New Carlson Paver Is Eaton Product Showcase

Carlson’s all-new CP-90 paver features a showcase of products from Eaton’s Hydraulics Business and the hydraulic circuitry savvy of Applied Industrial Technologies.

Background

When Carlson Paving Products, Inc. of Tacoma, Washington, decided to expand its line of asphalt paving equipment, the company naturally turned to Eaton and Applied Industrial Technologies, a nationwide Eaton products distributor, for help.

Carlson customers know that applying asphalt evenly on a busy roadway requires top performing equipment that can get the job done
on time and on budget. This is the reason why they have depended on Carlson’s high-performing screeds and screed attachments for over 20 years—and the reason they asked Carlson to come up with a medium-sized asphalt paver that would outpace the competition.

Owned by Astec Industries, Carlson responded with its all-new, commercial-class CP-90 paver. The track-driven machine features a showcase of products from Eaton’s Hydraulics Business and the hydraulic circuitry savvy of the Applied® operation in Tacoma, Washington. Onboard are:

• Eaton® 350 Series medium-duty, closed-circuit piston pumps and 72450 Series medium-duty piston motors—Power track-drive system
• Eaton 420 Series open-circuit piston pumps and custom Vickers® valve manifold system—Control auger, conveyor circuit, and track tension functions
• Char-Lynn® 2000 and 4000 Series motors—Power auger and conveyor functions
• Vickers® DG4V3-60 Series solenoid-operated directional valves as a custom valve assembly—Control auxiliary functions
• Eaton 74348 medium-duty piston motors—Control generator circuitry
• Vickers filters—Clean return oil in entire hydraulic system

Challenges

Applied has been Carlson’s goto source for Eaton products for some 10 years. With the CP-90 paver on the drawing board, Carlson called on Mike Yost, Applied fluid power specialist, for assistance in designing the machine’s hydraulic circuitry.

“The CP-90’s overall compact design required a tightly packaged hydraulic system,” Yost says.

“Therefore, space limitation was a design challenge. We needed to propose a package with system components that would fit into the confined area and be accessible for service, too.”

Solution

Yost contacted Jack Heeter, Eaton area sales manager, and other Eaton personnel for product recommendations that would meet the CP-90’s design parameters. Eaton’s 350 Series mobile
pump was at the top of the recommendation list, Yost says.

“The 350 Series pump is a natural for the application. It offers the power of two pumps in a single body package, and the 49-cc displacement size produces the hydraulic power
required.

“We were able to provide an orderly circuit setup by placing all hydraulic connections on a custom MCD valve manifold assembly, which was also highly beneficial in the overall system design.”

Results

With the customer’s stamp of approval, the Eaton-powered hydraulic system was built into the first Carlson CP-90 paver that received overwhelming response during its debut at the 2008 CONEXPO-CON/AGG Exposition. The CP-90 is now in full production.