Porta
Press Q&A |
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| Here are the answers to some common questions about the Porta
Press: |
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| 1. What is the C-frame clearance top to bottom at rear
of opening? |
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The opening at the back of the C-frame is 6”. |
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If you notch the top of the die set you can add another
1/2" depending how deep you want to go. |
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2. What is the width of the press internal and external
to the C-frames? |
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The standard press width is 6.5" inside of the C-frame
and 10.5" to the outside. |
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We can change the inside width as long as this does not
compromise the tonnage requirements. |
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Add 4" to the internal width to get the O.D. of the
assembly. |
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| 3. Number of days to delivery. |
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Usually 14 days for a C-frame and ram assembly. |
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Tooling to go in the Porta Press is quoted per job. |
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We usually have stock of small shears and notching tools. |
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| 4. What is the total weight of assembled unit? |
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Approx. 150 – 175 lb – not including the bench. |
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The bench weights approx. 75 lb. |
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| 5. How is the Porta Press secured to the bench? |
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The assembly will come with bolt holes drilled and tapped
into the 1/4" top plate on the bench and fixtures for
securing the Porta Press C-frame to it ready for use. |
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| 6. What does the PTI bench look like? What are the dimensions? |
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The Porta Press bench is typically 34" high and 18"
square on top with a flat top surface. The working height
for the operator of the Porta Press will be approx. 38". |
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| 7. What does double/single acting mean? |
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Single acting only pushes down, with little power on the
return stoke. |
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Double acting has the same power curve on the return stroke
as on the power stroke. |
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The double acting cylinders have a spigot and are designed
to pull open a die set; this will replace the OBI mechanical
type of press. |
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Please note that the main power tonnage is only on the power
stroke segment. |
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The remainder of the stroke has only 20% of the rated tonnage. |
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| 8. Why is there a hole in the base? |
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The hole in the base is simply for slug exit. |
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A solid plate, called a quick change die block, is put on
top that is usually 1 1/4" thick (6.5"W x 6"L) and provides a flat surface for the die set to sit on. |
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The quick change die block is held in place with a rear
stopper and set screws through the side C-frame in the middle
of the front legs. |
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| 9.
How do you attach a die set to the base of the Porta Press
frame? |
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The design is for a quick change die block format. |
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The bottom 1 1/4" plate is precision machined to slide
in and out of the center of the press so that no alignment
is required with the die set. |
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The intent is to attach the die set to the quick change
die block the first time and thereafter no alignment is required. |
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To complete the attachment, the toolmaker must perform
the initial alignment and then tap and drill holes through
the bottom of the die set into the quick change die block.
Then the entire assembly can be withdrawn from the press by
releasing the side set screws, pulling the assembly out the
front and returning into place with no further alignment required. |
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| 10. How do you adjust the stroke of the cylinder? |
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The cylinder stroke is fixed and cannot be changed. |
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To adjust the working range the cylinder is threaded into
the upper base. Simply use a quick disconnect air hose to
the top of the cylinder to disconnect and spin the cylinder
up or down to the desired height. |
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5" of travel are available. A locking collar is provided
to hold the cylinder firmly in the proper position. |
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