Okamoto ACC-8.20EX

Nominal grinding capacity – 8" x 20"
Maximum height under 12" wheel – 15.7"
Table load capacity incl. chuck – 440 lbs
Table speed, infinitely variable – 3' to 82' FPM
Longitudinal table, handfeed per revolution – 1.85"
Max. longitudinal table movement, manual – 25.6"
Auto crossfeed increment – 0.02" to 0.80"
Auto continuous crossfeed – 0.010 to 40' FPM
Manual pulse feed (x.1, x1, x10) – 0.0001"/0.0005"/0.002"
Max. crossfeed – 8"
Auto incremental downfeed (10) – 0.00005" to 0.0015"
Sparkout passes – 0 to 5
Vertical per revolution – 0.001" (x.1) / 0.010" (x1) / 0.100" (x10)
Vertical handwheel graduation – 0.00001" (x.1) / 0.0001" (x1) / 0.001" (x10)
Power rapid wheel positioning rate – 40" IPM
Spindle motor – 2 HP
Wheel size – 8" dia. x 1"W x 1.25"B
Wheel speed – 6,500 SFPM
Grinding wheel speed – infinitely variable RPM
Approx. dimensions for operation – 95" x 73"D x 71"H
Approx. machine weight – 4,620 lbs

Fanuc MDI/CNC control with 9" CRT display
2-axis CNC (Y/Z axes)
Simple quick teach set-up cycle
Capacity to grind 3 surfaces in a single set-up
Servo-driven ballscrews on downfeed and crossfeed
Fully automatic grind cycle with rough, fine, shift-plunge, and rapid wheelhead retraction
Fully automatic over-the-wheel dresser programmable with auto dress, wheel wear compensation, and air-cut allowance
Interrupt cycle at any time to dress with rapid return after compensation

Equipped with:
8" x 20" O.S. Walker fine-division LBP electromagnetic chuck
Variable hold neutrofier control and demagnetizer
Toshiba G3 Tosvert-130 electronic variable frequency drive (VFD)
Coolant system with paper separator
See-through front guarding
2 HP Yaskawa spindle motor