10" x 31" CINCINNATI MODEL R-77 PRODUCTION UNIVERSAL TOOL ROOM PRECISION CENTERTYPE GRINDING MACHINE
Motor Driven with 4 HP, 3 Phase, 60 Cycle AC Wheelhead Motor. 1/3 HP, 3 Phase, 60 Cycle AC Headstock Motor. 1 HP, 3 Phase, 60 Cycle AC Hydraulic Pump Motor. 3 Phase, 60 Cycle AC Motors for Coolant Pump and Wheelhead Lubrication Pump with Controls.
Plunge Grinding. Swivel Wheelhead. Swivel Headstock. Combination Live or Dead Headstock Spindle. Manually Operated Footstock. Automatic Dual Rate Infeed With Indicator. Infinitely Variable Hydraulic Traverse. Two-Speed Table Traverse Hand Wheel. Infinitely Variable Headstock Speeds. Automatic Pickfeed at Table Reversal. Wheelhead Hydraulic Advance and Retraction. Sparkout Timer. Automatic Lubrication to Table and Wheelhead Ways. Micrometer Positive Table Stop. Side And Angle Truing Attachment. (2) Backrest With 5/32" - 2.75" Work Capacity. 3-Point Steady Rest. (2) Spare Wheel Hubs. Face Grinding Truing Device. (2) Table Mounted Dressers. Table Swivel Indicator. Miscellaneous Assortment Of Wheel Mounts. Free Standing Hydraulic System and Coolant System.
Maximum Size of Grinding Wheel: 16" x 2" x 5"
Table Traverse Speeds (Infinitely Variable): 2-240 IPM
Table Traverse per Reverse of Handwheel: .1"- .5"
Min. Movement Necessary to Rev. Table: 5/32"
Maximum Swing of Table +10 Deg.
No. & Range of Headstock Speeds (Inf.)56-480 RPM
Diameter of Bore of Spindle: 1.4"
Footstock Center Taper (Jarno): No. 8
Footstock Quill Retraction: 1"
Wheelhead Rapid Advance Stroke: 2"
Manual Infeed per Handwheel Revolution: .050"
Auto. Pickfeed on Diameter (8 Steps): .0002" - .0016"