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New Greenerd Hydraulic Presses Offer Greater Work Access, More Rigidity and Versatility
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NASHUA, NH (February 25, 2003)– Today Greenerd has introduced their line
of Model GG Four-Column Hydraulic Presses that offer manufacturers setup flexibility
due to a large feed window, structural rigidity, slide accuracy and long die
life through an eight-point gib-guided design. Presses can be built to
specification from 30 tons to as high as 2,000 tons with a wide range of bed
sizes and up to 150 strokes per minute, depending on press capacity.
Greenerd’s eight-point gib-guided slide easily withstands the demands of high-speed
stamping with large dies and progressive dies requiring off-center loading. Gibs
are extra long and square at four tubular corners, which provide more accurate slide
guiding and offer front-to-rear and side-to-side adjustment to maintain slide parallelism
to the bed. For example, with gib-guided slides, parallelism is ± 0.002"
over the entire bed of the 48" x 36" model under full load.
In addition, press deflection is minimized due to Finite Element Analysis of
weldments and major structural components of the press. Also, the Gibs are
hardened steel and designed with maximum bearing contact for long life.
"We took a close look at user needs and decided that a press design
having a large, open feed window with more daylight, increased stroke and access
to the die and bed would provide greater versatility" said Greenerd President
Tim Dining. "When combining this with eight-point gibbing via all corners, customers
have a flexible, cost-effective solution in a rigid, compact machine."
Because the frame and slide design provides an exceptionally stable and
parallel platform for mounting large dies, Greenerd’s GG presses offer longer die
life. A large, T-slotted bed makes it easy to install quick-change die
equipment. Graphite-impregnated bronze bearing strips are longer for maximum
slide contact and excellent wear resistance. A split-collar ram connection assures
precise alignment after gib adjustment. Precise leveling is achieved with
an easily adjusted slide and bolster.
Although the presses are capable of heavy tonnage, the footprint is reduced as
much as possible to save valuable manufacturing space and the open window
design requires less customization for the users’ application, making them more
compact, versatile and affordable.
Greenerd Presses are available as standard machines or can be designed for
custom applications by expert engineers with extensive application experience. For more
information contact Mr. Tom Lavoie, Applications Engineering Manager at
Greenerd. Phone number 800-877-9110, x 251 or email
tlavoie@greenerd.com.
Founded in New England in 1883, Greenerd has designed and built thousands of
high quality custom and standard hydraulic presses since 1934. Machines include
a very extensive line of Hydraulic Presses in all sizes and configurations. A
complete line of Arbor Presses are also available. Greenerd Presses are made
to withstand the rigors of around-the-clock production and deliver many years
of service.
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