Sheffer CUSTOM MANUFACTURED User Manual
Page 4
Rock crushing press cylinder.
This cylinder used in geologic
engineering is capable of exerting
3,000,000 pounds of pressure.
Outfitted with a positioning device
for stroke control, it has a 28" bore,
4" stroke, 47" x 56" x 14" platen
face plate and 5000 PSI operating
pressure. The customer’s engineer-
ing department worked closely
with our personnel to achieve
the desired force and size
requirements.
Tunnel boring grip and propel
cylinders. Sheffer went underground
in the development of cylinders for
this boring machine that utilizes 12"
and 15" high pressure cylinders
(5000 PSI) to grip and propel the
unit. Sheffer’s experience was critical
to manufacturing the cylinders using
chrome plated high-strength materi-
als and special welding procedures
for a long service life.
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Four stage telescopic cylinder.
This 34
1
/
2
' cylinder, designed for
use in the pulp and paper industry,
incorporates special application
and safety factors. It is a four stage,
single acting telescopic cylinder
utilizing a 414" stroke to lift
platform and semi-truck trailers
to empty wood chips. Special
machining requirements included
deep hole boring and honing.
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