HUFFORD A-12 MDL152

(1) USED HUFFORD A-12 STRETCH FORMING MACHINE
NEW 1958

SPECIFICATIONS
MAX TONNAGE CAPACITY 59 TONS
MAX PULL LENGTH @2000 PSI (PER CYL) 118,000 L
MIN TENSION (PER CYL) 11,800 L
MAX DISTANCE BETWEEN JAWS & COUPLINGS W/TENSION
CYLINDERS RETRACTED & IN OUTBOARD POSITIONS:
HD5 - 4" CIRCULAR OPENING 246"
HD8 - 6" CIRCULAR OPENING 238"
HP9 - 8" CIRCULAR OPENING 237"
20" SHEET JAWS 236"
MAXIMUM WIDTH OF SHEET THAT CAN BE FORMED WHEN
MACHINE EQUIP W/STRAIGHT SHEET JAWS 20"
MAXIMUM DIE LENGTH FOR 180 DEG BEND AT FULL
TONNAGE (PROPORTIONATELY LONGER DIES UP TO 208"
MAY BE USED AT LOWER TONNAGE) 72"
MAXIMUM DIE DEPTH W/DIE BACK-UP PLTS 28"
MINIMUM DIE DEPTH W/DIE BACK-UP PLTS 7"

DIE MOUNTING TABLE
TABLE DIMENSIONS, D x W 50" x 84"
TABLE CONTAINS 76 UNIFORMLY SPACED TAPPED HOLES
& COMPLEMENTARY KEYWAYS TO PERMIT THE MOUNTING
OF EITHER DIE HOLDING PIN ASSEMBLIES OR DIE
BACK-UP PLATES.

MACHINE MOVEMENTS
EACH ARM MOVEMENT IS INDEPENDENTLY ACTUATED BY
A SEPARATE HYDRAULIC CYLINDER & INDEPENDENTLY
CONTROLLED. EACH ARM ROTATES ABOUT A FIXED
PIVOT FROM 17 DEGREES FORWARD TO 90 DEGREES
BACK THROUGH A TOTAL ARC OF 107 DEGREES.
EACH TENSION CYLINDER IS ADJUSTABLE ALONG ITS
ARM IN 7" INCREMENTS AND IS POSITIONED BY MEANS
OF AN ELECTRIC MOTOR-SPEED REDUCER-LEAD SCREW
MECHANISM.
EACH TENSION CYLINDER IS FREE TO SWIVEL ITS
BRACKET ABOUT A VERTICAL AXIS 25 DEGREES EACH
SIDE TO THE ARM CENTERLINE

POWER UNIT
OIL RESERVOIR 180 GAL
ELECTRICAL MOTOR, HP/RPM 25/1200
FOR DRIVING (1) 2-STAGE HYDRAULIC PUMPS FOR THE
OPERATION OF THE ARM ACTUATING CYLINDER CIRCUIT
AND (1) 2-PRESSURE HYDRAULIC PUMPS FOR THE JAW
CIRCUIT.
ELECTRICAL MOTOR, HP/RPM 40/1200
FOR DRIVING (2) 2-STAGE HYDRAULIC PUMPS FOR THE
OPERATION OF THE ARM ACTUATING CYLINDER CIRCUIT

CONTROLS:
ALL FUNCTIONS OF THE PRESS ARE PUSH-BUTTON
CONTROLLED. (1) SOLENOID OPERATED SELECTOR
VALVE FOR EACH TENSION CYLINDER
(1) SOLENOID OPERATED SELECTOR VALVE FOR EACH
ACTUATING CYLINDER.
SEPARATE MANUAL ADJUSTMENTS ARE PROVIDED TO
REGULATE THE SPEED OF TRAVEL OF EACH ARM.
SOLENOID OPERATED SELECTOR VALVES PROVIDE FOR
OPENING AND CLOSING THE GRIPPER JAWS.
OPERATION OF THE INITIAL WRAP PRESSURE SETTING
AND FINAL STRETCH PRESSURE SETTING IS
CONTROLLED BY SEPARATE PUSH-BUTTON STATIONS.
DESIRED PRESSURE SETTINGS ARE ESTABLISHED BY
MEANS OF ADJUSTABLE HYDRAULIC RELIEF VALVES
MOUNTED ON THE PANEL.
A HYDRAULIC PRESSURE GAUGE LOCATED ON THE LEFT
HAND TENSION CYLINDER HEAD ACCURATELY INDICATES
THE PULLING PRESSURE AT ALL TIMES.

MACHINE SPEEDS
TENSION CYL EXTENDS (30" STROKE) 35 SEC
TENSION CYL RETRACTS (30" STROKE) 26 SEC
ARM MOVE BACK (107 DEGREES) 29 SEC
ARMS MOVE FORWARDS (107 DEGREES) 10 SEC

OVERALL DIMESIONS (STANDARD ARM)
WIDTH 388-1/2"
DEPTH (ARM FORWARD) 267-1/2"
HEIGHT 76"
WEIGHT, APPROX (W/ATTACHMENTS) 39,000 LBS

EQUIPPED WITH:
BULLDOZER ATTACHMENT
HUFFORD "CAM-O-MATIC" TRACER ATTACHMENT
ROUND TYPE GRIPPERS FOR EXTRUSIONS

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