The BW 28 RH pneumatic-tired roller features a 106-cubic-foot ballast compartment and weight-ballast changing system to increase wheel loads and improve compaction performance. The roller offers a broad range of operating weights, from 18,960 to 61,730 pounds, and maximum wheel loads to 7,715 pounds for deeper static compaction. The new flexible ballast system features the option of adding concrete, steel, and/or underfloor weights plus water, dry sand, or wet sand to adapt machine weight to the application.
With the ballast system, contractors can install four 1,653-pound concrete weights, four 3,307-pound steel weights, or two 1,543-pound underfloor weights in a matter of minutes, says BOMAG. The 106-cubic-foot ballast compartment accommodates up to 6,614 pounds of water, 9,920 pounds of dry sand, or 13,228 pounds of wet sand to increase machine weight and wheel load.
With a compaction width of 80.4 inches, the roller’s offsetting tires overlap by 1.3 inches. The BW 28 RH roller’s front axle uses a three-way pivot to ensure even weight distribution across all tires, and the wheels’ kneading and flexing action seals the asphalt surface for optimum quality. The machine’s asphalt temperature sensor indicates to operators that they are compacting the mat within an optimum temperature range. The optional tire-inflation system varies tire pressure from 29 to 116 psi, giving operators an efficient way to ensure the correct contact pressure. The roller’s new front-end design, says the company, significantly improves visibility to the outside tires and to the tops of the tires, allowing the operator to compact next to obstructions and detect debris pick-up.
To reduce material pick-up and improve surface quality, says BOMAG, the BW 28 RH roller features a pressurized water system with one fully adjustable spray nozzle per tire to ensure full-width coverage of each tire. Available scraper coco mats are spring-loaded and tilt to help with uniform water distribution on each tire, and optional heat-retention shields allow the tires to quickly heat up and maintain high-heat uniformity during operation
The roller is powered by a 134-horsepower Deutz diesel engine that meets Tier 4-Final emissions standards and features an ECOMODE load-dependent operation system that automatically matches engine output to the application, providing fuel savings of up to 30 percent, compared with previous models.
The machine’s one-piece, tilt-up hood offers unhindered access to all engine service points from ground level, says the company, reducing maintenance time. Large steps leading up to the platform allow the operator to quickly and safely enter the workstation, says BOMAG, and the adjustable seat is fully rotatable along with the steering wheel and slides the full length of the platform. A new rocker brake pedal spans the full length of the platform to give operators access to braking function at all times.