5 1/2 Inch IADC 537 Tricone Rock Bit for Medium-Hard Formations
- Product Description
| Parameter | Specification | Parameter | Specification |
|---|---|---|---|
| Bit Size | 5 1/2" (139.7mm) | IADC Code | 537 |
| Bit Type | TCI (Tungsten Carbide Insert) Tricone Bit | Connection | 3 1/2" API Regular Pin |
| Bearing System | Precision Journal Bearing | Seal Type | High-Performance Elastomer Seal |
| Recommended Weight on Bit (WOB) | 0.35 - 1.05 kN/mm | Recommended Rotary Speed (RPM) | 40 - 110 r/min |
| Nozzle Configuration | 3 Replaceable Nozzles | Circulation Medium | Drilling Mud / Air / Foam |
| Body Material | High-Strength Alloy Steel | Net Weight | Approx. 32-35 kg |
| Application Formation | Soft to Medium-Hard Rock (Shale, Sandstone, Limestone) | Standard Compliance | API Spec 7 |
Core Advantages
Fast ROP & Long LifeOptimized tungsten carbide insert arrangement ensures efficient rock crushing and high wear resistance. Perfect for shale, sandstone, and limestone, it delivers fast penetration rates and extended bit life.
Reliable Sealed BearingsPrecision-machined, silver-plated bearings with Buna-N seals prevent drilling fluid contamination. The built-in compensator ensures stable lubrication for tough, high-load operations.
Superior Gauge ProtectionReinforced shank and gauge area with hardfacing reduces wear, maintains wellbore size, and prevents undergauge issues.
Wide ApplicationIdeal for water well drilling, oil & gas exploration, geothermal wells, foundation piling, and HDD projects.
Raw Materials
Our tricone bits are built with certified high-strength alloy steel, rigorously tested for strength and durability. Premium raw materials guarantee reliable performance in the toughest drilling conditions.
Production Process
Quality Control
- Raw material chemical & mechanical testing
- 100% dimensional inspection
- Hardness & non-destructive testing (NDT)
- Sealing & lubrication performance test
- Final inspection before shipment
- Full traceability from material to delivery
Applications
- Water Well Drilling
- Oil & Gas Exploration
- Geothermal Development
- Civil Engineering
- Geological Survey
Why Choose HAINAISEN?
- Professional tricone bit manufacturer with years of experience
- Strict API & ISO quality system
- Stable performance & high cost-performance
- Customizable sizes, threads, nozzles
- Fast delivery & responsive after-sales
- Factory direct, competitive price
Packaging & Shipping
- Standard export plywood case
- Moisture-proof, shockproof, anti-collision
- Suitable for sea, air, and express shipping
- Clear labeling for easy identification
Exhibitions
We regularly attend global oil & gas and drilling exhibitions:
- ADIPEC (UAE)
- OTC (USA)
- IPTC
- China International Petroleum & Petrochemical Technology Exhibition
- Local regional drilling expos
Certificates
- API Spec 7-1
- ISO 9001
- CE
- Material test reports
- Factory qualification certificates
FAQ
1. What formations is IADC 537 suitable for?
Soft to medium-hard: shale, sandstone, limestone, clay.
2. Can you customize thread or nozzles?
Yes, API REG, API IF, FHS, custom nozzles available.
3. What is your MOQ?
MOQ: 1 piece.
4. How long is delivery time?
Normally 7–15 days for stock / standard orders.
5. Do you provide after-sales support?
Yes, technical support & quality complaint response.
