Page 8 - HUB-4 Magazine Issue 90

Cover story
McLanahan Designs
Bespoke Screen
Optimized for
Performance and
Maintenance for Sand
and Gravel Producer
In 2023, McLanahan replaced an aggregate
producer’s existing sizing screen with a bespoke
solution designed for better screening efficiency
and easier maintenance.
McLanahan supplied a 1.8 m x 4.8 m double-deck Inclined
Screen to fit into the customer’s existing space. The finishing
screen is designed to separate sand into plus 20 mm, 10 mm
and minus 10 mm sizes for stockpiling.
The Inclined Screen was originally meant to be a like-for-like
replacement of the existing screen; however, McLanahan
identified a few design improvements that could be made to
enhance overall screening performance as well as provide
greater access for maintenance activities.
Improved screening efficiency
One key area the McLanahan Inclined Screen design addressed
was screening efficiency. The stroke of the existing screen was
too large for the screen apertures. This resulted in the material
moving along the deck too quickly and fine particles taking
too long to fall through the openings. The producer had been
running the screen in reverse to keep the material on the deck
longer to address this issue.
McLanahan designed its replacement screen to operate at a
reduced stroke and increased speed. This means the particles
will hit the screen decks many more times before reaching the
discharge end, giving the particles more opportunities to pass
through the screen and providing better screening efficiency.
Ease of maintenance
Another design update McLanahan implemented with the
Inclined Screen simplified maintenance. McLanahan increased
the distance between the top and bottom decks by more than
150 mm to improve access to the bottom deck and inside of
the screen. A rubber curtain was added to the rear of the
screen to further improve access to the bottom deck for media
changeouts.
In addition to providing greater maintenance access,
McLanahan also enhanced components to allow for longer
wear life. For example, the McLanahan Inclined Screen was
fitted with shorter, softer springs to minimize side-to-side
movement and extend the life of the structure supporting the
screen. Furthermore, jacking points were added to all four
spring locations to allow for safer and easier spring changes.
McLanahan also outfitted the screen with bearings that boast
an operating life three times longer than industry standard.
Why McLanahan
With 190 years’ experience providing mining-duty
equipment for a wide range of applications, McLanahan is
well equipped to serve the unique needs of its customers
worldwide.
“McLanahan is able to make bespoke screens to fit
customers’ exact needs,” said Craig O’Hare, Territory Sales
Manager at McLanahan. “The screens aren’t just standard,
off-the-shelf units. We work with the customers to gain an
understanding of their exact needs and design a solution
that best meets their production and operational goals.”
Even after the equipment is up and running, McLanahan
ensures its equipment is supported by a team of after-sales
professionals and services, including equipment training,
plant audits, field service, OEM spare parts and more.
“We partner with our customers through the lifetime of
our equipment with service and support,” O’Hare said.
Celebrating 190 years in business in 2025, McLanahan
Corporation is an industry-leading manufacturer of
processing equipment for the aggregate, mining and dairy
industries. McLanahan offers process-engineered and field-
proven solutions that are tailored to the unique needs of
each site. For more information, visit mclanahan.com.
| p8 | www.hub-4.com Jan/Feb - Issue 90