Cat develops versatile pneumatic compactor


Caterpillar has announced the development of a pneumatic compactor with a two-wheel configuration and a choice of ballast setups.

The CW16 has been designed for use on granular materials and various types of asphalt-mix designs. It is available as a standard nine-wheel model with a 5ft 9in (1.75m) compaction width or as an optional 11-wheel model with a 6ft 9in (2.13m) compaction width.

Depending on ballast used (including water, sand, steel, or combinations), operating weight of the CW16 varies from an 11,464 lb (5,200kg) base configuration to an approximate maximum weight of 33,000 lb (15,000 kg) for the nine-wheel configuration and 32,850 lb (14,900kg) for the 11-wheel configuration.

Operating weight can be adjusted to suit job requirements. Per-wheel weight can be varied from 1,280 lb (580kg) to 3,680 lb (1,670kg) for the nine-wheel model, and from 1,060 lb (480kg) to 2,975 lb (1,350kg) for the 11-wheel model.

Two engines available
Two engines are available for the machine to meet regional emissions requirements. The Cat C3.4B Acert engine meets US EPA Tier 4 Final/EU Stage IV standards, and the Cat C4.4 meets the equivalent of US EPA Tier 3/EU Stage IIIA/China NR III standards. An eco-mode, in combination with an automatic speed-control system, is designed to save fuel, lower sound levels, and deliver smooth transitions for optimum mat quality. Both engines are rated at 101.9hp.  

The standard, 500-hour, engine-oil-service interval reduces both routine-maintenance time and overall operating costs. The CW16’s large-capacity hydraulic- and engine-cooling systems keep components at optimum temperatures, even in high ambient temperatures, extending service life for such critical components as hydraulic pumps and motors.

Oscillating front wheels assist in compacting soft voids across the entire machine width, and the 11-wheel configuration increases efficiency in chip-and-seal applications. A tire overlap of 1.25 in (32mm) ensures even compaction across the surface.  

Each wheel is equipped with self-adjusting scrapers, and a water-spray system deters material from adhering to the wheel surface. Standard cocoa mats help retain water to keep wheels wet, and heat-retention aprons are available.

June 22, 2018

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James joined the Industrial Vehicle Technology International team in 2017. Previously he was Assistant Editor on an engineering title for several years and has worked for various other trade magazines before that. James is happily married and has a young daughter and son who keep him busy.

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