Cincinnati 470 E.C. 2 AXIS STEP GRINDER

14 x 60 x 30 CINCINNATI 470 E.C. 2 AXIS STEP GRINDER
New: 1982

STANDARD SPECIFICATIONS
Workpiece Capacity
Max. work piece diameter - new wheel.......... 14"
Max. diameter (driver) swing over table....... 14.93"
Max. work piece/grind length - actual......... 60"

Wheelhead
Grinding wheel surface speed with 30"
new wheel. . . ............................... 8500 FPM
Grinding wheel spindle speeds................. 902 RPM
Wheel head motor drive @ 1800 RPM............. 25 HP
Wheel head in feed resolution (on diameter)... .00002"
Wheel head positioning rate -
(One diameter to next diameter)............... 4.8 IPM
Sliding Table
Table travel - 60 in size table............... 68"
Table feed resolution......................... .0002"
Table traverse rate - max..................... 99.99 IPM
- min..................... .10 IPM

Swivel Table
Length between standard head stock and
Foot stock centers - 60 in. size table........ 61.00"
Swivel degrees clockwise - 60 in. size table.. 8
Swivel degrees counter-clockwise -
60 in. size table............................. 2
Work piece diameter - 60 in. size table....... 3.38"
Distance across table dovetail -
(Sharp corners)............................... 9.50"
Wheel Mount
Collet (wheel) hole sizes: 30 in. dia......... 20"
Wheel Guard
Wheel guard (wheel width) ranges.............. 4.00"
Hydrostatic Truing
470 x 0 grinder -
Max. step in wheel (depth).................... 1.25"
Min. step in wheel (width).................... 1.00"
Max. swivel table truing angle................ 10
Truing traverse rate - max. (approx.)......... 15.00 IPM
min. (approx.)......... 1.50 IPM
Rapid traverse................................ 1.75 to 3.32"
Between wheels - adjustable dog range......... 2.75 to 4.44"
3.82 to 6.56"
Diamond nib - chisel point angle.............. 60
- carat (maacle shape) size....... .33

Headstock
Head stock spindle speed range (nominal)...... 10 to 500 RPM
Motor speed................................... 290 to 2448 RPM
Motor torque @ 3000 RPM....................... 63 lbs.-in.
Spindle nose (live spindle) type.............. A1 - Size 6
Center Taper (60 included angle)............. 14 Jarno
Max. work piece weight, chuck face plate held work -
combined weight of work and chuck with work extending 6.00"
from spindle nose............................. 300 lbs.
Work piece diameter range..................... .25 to 2.50"
Footstock - Manual Lever/Spring or Handwheel Operation
Eccentric quill adjustment -
Either side of the true horizontal
centerline - max.............................. .005"
Spindle (Quill) offset - min -
Dial graduation = ............................ .0005"
Center height from floor level -
470 x 14"..................................... 45.50"
Max. total work piece weight @ max. lever & spring
tension, spindle (quill) advanced .75"........ 330 lbs.
Max. total work piece weight, hand wheel, spindle
(quill) advanced .75"......................... 1000 lbs.
Hydraulic Pump & Tank
Capacity - normal operation level............. 25 gal.
- max. level......................... 26.5 gal.
- min. level......................... 19 gal.

CM oil specification -
Type.......................................... P-45
Viscosity - S.U.S. @ 100 F (38C)............ 95 to 115
Main pump @ 1800 RPM -
Operating pressures........................... 275 PSI and 120 PSI
Max. flow @ 275 PSI (18,96 bar)............... 15 GPM
Motor drive horsepower........................ 3 HP
Motor drive frame............................. 182T
Behind-the-wheel truing Tandem pump @ 1800 RPM -
Operating pressure............................ 500 PSI
Max. flow @ 500 PSI........................... 1.2 GPM
Motor drive horsepower (tandem)............... 3 HP
Lubrication Pump & Tank
Capacity - normal operation level............ 6.3 gal.
- max. level........................ 6.8 gal.
- min. level........................ 4.2 gal.

CM oil specification -
Type.......................................... P-47
Viscosity - S.U.S. @ 100 F (38C)............ 284 to 346
Pump @ 1800 RPM -
Operating pressure............................ 60 PSI
Max. flow @ 60 PSI (4,13 bar)................. .4 GPM
Motor drive horsepower........................ .25 HP
Motor drive frame............................. 56
Single oil filtration rating.................. 10 microns
Pneumatic System
Supply pressure............................... 60 to 80 PSI
Reduced pressure to head stock seal........... 3.5 PSI
ADDITIONAL FEATURES
Cincinnati E.C. controls, Acramatic 700G
Auto balancing grinding wheel spindle
Wheel guard mounted hydraulic truing with auto diamond advance
Free standing electrical panel
External hydraulic unit