Bridgeport 3-axis CNC Retrofit Knee Mill
Centroid M39 CNC Control, Retrofit completed August 2025
plus Power Knee, Power Drawbar,Thumb Drive, Download CAM, Tooling
Centrol M39 3-axis CNC control (APC power backup for the control drive)
Full 3-axis Control (X, Y, Z) with capabilities of adding 4th axis drive.
Servo drive on knee
G-Code, Graphics and CAD-CAM download capable (Standard posts available online)
Mist spray (no tank include)
Auto-Lube
Tooling, lots of R8 tools and other accessories
Power Lock - Power Draw Bar
This machine is in near perfect condition - Watch The Video
New Bridgeport or equal cnc knee mill would cost $28-32K
Training available in Colorado; installation available within 100 miles of Denver
Table travel (X-Axis) 36”
Saddle Travel (Y-Axis) 12”
Quill Travel 5”
Knee Travel (Z-Axis) 16”
Ram Travel 12”
Throat Distance (Min.) 18.75”
Throat Distance (Max.) 6.75”
Standard 48” x 9”
T Slot center distance 3 @ 2.5” centers
T-Slot Size 0.625”
Height above Floor (Max.) 47.25”
Weight of Work piece (Max.) 750 lbs.
Power Rating Continuous 2 HP
Tooling R-8 Collets Capacity
Power Quill Feed 3 3/4” Diameter
Manual Drilling Capacity 3/4” Mild Steel
Boring Range 6” Mild Steel
Spindle Diameter 1.875 in
Quill Diameter 3.375”
Speed Range
High (Infinitely Variable) 500-4200 rpm
Low 60 – 500 rpm
Power Quill Feed 0.0015”/rev
Manual Adjust 0.003”/rev, 0.006”/rev
Actual Floor Space 64” x 68”
Actual Height 82”
Estimated Weight 1950 lbs.
We use cookies to improve your experience. Privacy Policy.