning
Feedrate Range (X, Y) 0.50-35 ipm (13-889mm/min)
Minimum Increment 0.0001in. (0.003mm)
Space and Weight
Floor Area 8.3 x 7.8 ft. (2.53 x 2.4m)
Height 87 in. (2.21m)
Net Weight 1930 lb. (875kg)
Shipping Weight 2075 lb. (941kg)
Power
Input Power 208/230/460 volts
3 phase, 50/60 cycle
Power Capacity 4kVA