Roller-bit drilling

      Roller-bit drilling - a drilling method that uses a roller bits. In roller-bit drilling, rock is cut by steel or hard-alloy teeth projecting from rolling cutters, which rotate on the drill-bit bearings. Inturn, the drill bit rotates at a rate of 60–600 rev. and presses against the bottom hole with a high axial force of 500-2,000 kg per cm of the bit diameter. The teeth of the rolling cutters roll over the bottom hole and, owing to the large stresses that develop in the area of contact between the teeth and the rock, cut the rock by crushing and chipping. As the hardness of therock increases, the rotation rate decreases and the axial force increases. Destroyed at the mine the rock is removed to the surface by air compressor, mud pump, or a combination of these methods. The method has found very wide application.

      Drilling rigs for roller-bit drilling

    1. Price from $ 42 600

      Modern drilling rig URB-12.ZBT meets the highest requirements of professionals. An installation created by the renowned and reliable machine URB-2A-2, which took a serious test of time and to be recognized by more than 4500 companies in Russia and abroad.
    2. Price from $ 22 650

      Drilling Technologies Factory produces the most reliable and multipurpose rig URB-2A-2. The Engineering Department of the company constantly works on improvement and modernization of various plant components. Production Department introduced a number of technical solutions to increase the service life of the rig.
    3. Price from $ 29 450

      Drilling Technologies Factory produces rig URB 2D3 chassis all-wheel drive all-kind of vehicles or crawlers. Production Department introduced a number of technical solutions to increase the service life of the rig.
    4. Price from $ 18 700

    5. Price from $ 9 550

      Drilling rig MBU - ZBT-160 «Belka» is used for water well drilling, soil investigation drilling and geotechnical drilling. This rig allows working in very different project sites, using common drilling equipment.
    6. Price from $ 55 350

      SBU-14.ZBT is designed for companies operating in the engineering surveys, well drilling, diamond drilling and drilling in the construction.