What are the seven best features of a Cat® AP400 Wheel Asphalt Paver?

The Cat  AP400 Asphalt Paver is a wheel-type asphalt paver that provides easy transport, application versatility, and a wide paving range, making it the perfect match for urban streets, parking lots, rural roads, sub-divisions and many other small to intermediate-type applications.

This is the bottom part of a story that was produced by Caterpillar and originally published as an interview case study in Earthmoving Equipment Magazine. It has been republished (with permission from EEM).


The small footprint of the Cat AP400 Wheel Asphalt Paver simplifies manoeuvrability in tight spaces, while the lighter weight and optimal width accommodates easy transport.

The single sliding console, easy-viewing display, and unobstructed visibility to the hopper combine to simplify operation.

Configurable screed designs, high transport speeds, and serviceable components provide contractors with excellent flexibility.

Here are the seven best features of a Cat AP400 Asphalt Paver:

1. Size

  • The compact size and small footprint simplify manoeuvrability in tight spaces for efficient work in urban-type applications.
  • Tight 90-degree turning capability enables the paver to rotate and cover tracks on a return paving pass.
  • Standard paving range utilising the SE47 V screed is 2.4-4.7m with a maximum width of 6.1m. Standard paving range utilising the SE47 FM screed is 2.4- 4.7m with a maximum width of 5.9m.
  • The throughput capacity is 774 ton. Paving depths up to 300mm (12″) supports aggregate paving applications.

2. Transport

  • Machine weight of less than 13.6 mt (30,000 lb) paver and screed combination enables easy transport on a variety of trailer types.
  • Length of less than 5.5m and width of 2.6m accommodates machine transport without special permits.
  • The front-loading angle of 20 degrees and high front bumper clearance reduces the need for additional blocking when loading onto various trailer designs.
  • Front, middle, and rear tie-down locations make securing the paver efficient for quick travel to the next job site.

3. Mobility

  • Wheel undercarriage provides exceptional mobility and fast travel speeds for unmatched manoeuvrability around the job site.
  • Excellent traction is delivered through the 14.00×20 sand-rib or 15.5 R25 radial drive tires.
  • Front-wheel assist option provides power to the rear set of bogie wheels for excellent performance in tough conditions.
  • High, front ground clearance of 203 mm helps avoid storm drains, curbs, and other obstacles.

4. Material flow

  • Low truck entry height and short front apron enhances material flow while simplifying clean- out.
  • Feeder system design with 355mm diameter augers provides consistent material flow across the screed for efficient flow at both narrow and wide paving widths.
  • Narrow auger chamber keeps material moving and helps eliminate stagnate patches.
  • Ventilation system draws fumes from the auger chamber and redirects them away from the operator for a more comfortable working environment.
  • Single sliding console enables operation from either side of the machine.
  • Optional screed and paver mounted umbrellas offer protection from direct sun.
  • Heated seat option delivers comfort in cool weather conditions.

5. Viewing displays

  • High-definition, touchscreen displays with adjustable brightness control for all types of lighting conditions, including direct sunlight.
  • New touch screen operating display with simplified menu structures, intuitive graphics, and short-cut keys help simplify machine adjustments.
  • Single-touch functions from the main screen include screed heat, wash-down system, vibratory activation, ventilation system, and the accessory panel.
  • Wash-down system includes level indication.

6. Screeds

  • SE-Series screeds deliver excellent ride, density, and material texture while providing superior adjustment capabilities.
  • Screeds with front-mounted extenders and rear-mounted extenders are available.

7. Operating costs

  • Durable Cat C3.6 engine provides 90 kW (120 hp) of power and meets UN ECE R96 Stage IIIA emission standards, equivalent to U.S. EPA Tier 3 and EU Stage IIIA.
  • Exclusive Eco-mode and Automatic Engine Speed Control reduce fuel consumption and lowers sound levels for better job site communication.
  • Conveyor bed plates and chain guards are designed to minimise labour requirements and lower replacement costs.
  • Maintenance-free high torque motors for the auger and conveyor drive systems reduce service requirements.


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