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Hydraulic / Mechanical Comparison
Why Hydraulic presses? |
While there are certain operations that are better performed on mechanical presses, advances
in hydraulic press technology now make hydraulic presses the presses of choice for most
applications. Here's why:
Features and Benefits over Mechanical Presses:
- Full power stroke
- Full tonnage is delivered over the entire length of stroke. There is no "tonnage curve"
to worry about.
- Built-In overload protection
- A hydraulic press will never exceed the set tonnage; it will never break its frame.
- Adjustable tonnage
- Tonnage can be adjusted from 100% to 20%, allowing you to use only the tonnage you need for
each job.
- Wide Range of hydraulic systems available
- High, medium, and low speeds can be provided to match your needs and cost constraints.
- Easily adjustable stroke length
- Use only the stroke length you need for each job. Adjustments are quick (less than 5
seconds)
- Reverse on distance or pressure
- Provides flexibility to select the best method for each job. A hydraulic press can never
get stuck at bottom dead center.
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Selecting the Right Hydraulic Press:
- Tonnage. Tonnage is the most influential factor in selecting a press. Hydraulic
presses are better suited to a broad range of jobs due to their ability to operate at reduced
tonnage. You use only the tonnage required for a particular job. The more critical the work
and the more demanding the tolerances, the greater the reserve capacity should be.
- Type of press. The type of press is dependant on many operational considerations.
Open-gap presses provide easy access from three sides. 4-Post presses insure even force
distribution. Straight-side presses offer the rigidity required for off-center loading in
progressive die applications.
- Press speed. Press speed is typically expressed in strokes per minute. Press speed
is based on a variety of factors; press size, stroke distance, load/unload time, etc. Larger
hydraulic systems and shorter strokes can increase strokes per minute.
- Accessories. Accessories allow you to customize a press for your specific
application. Options such as dwell timers, die cushions, eject and knockout cylinders, light
curtains, touch screens and rotary index tables can greatly enhance press throughput. Let our
Applications Engineers help you determine your exact hydraulic press needs.
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