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Screeds(Non Current)

Caterpillar offers a broad range of Cat® asphalt pavers that compete in the rubber tire, steel track and rubber belted markets. High horsepower and excellent mobility help operators place the mat where they want it. All models are equipped with independent feeder systems designed to reduce segregation and handwork. The ventilation system draws fumes away from the conveyor tunnel as well as the auger chamber and redirects them away from the operator for a more comfortable working environment. Electronic self-diagnostics on the propel and feeder systems maximize maintenance efficiency and reduce machine downtime. Cat screeds feature hydraulic variable-width adjustment and electrically heated screed plates. They are available in rear-extender and front-extender models.

AS4251 Asphalt Screed

AS4251 Asphalt Screed. Ease of operation, high-efficiency screed plate heating systems, low-maintenance screed plates and superior serviceability are combined to provide a superior screed.

  • Specification Summary

  • Heating systemLPG & Electroc
  • Extension packages0.25/0.71 m
  • Maximum Paving Width7.84 m
  • Standard Paving Width2.55 m
  • Minimum Paving Width2.55 m

Product Details

Operating Specifications

Maximum Paving Width 7.84 m
Minimum Paving Width 2.55 m
Standard Paving Width 2.55 m


Extension packages 0.25/0.71 m
Heating system LPG & Electroc


The AS4251 features a double width hydraulic power extension. Standard paving range from 2550 mm to 5000 mm provides maximum flexibility and great performances on job sites.

Screed Plates

The screed plates incorporate a threaded bolt design that provide quick adjustment.

End Gates

The fixed (standard version) or hinge-mounted (optional) end gates create a downward force to help contain the asphalt and follow the profile of the surface being paved.

Patent Pending 3rd Joint Design

The 3rd joint design for double extending feature promotes stability and mat quality.

Extensions Configuration

Each mechanical extension is equipped with a tamper blade and a vibrator box, with the exception of the 250 mm extensions, providing torsional resistance, rigidity and fast paving width adjustment.

Screed Plate Heating Systems

The AS4251 offers an LPG screed plate heating system or an electric screed plate heating system. Both systems are highly efficient and provide fast warm-up. The LPG heating system features eight high-energy burners and optimum thermostatic temperature control. The electric heating system features a tractor-mounted generator, replaceable heating elements and operator friendly controls.

Generator System (Tractor Option)

The generator system supplies power to the optional electric screed heat providing high reliability.

Auxiliary Rear Control Panel (Tractor Option)

The right-hand auxiliary rear control panel provides full control for tamper and vibrators frequencies, screed assist & counterbalance adjustment and augers group raising/lowering.

Screed Control Panels

The modular patented main screed control panels are mounted on each side of the screed. The left and right control panels include extensions in-out, paving thickness control, augers & conveyor switches, adjusting working range potentiometer and emergency & horn buttons. The LPG screed heat control panel includes electronic ignition for smoothing plates and automatic temperature control. The electric screed heat control panel (tractor option) includes on/off heat control switch, three pre-set temperature settings for each screed section, fault indicators and manual overrides for each screed plate section.

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