Hydraulic Shear Features(High Performance, High Value, Precise
Hydraulic Shears are designed and constructed to provide high-speed
shearing of blanks with clean, square edges, and to exacting
All Hydraulic Plate Shears feature the swing beam design ensuring
consistently accurate parts while providing smooth, quiet
operation. These cost efficient, quality shears are available in
capacities from 1/4" - 3/4" and 98" - 194" cutting length. Unitized
box construction provides for maximum rigidity and strength.
This simple design with swing beam upper blade, strong rigid
frames, and constant minimum rake angle assures that the sheared
blanks are precisely cut within a minimum of bow twist or camber.
Hydraulic Plate Shears are equipped with the productive features
and safety devices for optimum, accurate shearing performance found
on more expensive units. Feature for feature, Heller Hydraulic
Shears are a smart, economical choice for plate shearing.
Blade Gap Adjustment:
A conveniently located adjustment on the touch screen enables the
operator to accurately adjust the blade clearance on both sides of
the machine simultaneously.
Electronic Stroke Adjustment:
For faster stroke rates, the operator can quickly adjust the stroke
length to suit the job. Smaller blanks require less stroke length,
thus providing faster cycling of the beam.
Rear Guards and Work Piece Recovery:
The rear of the shear is protected by a full width gate. There is a
new work piece receiver with ball transfers installed that allows
easy retrieval of the sheared piece.
Swing Beam Design:
The beam holding the upper knife pivots on large spherical roller
bearings, while hydraulic cylinders mounted into the side frames
generate the cutting pressure. At the end of each cutting stroke,
the hydraulic pressure is released and return cylinders move the
beam to the top of stroke. The back gauge design and its
interconnection with the swing beam gives immediate clearance to
the sheared material, allowing it to drop away without jamming the
lower blade and back gauge. Less maintenance is required with the
swing beam design, since guides and slideways are eliminated.
Stressed-relieved, unitized box construction of the table and extra
thick, rolled steel frames provide maximum resistance to deflection
and torsional force. Increased throat depth in the side frames
allows for progressive slitting of strips longer than the blades.
Due to swing beam design, there is no deflection at the throat area
of the shear.
Minimum Rake Angle:
Due to strong, rigid construction, swing beam design, and powerful
hydraulics, Heller Hydraulic Shears feature a constant minimum rake
angle for consistent quality shearing, at full capacity, with the
least amount of distortion.
Pressure Sensing Hold Downs:
Hold downs are synchronized with the upper blade travel to provide
maximum hold down pressure at the moment of shearing, thus,
assuring cutting accuracy. As shearing forces on the plate
increase, the hold down pressure increases to provide optimum
gripping action. The hold down feet can hold two or more plates of
different thicknesses for simultaneous shearing on the same stroke.
At one end of the shear, two hold downs are mounted close together
for ease in cutting narrow strips.
All shears are equipped with a heavy-duty squaring arm which is
mounted at precisely 90 degrees to the shear blades. The squaring
arm has a recessed stainless steel rule in inch/metric. The shear
is also equipped with ball transfers to facilitate even the
Modern Block Hydraulics:
The hydraulic system is comprised of long life, heavy-duty
components mounted on a common block. Tubes and connections are
minimized, and access and serviceability are made easy. The
internal gear pump is quiet and extremely reliable, and is rated
for years of trouble-free service. The large capacity oil reservoir
eliminates the need for oil cooler. A factory preset relief valve
prevents overloading mechanical parts and the hydraulic circuit.
Hinged Inter-Locked Barrier Guards:
The Shear has a unique inter-locked barrier guard. This allows the
operator to safely pick up one side of the guard in order to work
short pieces. Lifting the guard disconnects power to the foot
pedal. The shear will not operate until the guard is lowered into
the down position.
For fast, visual positioning of sheets with scribed lines or punch
marks, an intense light is provided. The light source casts a
precise shadow line for accurate positioning and shearing.
The cylinders are mounted in cutouts within the extra thick side
frames for easy accessibility. Separate, nitrogen-filled, return
cylinders are mounted behind the hydraulic cylinders. The return
cylinders, independent from the hydraulic cylinders, automatically
retract the blade to the top of stroke position during power shut
down, emergency, ot after the cutting stroke is completed. They
also act as counterbalance to the shear.
Blade Clearance Adjustment:
The clearance between the blades determines the quality of the cut
edge and the thickness of metal that can be cut on a specific
shear. Excessive clearance can produce a deformed, burred edge,
while insufficient clearance usually results in a secondary shear
or broken edge. Proper blade clearance normally produces clean,
square edges on every part.
Shears up to 1/4" capacity are equipped with high carbon, high
chrome blades. All models, 3/8" capacity and above, are furnished
with "shock resistant" steel blades.