Adjust paving width on the fly

Bergkamp’s unique Variable Width Spreader Box provides flexibility for microsurfacing contractors

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Bergkamp Inc., based in Salina, KS, offers its Variable Width Spreader Box (VSB) to provide better flexibility for microsurfacing contractors that work on highways, roads and other pavements where the width fluctuates throughout the job.

The VSB can expand and contract while paving, so you don’t have to stop when the road changes — eliminating unwanted construction joints and increasing pavement driving quality.

It has four augers: the first two feed the material to the center of the box while the other two evenly distribute the mix during placement. As the box adjusts, the augers remain equally spaced apart so you get an even placement and a smooth finish.

Even at the smallest width, the auger blades never touch, making it easy to clean because the microsurfacing material doesn’t build up between them.

The VSB is available in 8- to 13-foot, 9- to 14-foot and 10- to 15-foot models. Widths up to 16 feet are available by special order. Each model allows you to pave at any width between the minimum and maximum size.

As the first of its kind, the VSB is made for Bergkamp pavers, but can also be customized for other brands.

It easily replaces standard boxes, connecting to the frame of the microsurfacing paver like other spreader boxes. The VSB is connected to the paver’s hydraulic system and adjusts by using the levers located on the handrails of the box.

The hydraulically driven ribbon augers are fully expandable, and feature a 12-inch pitch. Both the primary and secondary strike-offs feature a patented design that allows them to slide within a guide tube when the box expands or contracts while paving, and inboard runners provide clean longitudinal joints.

Along with the VSB, Bergkamp offers other spreader boxes for all applications, including:

  • Hydraulic Spreader Box — Designed specifically for microsurfacing and quick-set slurry seal mixes. Once the pins are removed, widths can be hydraulically adjusted from 8 to 14 feet in 6-inch increments. Widths up to 16 feet are available by special order.
  • Slurry Seal Box — Available with or without augers for typical slurry seal applications. The width is manually adjustable from 9 to 14 feet in 6-inch increments. Widths up to 16 feet are available by special order.
  • Rut Box — Allows filling of wheel path ruts to the desired level without wasting material. Two independently adjustable V-shaped screeds channel the mix’s larger-sized aggregate to the deeper part of the rut. It is available in 5-foot or 6-foot widths.

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aluminum boxes and steel racks

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  • For work on granular, cohesive and mixed soils
  • 14.75-hp Hatz air-cooled diesel engine
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  • Gradeability of 35 percent
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Available for the PF6110 tracked and PF6160 and PF6170 wheeled asphalt pavers, the Omni 318 and Omni 1000 vibratory screeds enable multiple configurations on a single paver to accommodate various mix designs and paving requirements. The Omni 318 is suited for most paving jobs with a standard paving width of 10 to 18.25 ft. The heavier Omni 1000 is suited for more demanding applications. It is designed with rear-mounted hydraulic extensions and comes with standard power height, slope and crown adjustments. Standard paving width is 10 to 19.5 ft. Both models utilize innovative heat bar technology to provide uniform heat to the screed, and are available with optional extensions for paving widths up to 26 ft.

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Variable Width Spreader Box

  • Can expand and contract while paving to match roads that fluctuate in width
  • Hydraulic cylinders are actuated by valves located on the handrails of the box
  • Hydraulically driven ribbon augers are fully expandable, never touch, and feature a 12-inch pitch
  • Available in 8- to 13-ft., 9- to 14-ft., and 10- to 15-ft. models
  • Widths up to 16 ft. are available by special order

Bergkamp Inc