Pratt & Whitney Precision Jig Borer / Ref.#55-91
Model No. 4E
Serial No. 24454


*Excellent Condition
Specification Description
Built-in Motorized Rotary Table
20" Extra Column Height
Ball Roll Quill

Rectangular Table Size: 36" x 78"
Rotary Table Size: 48"
Table Travels, Longitudinal: 60"
Table Travels, Cross: 36"
Vertical Travel of Head on Column: 17"
Spindle Quill Travel: 10"
Min. Distance Spindle Nose to Table Top: 20 1/2"
Max. Distance Spindle Nose to Table Top: 47 1/2"
Spindle Center to Column Neck: 36 1/2"
Spindle Center to Column Ways: 18 1/2"
Spindle Speeds: 31 - 1500 RPM
Quill Feeds, Per Revolution: .0005" to .015"
Table Power Feeds, Variable: 1 to 15 IPM
Rapid Traverse Rate: 60 IPM
Machine Weight: 45,000 lbs.
Overall Height: 147"

3 Hp 4-Speed Spindle Drive 440/3/60