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340-20 TG Cincinnati

GRINDERS, CENTERLESS
Manufacturer:
CINCINNATI
Model:
340-20
Year:
1969
Stock #:
6940
#340-20 DE Cincinnati Centerless Grinder, Gib ways, 6” Reg. spindle, Infeed Comp., 20” Thrufeed Workrest with Guides, Profile Dressing on R.W., As Is
Size Capacity3 1/2"3 1/2"

340-20 DE CINCINNATI TWIN GRIP CENTERLESS GRINDER
S/N 6M20HG5UN-4
STANDARD CATALOG SPECIFICATIONS
CAPACITY (Work rest bar grinding fixtures are not
          included as standard equipment.)
Standard thru feed and infeed work rests...... 1/2" 3" dia.
Maximum work diameter......................... 6"
(Depending on which work rest is ordered)
WHEELS (Not included as standard equipment.)
Grinding Wheel                 Regulating Wheel
12" Hole                            6" Hole
20" Width only                   20" Width only
24" Maximum diameter      14" Maximum diameter
16" Minimum diameter       10 1/4" Minimum diameter
GRINDING WHEEL SPINDLE
High grade alloy steel, heat treated, titanium dioxide coated & ground.  Filmatic bearings self adjusting for variations in load with plain thrust bearings in center.  Automatic circulating lubrication under pressure.
REGULATING WHEEL SPINDLE
High grade alloy steel, heat treated, titanium dioxide coated and ground.  Two piece bronze front and rear bearings; anti friction radial and thrust bearing on end.  Automatic pressure lubrication.
REGULATING WHEEL SPEEDS
     Number: Infinite
     Range: 60 cycle: 11 300 RPM, 50 cycle: 12 to 315 RPM
 Low range: 60 cycle: 11 56 RPM, 50 cycle: 12 to 59 RPM
High range: 60 cycle: 56 300 RPM, 50 cycle: 59 to 315 RPM
GRINDING WHEEL DRIVE
Enclosed motor on end of machine.............. 40 HP
Constant speed:  N.E.M.A. dim., 50 or 60 cycle, 3 phase,
208 or 575 single; 230/460 dual voltage A.C. drives grinding
wheel only.
Power transmission............................ 8 V belts
REGULATING WHEEL DRIVE
After market regulating drive.
CUTTING FLUID EQUIPMENT
Individual motor driven cutting fluid pump capacity 30GPM
Cutting fluid tank capacity................... 75 gallons
SIZING ADJUSTMENT
Accurate adjustment of regulating wheel slide by in feed hand wheel graduated in fifty millionths of an inch.
Thru feed push button compensation fine and coarse feed.
WHEEL TRUING
Independent truing units for each wheel.  Hydraulic diamond truing for grinding and regulating wheel.  Diamond not included as standard equipment.
(Profile both sides.)
DIMENSIONS
Floor space............................. 114 x 158-1/16”
Weight.................................. 23,500 lbs. approximate
EQUIPMENT & FEATURES
20” Thru feed work rest with guides.
Attached electrical panel.
Gib ways.
6” Reg. spindle.
Profile dressing on R.W.
Profile dressing with auto diamond advance on G.W.
Infeed compensation.
Specifications are deemed accurate, however, subject to verification or prior sale.

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