Maintenance Manager, Performance Sheets Co.
City of Industry, California
Subject: MD 410 Core Chucks from Advanced Mech. Devices, LLC (core-chuck.com)
Experience: I have maintained equipment in corrugating
plants for over thirty years, mostly for Smurfit Stone in Fresno, California.
Problems: When Smurfit Stone began testing better chucks, we
were using 4 inch Double E torque activated chucks and Serco rollstand
activated chucks. The Double E chucks needed frequent repairs and their
performance was unreliable. They often failed to grip, causing core
burn-outs with downtime and they often locked up in spent cores or butt
rolls. The Serco chucks also required repairs and they tore out cores.
The operators preferred Serco which had fewer release problems so we
decided to replace the Double E chucks with Serco.
Upgrade: In early
2001, I was contacted by Harry Hope, a core chuck expert who sold
me a pair of prototype second generation roller action torque chucks.
He asked me to take one apart to see the design improvements. I was
very impressed with how rugged the new chucks were. They are modern
devices with good old fashioned brick outhouse durability. The very
rugged design prevents mechanism damage and thus solves the grip
and release problems we experienced with the first generation chucks
(Double E). The prototype chucks worked great, so we decided to replace
all our Double E and Serco chucks with the new design. In 2003, the
first production chucks (MD 410), refined with patented features,
were available. We bought a pair from the first run and more later.
About 4 1/2 years after service of the prototypes began, Mr. Hope
advised me to disassemble one for inspection. I saw desirable "break-in" from
the roller action which burnishes the expansion profiles smooth, but
I saw no damaging wear or deformation. The bottom line is that all
of the new generation chucks performed reliably and none of the chucks
needed repairs, not even the prototypes which ran on our double backer
for well over five years when the corrugator was decommissioned. I
suspect that the chucks are still serving Smurfit Stone but I do not
Value: I suggest that you look up the website of Advanced Mechanical
Devices, LLC (core-chuck.com) to learn about the MD 410. The thicker
rollers prevent denting and the longer jaws prevent core burn-out.
The longer jaws do not add length to the chuck so rollstand width problems
are avoided. Unlike the first generation chuck which has separate designs
for 4 inch and 100 mm cores, the MD 410 combines the expansion ranges
of the two old design chucks. The chuck cost was easy to justify due
to the cost of downtime we saved. The rollstand operators of course
appreciated the solution to chuck problems and our mechanics had better
things to do than fix chucks. The long service life is demonstrated
by a 30 month warranty. I recommend the USA made MD 410 chuck from
Advanced Mechanical Devices, LLC to any plant having chuck repair and/or
chuck performance problems.
contact Advanced Mechanical Devices, LLC with product and application
questions, including requests for nonstandard chucks and/or
chucks of other diameters.
Click here to request a brochure.
Mechanical Devices, LLC
57 Gear Road, PO Box 7308
Gonic, NH 03839