1993 Okamoto 8" x 20" Hydraulic Surface Grinder Model - 820DX S/N - 62249
CAPACITY:
Maximum Grinding Length x Width - 20" x 8"
Minimum/Maximum Distance From Underside of
8" Diameter Grinding Wheel to Top of Table - 1.9"/15.7"
Maximum Weight of Workpiece on Table
(inclusive of magnetic chuck) - 440 lbs.
TABLE:
Surface Length x Width - 21.65" x 7.90"
Maximum Longitudinal Travel - 25.6"
Maximum Cross Travel - 9.05"
FEEDS:
Longitudinal Movement of Table, Hydraulic - 1-82 FPM
Longitudinal Movement of Table, Hand - 1.85"
CROSS MOVEMENT OF SADDLE:
Hydraulic Intermittent Feed - 0.02" - 0.5"
Hydraulic Continuous Feed - 4-40 IPM
Longitudinal Movement of Saddle, Hand - 0.25"
Graduation Of Handwheel - .001"
VERTICAL MOVEMENT OF WHEELHEAD:
Automatic Feed Per Stroke of Table - .00005" - .0015"
Automatic Feed Per Reversal of Saddle - .00005" - .0015"
Graduation Of Handwheel - .0001"
Hand Feed Per Revolution - 0.01"
GRINDING WHEEL:
Size - 8" Diameter x 1.25" Bore x 1" Width
Speed - 3,600 RPM
EQUIPPED WITH:
Hydraulic Actuated Longitudinal and Cross Feeds
Servo Driven Automatic Incremental Down Feed of Grinding Wheelhead
in Programmable Coarse and Fine Increments from 0.00005" to 0.0015"
in Both the Plunge and Surface Grinding Modes of Operation
Automatic Cycle With Sparkout Timer From 0 to 5 Passes With Optimal
Automatic Table Stop at the Right End of its Setting Stroke at the Completion
of Grinding cycle.
Electronic Handwheel for Manual Vertical Movement with each Graduation
Equivalent to .00001", .0001" or .001"
Digital Display of Vertical Axis
Motorized Power Rapid Traverse to Grinding Wheelhead
8" x 20" Walker Hagou Electromagnetic Chuck with Variable Hold Control
Cartridge Type Grinding Wheel Spindle with Super Precision, Pre-loaded ball Bearings
Cross Feed Handwheel with Precision Ball Screw To Assure Accurate Positioning
Capability
External Coolant System with Magnetic Chip Separator and 1/8 HP Coolant
Pump Motor
1/2 HP 3/60/230-460 Volt Vertical Feed Motor (AC Servo)
1 HP 3/60/230-640 Volt Hydraulic Pump Motor
2 HP 3/60/230-460 Volt Spindle Drive Motor and Electrical Controls
Machine is Wired For 460 Volt Operation
Approximate Weight - 3,960 lbs.
Approximate Dimensions - 8' L-R x 6' F-B x 6' H
Condition - Good
PRICE: $14,500.00
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