UNIA

8-1/2” IADC 535M

  • Type: MM3GX
  • Diameter: 8-1/2”
  • Bearing type:
    roller, sealed
  • Cutting structure:
    medium tungsten carbide inserts
  • Legback protection:
    shirttail hardfacing and tungsten carbide inserts
  • Thread size and type:
    pin 4-1/2 Reg

Rollers cone bits with cutting structure based on high-quality tungsten carbide inserts adapted to drilled formations in all applications. In our solutions, we use sealed and unsealed bearings depending on the customer’s conditions and preferences. To increase gauge protection, wear-resistant carbide inserts and hardfacing have been used. Optimised ROP is ensured by effective flushing of cutting structure and hole bottom. Sizes available: from 2-3 / 8” to 28” (711.2mm).

Optimal ROP obtained by precisely combining the cutting structure and effective flushing system.
Exceptional bit reliability thanks to optimized bearing system.
Guarantee of drilling long intervals and maintaining hole geometry due to use of advanced gauge protection technology.