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5 SPRING LOADED DEVICES
www.jergensinc.com
5.2 Jergens, Inc. • Jergens Way • 15700 S. Waterloo Road • Cleveland, Ohio 44110-3898 USA
Spring Plungers
Spring Plunger tips are manufactured using
case hardened steel. This means they have
a protective shell, about .10" deep.
Jergens Spring and Ball Plungers have accurate
end forces, are easy to install, and are
competitively priced. They are manufactured
in the U.S.A. in a ISO 9001 certified quality
system.
And if these aren’t enough reasons to specify
Jergens Spring and Ball Plungers, here are a
few more:
Better Point of Contact
The Jergens plungers are turned and the
tips generated in one smooth continuing
process. This results in a constant radius
tip, perfectly tangent to the point where
the tip joins the shaft. Conventional two
step, turn and grind operations, can leave
ridges on the shaft at the tip junction and
can also produce out-of-round tips. These,
in turn, can gouge or score finely finished
parts or can cause detent cams to hang
up or stick.
Extra Length Springs
for Longer Life
The longer the spring, the longer its life.
Jergens goes to extra lengths to minimize
the thickness of the base flanges on all of its
plungers. That allows us to use longer springs
with less chance for fatigue and breakage.
Improved Plunger to
Body Alignment
The long base flange allows for a larger
bearing surface. This means improved
plunger-to-body alignment, truer travel, and
much improved side load characteristics.
Tighter Fit Resists
Contamination
Closer machining tolerances, minimum
plunger-to-body clearance, and smoother
plunger finish make Jergens plungers
fit more snugly in the plunger bore. This
improves plunger alignment and provides
extra resistance to contaminant entry. The
results: dirt and grit cannot get to the bearing
surfaces to shorten the life of the plunger.
Better Plunger Adjustment
The Solid Drive® design assures that during
removal or adjustment of the plunger,
the whole plunger is moving, not just the
set screw. This means no lost parts or
springs falling out of the plunger.
Jergens Spring & Ball Plungers Last Longer
Ball Plungers
Positive Control of
Spring Pressure
Accurate spring alignment is maintained
by using a stainless rivet with a long shank
on larger sizes of Jergens Ball Plungers.
This precisely positions the spring for more
accurate ball travel and provides positive
control of spring pressure. Conventional
floating discs are easily misaligned, while
the rotation of the inner ball on dual-ball
plungers results in less wearability on both
the spring and the ball.
Longer Spring Life
By minimizing the lining
pin head thickness,
Jergens is able to use the longest
possible springs. This, of course, means
less fatigue and longer spring life.
Uniform Ball Projection
The distance by which the ball projects
from the body of the plunger must be uniform
from plunger to plunger. This uniformity
is maintained by precisely controlling
the crimping pressure applied to the neck
of the plunger. Accurate machine controls
plus rigid inspection procedures keep variances
in ball projection to within ±.005".
...And Here's Why!
