our Brochure or
a printed copy
Most Durable 410 Core Chuck is the highest capacity, most advanced
roller action torque activated core chuck made to serve the corrugating
industry. This new generation core chuck was designed to solve
the increasingly common problems of less rugged torque chucks.
After two years of prototype testing, production units with redesigned
patented features began service in 2003 and are now performing
flawlessly in several countries.
• Greater Expansion Range: 3.90 inch (99 mm)
to 4.25 inch (108
mm) (4 inch or 100 mm Core Capability)
• Longer Jaws to avoid core tear-out
• Heavy Duty Jaw Tabs
• High Speed E-stops without chuck damage
• Thicker Jaw Retainer Rim
• Greater structural load capacity for safety
• Fully Serviceable – No shrink fits or welds.
• 13200 lb max roll weight (6000 kg) 11000 inch-lb
max torque per chuck (1240 Nm)
• Made in the USA
• BEST WARRANTY AVAILABLE – 30 MONTHS
Dents on the old generation chuck parts result from the high torque
of web tension and/or e-stops, indicating poor mechanism load capacity.
The force of the rollers against the jaws and hex dent those expensive
parts. These dents then cripple the roller action, causing grip and/or
release problems. Similarly, the dents in jaw retainer ribs indicate
that the chuck fully expanded without achieving adequate grip, possibly
resulting in core tear-out. The rollers do not even touch the ribs
if the chuck grips correctly. The dented parts photographed were furnished
by an American corrugator. The chucks were taken from service due primarily
to frequent failure to release the core and were replaced plant-wide
by MD 410 chucks.
The principal failure mode causing the dents is ordinary metallic
yielding during a few intense loading events. Similarly, the principal
failure mode of jaw tab breaking is metallic brittle fracture. In
both cases, time dependent failure modes of wear and/or fatigue may
have contributed but a replacement chuck of inadequate capacity is
likely to have problems as soon as critical events are repeated.
Dents on Old Design Jaw
Dent on Old Design
Jaw Retainer Rib
Dent on Old Design Hex
Time for a New Chuck
The demands on industrial equipment can increase over time.
The demands on core chucks increase with heavier rolls, faster unwind
and more abrupt e-stops. It is thus not surprising that core chucks
designed 20 years ago have serious problems in modern corrugators.
The MD 410 was designed after hundreds of chuck performance and chuck
repair problems were analyzed. The compact structure affords space
for longer jaws to avoid core tear-out. Contact stress yielding, jaw
tab fracture and other failures are reliably avoided by high load capacity
of both the structure and the expansion mechanism. The dual core size
MD 410 is the long term solution to costly problems.
410 – Most
Durable 4 inch/100 mm core chuck
Patent Number: US 7,077,356 B2
our Brochure or request
a printed copy