IADC Classification: IADC 117 / IADC 127 / IADC 217
Cutter Type: Steel Milled Teeth (Hardfaced with Tungsten Carbide)
Featured Sizes: 8-1/2", 8-3/4", 12-1/4", 17-1/2" (Full size selection available)
Thread Connection: Standard API Regular Pin
Bearing Structure: Non-Sealed Roller Bearing (117) / Sealed Roller Bearing (127 / 217)
Formation Suitability: Very Soft to Soft Formations (Sticky clay, mudstone, shale, soft gypsum)
IADC 117 / 127 / 217 Series Steel Tooth Tricone Bits: Maximum ROP in Soft & Loose Formations
When drilling through loose topsoil, sticky clay, un-compacted shale, or soft sedimentary strata, heavy tungsten carbide insert bits can suffer from low penetration rates and mud-balling. Bloom Machinery’s IADC 117, 127, and 217 Steel Milled Tooth Tricone Bits are specifically tailored to maximize your penetration speed (ROP) while keeping consumables costs exceptionally low.
These bits feature long, aggressively angled steel teeth that are directly milled into the cone body and heavily hardfaced with premium tungsten carbide welding material to combat mechanical wear. The IADC 117 configuration uses an open (non-sealed) roller bearing, providing the ultimate budget-friendly solution for shallow agricultural water well boring and top-hole construction piling. The IADC 127 and 217 series upgrade to high-durability sealed roller bearings, extending downhole hours when encountering interbedded medium-soft layers. With streamlined fluid nozzle placement, our steel tooth lineup ensures rapid cutting discharge and continuous, trouble-free running.
Bit Size (Inch) | Bit Size (mm) | Available IADC | API Standard Pin Connection | Cutting Structure & Wear Feature |
5-7/8" | 149.2 mm | IADC 117/127/217 | 3-1/2" API Regular | Slimhole design with aggressive tooth pitch for fast pilot hole advancement. |
8-1/2" | 215.9 mm | IADC 117/127/217 | 4-1/2" API Regular | Universal production size; features heavy hardfacing on outer gauge rows to maintain hole gauge. |
8-3/4" | 222.2 mm | IADC 117/127/217 | 4-1/2" API Regular | Mining and geotechnical favorite; optimized tooth height for fast cleaning. |
12-1/4" | 311.1 mm | IADC 117/127/217 | 6-5/8" API Regular | Standard surface hole size; maximum tooth ventilation to prevent bit balling in sticky clay. |
14-3/4" | 374.6 mm | IADC 117/127/217 | 7-5/8" API Regular | Large diameter opening bit; multi-nozzle design for superior mud flushing. |
17-1/2" | 444.5 mm | IADC 117/127/217 | 7-5/8" API Regular | Heavy-duty top-hole opening master; extended tooth profiles for soft overburden strata. |
Contact: Kevin Dai
Phone: 13605749661
E-mail: sales@bloommachinery.com
Whatsapp:+86 13605749661
Add: Hehua Bridge, Yunlong Town, Yinzhou Distric, Ningbo City, ZheJiang Province
