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  • AGG1 2015 Preview

    The Aggregates Industry's Big Show of the Year Puts the 'More' in Baltimore. By Mark S. Kuhar   Read More
  • Boosting Throughput

    An Ontario Quarry Increases Production Capacity And Plant Uptime With Anti-Pegging Screen Media Solutions. By Carol Wasson Read More
  • A Need to Feed

    Edwards Sand And Gravel Relies On Vibratory Feeders To Keep Material Moving At Its Pennsylvania Quarry. By Mark S. Kuhar Read More
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Rock from the Road: Blog and Travelogue

article thumbnailFebruary 24, 2015 – Aggregates industry professionals who want to see the latest product innovations – and discover the latest industry best practices – are headed to the 2015 AGG1 exhibition in Baltimore, March 17-19. Show organizers tell me that:

Prime-Time Products

article thumbnailVolvo Construction Equipment is showing a number of products at booth 1814. The Volvo L250H wheel loader is designed for two-pass loading of finished aggregate product into tri-axle on-highway trucks for up to 30 percent more truckloads per day compared to competitive loaders, which require three passes. With the excellent visibility and ergonomic design of the Volvo Care Cab, you can be sure your...

Rock Stars

article thumbnailFormer U.S. Transportation Secretary Ray LaHood, appearing on 60 MINUTES, said that many of the roads and bridges we drive on every day are “on life support.”
More inRock Stars  

Manufacturers in Focus

article thumbnailStockpile Reports, an online service that delivers accurate stockpile volume, tonnage and pile locations using an Apple iPhone device, Aerial, Walking Wheel, GPS or Laser data was awarded a contract for stockpile measurements from the TxDOT beginning in 2015.

People on the Move

article thumbnailBridgestone Commercial, a division of Bridgestone Americas Tire Operations (BATO), announced the appointment of a new president in the commercial tire division. As president, Commercial OTR, Taylor Cole will be responsible for leading Bridgestone’s North American commercial and strategic direction. Cole will be instrumental in harnessing resources for continued growth of the division,...

Latest Digital Issue

The national estimated average price-per-gallon for off-highway diesel fuel as of Feb. 10 is $2.571. That is lower than the previous comparison price-per-gallon of $2.589.

Rokla GmbH Offers Blasting Alternative


German manufacturer Rokla GmbH has begun production of the latest generation of Webster Hydraulic Cutting Units under the brand name “Rockwheel.” The company is collaboration between Rokla GmbH and British engineer Ian Webster.

The Rockwheel is suitable for use in quarrying, demolition and building renovation, roadwork, trench construction, civil engineering, tunnelling, cutting slots and ditches, frozen ground, special underground engineering, removal of tree stumps and extraction of materials. According to the company, the Rockwheel can be a strong alternative whenever blasting is forbidden or not practical. Rockwheel cutting units work just as well underwater as in dry conditions without having to be modified.

“Our three-part Rockwheel cutting units provide the required maximum performance at all times but are significantly lighter in weight than those of the direct competitors,” said company founder Robert Piasecki. “As a result it is possible to achieve a powerful performance with Rockwheel cutting units – even with smaller excavators.”

All Rockwheel cutting units are equipped with high-torque hydraulic engines and are designed so that the picks, which are mounted on the drums at an optimal angle, can penetrate the material with maximum power.

In the middle-sized and medium-performance class, the Rockwheel cutting units have only three main components: the housing, motor and cutting heads (with picks). Currently the largest Rockwheel cutting unit being produced is for 4-ton excavators with a power of 140 kW to 220 kW.

The cutting heads of the cutting units operate smoothly and quietly while operating and rotate at a speed that achieves outstanding excavation and ensures a clean profile, the company said. The design and power components cutting units are adjusted so that the picks grip strongly and hardly ever bounce.

The Rockwheel is available internationally.

Rokla GmbH, www.rockwheel.com