Cincinnati No. 340-20 Mdl. DE, twin grip centerless grinder, 6" diameter work capacity, 20" thru-feed work rest, 24" diameter x 20" width grinding wheel, 40 HP, 1971

#340-20 DETwin-Grip CincinnatiCenterless Grinder, 20" Thrufeed Workrest, Servo Trans, Attached Electrical
340-20 DE CINCINNATITWIN GRIP CENTERLESS GRINDER
S/N 350520H73-0058Year: 1971
STANDARD CATALOG SPECIFICATIONS
CAPACITY (Work rest bar grinding fixtures are not
included as standard equipment.)
Standard thru feed and in feed 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
PRIVATE 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.tc' \l 1 High grade alloy steel, heattreated, titanium dioxide coated ground.'Filmatic bearings self adjusting for variations in load with plainthrust bearings in center.' Automaticcirculating lubrication under pressure.
REGULATING WHEEL SPINDLE
PRIVATE 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.tc' \l 1 High grade alloy steel, heattreated, titanium dioxide coated and ground.'Two piece bronze front and rear bearings; anti-friction radial andthrust bearing on end.' Automaticpressure 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
Motor mounted on upper slide - 60 cycle: 2 HP @ 1200 RPM
50 cycle: 2 HP @ 1500 RPM
Constant speed; N.E.M.A. dim., 50 or 60 cycle, 3 phase,
208 or 575 single; 230/460 dual voltage A.C.
Power transmission............................V-belt chain
Speed changes:........ Variable pitch sheaves and gear shift.
CUTTING FLUID EQUIPMENT
Individual motor driven cutting fluid pump capacity 30GPM
Cutting fluid tank capacity................... 75 gallons
SIZING ADJUSTMENT
PRIVATE Accurate adjustment of regulating wheel slide by in feed hand wheel graduated in fifty millionths of an inch.tc' \l 1 Accurate adjustment of regulatingwheel slide by in feed hand wheel graduated in fifty millionths of aninch.
Thru feed push button compensation fine and coarse feed.
WHEEL TRUING
PRIVATE Independent truing units for each wheel. Hydraulic diamond truing for grinding and regulating wheel. Diamond not included as standard equipment.tc' \l 1 Independent truing units for eachwheel.' Hydraulic diamond truing forgrinding and regulating wheel. Diamond not included as standardequipment.
(Profile both sides.)
DIMENSIONS
Floor space............................. 95 1/4 x 140 3/8
Weight..................................25,000 lbs. approximate
EQUIPMENT FEATURES
Hydraulic grinding wheel truing with hand diamond advance.
Hydraulic regulating wheel truing with hand diamond advance.
Servo transmission.
Attached electrical.
20” Thru feed.
Specifications are deemed accurate, however, subject to verification or prior sale.
All exchange units/returns must be shipped within 30 days. All exchange units/returns must be shipped using DDP terms - Grinders Clearing House, Inc. dba GCH Machinery, is not responsible for any customs formalities or shipping costs.
If Grinders Clearing House, Inc. dba GCH Machinery does not receive exchange/core unit back within30 days, GCH will invoice FULL replacement cost (OUTRIGHT Cost) to customer.