Hans-Joachim Pahnke Book

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The first two-column press with under floor drive was
quickly accepted by the industry because of its benefits
of improved operation at higher reciprocating
speeds of up to 70 impacts per minute, and the improved
accessibility to the working area was also impressive.
It therefore did not take long for this type of construction
to also be used by Davy in England and Loewy in
the USA. Those were also with round columns. However,
the round column design turned out to be not the
best in terms of guiding quality and wear, and the
frame connection was not as reliable as planned.
Under floor presses around 1960 by
Walter Sommers (left) and Eumuco (right)
Hans-Joachim Pahnke therefore improved the frame
construction. At SACK GmbH, a return to the fourcolumn
construction type was made, but this time
with a square cross-section of the columns, so that
adjustable flat guides could be implemented on mounted
wear strips. The frame was formed from two
chain-link shaped cast steel elements – similar to a rolling
mill frame. Both frame elements were held together
by tensioning rings, which were shrunk fit onto
cast-on pegs at the top and bottom. This construction
resulted in a four-column frame with the stability of a
single piece frame. The under floor construction was
retained here, as with the first two-column presses.
6.3 MN “Mannheim“
under floor press (1961)