4-1/8” S21
1Pages

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Catalog excerpts

4-1/8” S21 - 1

FEATURES Milled tooth cutting structure with hardfaced A-shape gauge rows. DRILLING APPLICATIONS Designed to drill soft to medium formations, compressive strength of which doesn't exceed 45 MPa (6500 psi). These include shale, limestone, sandstone, mud stone, and dolomite. One flank hard-faced tooth. DESIGN SPECIFICATIONS Bearing Type Bearing Seal Type Cutting Structure Milled tooth Roller-ball-friction bearing type with thrust button. Wear resistant tungsten carbide hardfacing on leg. OPERATING PARAMETERS Weight on Bit* Rotary Speed* - Actual drilling parameters must be determined for specific applications. Copyright © 2017 VALCO. All Rights Reserved. Note: Due to continuous improvement of VALCO products, the design is subject to change without prior notice.

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