Page 1
COOPER SALES ENG. CO.
Manufacturers
128 BURNET AYE.
PHONE 3-6231 SYRACUSE 3, NL to
’ Representative;
GRINDER
Model
A C
X
LEMPCO
BEDFORD,
PRODUCTS,
OHIO
.
Inc.
U. S. A.
Page 2
A FEW OF THE MANY ADVANTAGES OBTAINED BY THE USE
OF THIS MACHINE . . .
1 Interchangeable Grinds and Turns.
2 External Grinds and Turns.
3
Internal Grinds and Turns.
4 External Taper Grinds and Turns.
5 Internal Taper Grinds and Turns.
6 Face Grinds and Turns.
7 Automatic Power Cross Feed.
8 Wide Range of Adaptability.
9 A single set-up will allow for two or more
operations,guaranteeing greater accuracy
of the piece being machined.
10 Ten gallon capacity coolant tank is locat
ed in grinder base, but is readily acces
sible by removal of just one cover, so that
it may be cleaned quickly and easily.
Self-contained direct motor drive to cool
ant pump assures adequate supply of
coolant at all times. Coolant flow is ad
justed by valve at nozzle.
ADJUSTABLE
4 screws, the work head may be set in any one of
three positions best suited for the piece to be
machined.
EXCLUSIVE AUTO-SIZER
Lempco's patented Auto-Sizer is ideal, as it enables the operator to
keep on grinding without losing size. The sizing is accomplished by
means of an Arm and Dial Indicator set directly on the work diameter.
The first piece is ground to exact size and the indicator set to zero.
Thereafter, when the wheel needs re-dressing, the indicator is re-set back
to zero which compensates for the abrasive removed. Successive grinds
will produce pieces to size.
WORK HEAD
By
removing
• For production runs,
LONGITUDINAL FEED is manually operated by
means of a rapid interchangeable rack and pinion and
a screw.
can be accomplished in about 30 seconds.
LEMPCO PRODUCTS,
BEDFORD, OHIO
MEMBERS
NATIONAL
MACHINE
TOOL BUILDERS
Change from rack and pinion to screw feed
■
Inc.
U. S. A.
ASSOCIATION
Page 3
2 to 1 RATIO MAKES RACK AND PINION
Fast and Easy!
FEED
Micrometer adjustment makes
rack and pinion manual
accurate and fast. Mechanical
stops are provided to limit
longitudinal travel.
Ring die jobs may be inter
Feed
nally ground fast and accura
tely. Face plate set up for in
ternal ring jobs is shown on
photo to left.
BUILT-IN TOOL BAR FOR ROUGH TURNING FACE - INTERNAL
EXTERNAL • TAPER JOBS . .
On many jobs, rough turns and finish grinds may be made
without changing the set up.
justed to any desired angle for facing, boring, or outside
rough cuts.
may be made without necessity of removing tool bar.
It is likewise retractible so that finish grinds
The tool bar may be ad
CHANGE OVER FROM TURN TO GRIND
IN 30 SECONDS
Above shows Heavy Cut being taken with Too! Bar on
a Face Job
FAST DRAW-BAR MOUNTING FOR
SMALL JAW OR MAGNETIC CHUCKS
Chucks are mounted and demounted on the face plate very rapidly by
means of a single draw
of construction permits rapid interchangeability of any type fixture for
holding different kinds of
directly to the face plate.
bar
through
work,
the
hollow work spindle. Simplicity
LARGE CHUCKS may be fastened
INTERNAL and EXTERNAL TAPER GRINDS
Photo to left shows external ta- Photo to right shows the Lempco
per being ground fast and ac- Model ACX grinding internal
curately. External tapers may taper. Internal tapers may be
be ground through 90° on each ground through 90° on either
side
of center. Same
be rough turned.
FULL 3 6 0 ° CALIBRATED COMPOUND
tapers
may side of center. Same
be rough^turned.
Photo above shows Hardened
Surface Ground on Permanent Magnet Chuck
tapers
may
Steel
Spacers being
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SPECIFICATIONS
LEMPCO MODEL ACX GRINDER
Length, over-all.
Width
Height
------------------------- . ----------
Work Spindle Speeds
Work Head Adjustment
Carriage Feed
Swing
___________________________
Turning Range:
Maximum inside diameter
Maximum outside diameter.
---------------
____ ____
............
__
80-1 30 RPM
51 "
34"
62"
.02 0"
30"
CONSTiUSTSON FEATURES
WORK SPINDLE-
work end, bored and ground with Lempco No. 6 taper
for centers or arbors.
MAIN BEARINGS—Heavy Bronze, 2%' x 2%'
front, 2Va"
dle and thrust taken by ball bearings provided with
take-up adjustment.
SPINDLE LURBICATION—Adjustable sight
WORK HEAD-
positioned 6" away from grinding spindle, affording
extra clearance when required.
WORK
from motor to gear box; thence through silent chain to
spindle.
SPINDLE SPEEDS—Two, quick-change, no belts
to shift, or gears to pick off.
x
2%' rear, with take-up adjustment. Spin
feed Oilers.
SPINDLE DRIVE-Reversible V-belt
—Hardened S-l/^' diamefer at
—
is mounted on slide so it may be
Grinding Range:
Face Grinding
Internal Grinding, Diameters up to
Internal Grinding, Length
6"
specified. Reversible 2-way switch is conveniently
operator.
External Grinding
Face Plate Diameter
Carriage Travel
Cross-Slide Travel
Grinder Spindle Speeds__6,000 and 1 2,000 RPM
Shipping Weight
AUTOMATIC CROSS-SLIDE-Hand-scraped
dove-tailed ways, with fitted steel, tapered, adjustable
gib. Automatic power feed, both directions, .020
per work revolution.
COMPOUND
ble gib. Feed screw with micrometerdial calibrated to .001
GRINDING SPINDLE-1 % x 18 quill. Four
preloaded precision type ball bearings, matched pairs.
Two-step V belt pulleys.
TOOL HOLDER BAR-1% x 14 .
Tool holder 3
COOLANT SYSTEM
pump mounted in tank of ten gallon capacity. Entire
unit removal for quick cleaning.
WORK HEAD MOTOR—Repulsion-induction,
220-440, 50 or 60 cycle, three phase unless otherwise
mounted on main housing, within arm's reach of
__________________
--------------
____________
_______________
approximately--
FEED—Dovetailed ways, adjusta
/s" x 3
/e".
—
Self-contained coolant
___ 1 8"
1
65 0
1 8"
1 8"
16"
lbs.
8"
8"
9"
v
".
COMPOUND
in position by bolts in quadrant slots, calibrated and
adjustable through 180°.
—
Hand-scraped to platen and locked
iUII
BEDFORD, OHIO
Copyright 1945 Lempco Products, Inc.
GRINDER
6 pole dynamically balanced,
able bracket for belt take-up.
*
MOTOR—2 H. P. series wound,
cd
U. S. A.
Mounted on adjust-
Printed in U. S. A.
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