Rock Products

APR 2019

Rock Products is the aggregates industry's leading source for market analysis and technology solutions, delivering critical content focusing on aggregates-processing equipment; operational efficiencies; management best practices; comprehensive market

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38 • ROCK products • April 2019 EQUIPMENT & TECHNOLOGY LOADING & HAULING Cooper Tire has announced the addi - tion of the Roadmaster RM351 HD tire to its commercial tire lineup. Engi- neered for mixed-service applications such as construction, logging and mining operations, the tire is designed for both on- and off-road driving, and comes in two sizes: 11R22.5 and 11R24.5, in load range H. The Roadmaster RM351 HD is a full inch wider than its predecessor, the RM300 HH, with a 20 percent larger footprint. Coupled with its deep 32/32nds tread depth, it provides up to 25 percent more miles to removal – depending upon the application. "That's a big step forward in tire perfor- mance for our Roadmaster customers," said Gary Schroeder, executive direc- tor of Cooper's Global Truck and Bus Tire Business. "By going wider, we spread the weight over the tire to gain better mileage, while also improving traction. It's a win-win." To help ensure long tire life, tie bars between the outside lug and the shoul- der, along with shoulder grooves that are linked and interlocked, help ward off tire squirm and irregular wear. The sidewall is extra thick with a curb bar protector to help protect the casing from cuts and scrubbing. For traction and long-life performance, the tire features five lugs that have an open pattern to minimize stone holding while enhancing traction. Stone ejector ledges, coupled with angled grooves, also help prevent stone drilling. "That's a key feature of the tire as it will be used off-road where sharp stones can be a tire's worst enemy if they're allowed to drill into the casing. The way we designed this tire helps preserve the casing for multiple retreads," Schroeder added. The Roadmaster RM351 HD's casing itself is extremely robust, with four- belt steel design construction. Cooper provides a six-year, two retread war- ranty on the RM351 HD. "The casing we've developed for this tire, along with the warranty, provide life and cost effi- ciency beyond the original tread," said Schroeder. Cooper Tire, BKT Showcases EARTHMAX SR 46 at bauma BKT showcased its EARTHMAX SR 46 tire at bauma. The tire is "an innovative solution for rigid dumpers operating under adverse conditions in rocky environments such as mines, dams and the construction sites of large building structures," the company said. Previously available in the 49-in. version, a new pattern was officially showcased at bauma in the largest size ever built by BKT, namely 33.00R51. EARTHMAX SR 46 features a diameter of 375 centimeters (147.6 in). It is 975 centimeters (383.8 in.) wide and weighs not less than 2,400 kg. (5,291 lb.) This tire is particularly suitable for transporting heavy loads. It is the best choice in terms of cut-and-chip resistance – a quality that turns into an extended product lifecycle. Impacts, mechanical stress, and punctures are reduced to a minimum thanks to the steel-belted casing, which perfectly optimizes operating hours and maximizes productivity. Another distinguishing mark of EARTHMAX SR 46 is the special tread design showing a block lug pattern with cir- cumferential grooves resulting in reduced wear of its external part plus excellent cornering performance, the company said. BKT, Cooper Tire Launches New Roadmaster RM351

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