6" chuck Acme Gridley Model RPA-8 8-Spindle Automatic Chucking Machine
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6" Chucks, 8 Spindles, High-speed drilling, Threading, 947 RPM, 40 HP.
Acme Gridley 6" RPA-8 Multi Spindle Chucking Machine
Maximum Swing: 6"
End Tool Slide: 7"
Cross Slides-
Lower: 4.5"
Upper: 3.5"
Minimum RPM: 71
Maximum RPM: 947
Motor Horsepower: 40
RPM of Drive Pulley: 610
Work Spindle Speeds-
Right Hand (Slower than work spindle): 0.14734
Left Hand or Back Off (Faster than work spindle): 0.48962
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