Product Overview
The TZ 12 1/4″ IADC 537 TCI (Tungsten Carbide Insert) Tricone Bit is engineered to deliver a high Rate of Penetration (ROP) and exceptional durability in demanding drilling environments. Featuring premium cutting inserts and an advanced dual elastomer sealing system, this bit excels at crushing through medium-hard rock formations with highly abrasive interbeds while ensuring superior bearing protection downhole.
Whether you are working on water well drilling, oil & gas exploration, geothermal wells, or trenchless directional drilling (HDD), the TZ tricone bit ensures extended downhole life and reduced cost-per-foot.
| Parameter | Details & Specifications |
| Brand | TZ |
| Bit Size | 12 1/4 inch (311.15 mm) |
| IADC Code | IADC 537 |
| Cutting Structure Type | Tungsten Carbide Inserts (TCI) |
| Thread Connection | 6 5/8″ API Regular Pin (6-5/8 API REG) |
| Bearing & Seal Type | High-Precision Journal Bearing with Dual Elastomer Seal |
| Nozzle Quantity | 3 Interchangeable Jet Nozzles |
| Circulation Type | Mud / Fluid Circulation |
| Recommended WOB | 0.50 ~ 1.05 KN/mm |
| Recommended RPM | 40 ~ 110 RPM |
Key Features & Advantages
- Dual Elastomer Sealing System: Equipped with a premium compound/dual rubber elastomer seal. The primary seal provides tight grease retention, while the secondary profile protects against abrasive drilling mud and debris, significantly extending the bearing life under high-load conditions.
- Premium Cutting Structure: Optimized arrangement of high-strength tungsten carbide inserts (chisel and conical shapes) maximizes impact resistance and cutting efficiency in abrasive strata.
- Advanced Bearing Protection: The head bearing surface is hardfaced and the cone bearing is silver-plated. This works perfectly with our compound rubber seal to prevent seizure under extreme temperatures.
- Enhanced Gauge Protection: Extra rows of tungsten carbide inserts are strategically placed on the gauge row to prevent premature wear, maintaining a perfect hole diameter.
- Optimized Hydraulics: Three sturdier jet nozzles distribute fluid flow perfectly across the cones, preventing bit balling and speeding up the upward removal of rock cuttings.
Applicable Formations
The IADC 537 cutting structure is ideal for low compressive strength, medium-hard formations with hard abrasive layers, including:
- Medium Shale & Sandstone
- Soft Limestone & Dolomite
- Anhydrite
Target Applications
- Water Well Drilling
- Oil & Gas Drilling Exploration
- Geothermal Well Drilling
- Foundation Piling & Trenchless Hole Opening
Why Choose TZ Brand Drill Bits?
- Factory-Direct Pricing: Get premium quality tools without the middleman markup.
- Strict Quality Control: Every bit undergoes rigorous heat treatment and non-destructive welding inspections to ensure consistent performance downhole.
- Global Delivery & Support: Fast manufacturing lead times and customizable options based on your specific drilling parameters.
Contact Us for a Fast Quote!