SDFTools Long-Force Drill K Series—Special Tool for Oil Drill Bit Gear Hole Machining

——Designed for High-Hardness Drill Bit Machining, Solving Core Component Manufacturing Challenges in Oil Drilling

I. Product Overview

The SDFTools Long-Force Drill K Series—Special Tool for Oil Drill Bit Gear Hole Machining is specifically designed for the oil drill bit industry. It is suitable for processing high-hardness alloy steels (such as 15MnNi4Mo, 20CrNiMo, etc.), with material surface hardness ranging from HRC 40 to 50. This series offers two drill tip designs (cone-bottom and flat-bottom), combining patented technology and nano-coating processes to provide a high-precision, high-efficiency, and long-life solution for gear hole machining.

II. Applications and Challenges in the Oil Drill Bit Industry

1. Industry Background and Applications
Oil drill bits are core components of oil drilling equipment, widely used in deep-well drilling, geological exploration, and oil/gas development. The quality of gear hole machining directly impacts the drill bit’s wear resistance, impact resistance, and service life, requiring extremely high precision and material performance.

2. Machining Challenges

• Extreme Material Hardness : Drill bit materials (e.g., 20CrNiMo) often reach HRC 50, causing traditional tools to chip or wear rapidly.
• Complex Geometries : Gear holes must meet strict assembly requirements; deviations in hole wall roughness or roundness affect drill bit balance.
• Chip Control Difficulty : High-hardness material chips easily entangle tools, leading to downtime or tool breakage.
• High-Load Conditions : Machining involves high-frequency impacts and high temperatures, demanding exceptional tool wear resistance and thermal stability.

III. Core Advantages of the SDFTools K Series

1. Patented Drill Tip Design

• Cone-Bottom : Self-centering for stable deep-hole machining and reduced eccentricity.
• Flat-Bottom Reamer : Patented tip technology prevents center chipping, ideal for high-flatness hole requirements.
• Large R Corner (R0.5–1mm) : Enhances tip strength and extends tool life.

2. Nano-Composite Coating

• 50% improved wear resistance and heat tolerance up to 1000°C.
• Suitable for HRC 40–50 materials, with single-edge tool life reaching 800–1000 holes (vs. 300–500 holes for traditional tools).

3. High-Precision Machining

• Hole accuracy IT6–IT7, roundness ≤0.006mm, hole diameter tolerance ≤0.01mm.
• Hole wall roughness Ra ≤3.2, meeting anti-fatigue requirements under high stress.

4. Cost-Effective Efficiency

• One-pass machining reduces tool changes and auxiliary time, improving efficiency by 40%.
• Supports multiple resharpening cycles (recommended: (effective blade length – hole depth)/3mm), lowering long-term costs by 30%.

IV. Product Specifications

V. Machining Example

Case: 20CrNiMo Drill Bit Gear Hole Machining

VI. Application Scenarios

• Oil Drill Bit Manufacturing : High-precision gear holes for deep-well and geological exploration drill bits.
• Extreme Conditions : High-temperature, high-impact environments requiring reliability.
• High-Volume Production : Strict requirements for hole consistency and surface quality.

VII. Customer Support & Services

• Pre-Purchase Consultation : Contact our sales team for professional technical support and customized solutions.
• Serviço pós-venda : Comprehensive support including tool resharpening and technical guidance to ensure seamless production.

VIII. Conclusion

The SDFTools Long-Force Drill K Series redefines high-hardness drill bit machining with patented designs, nano-coatings, and precision tolerances. From deep-hole stability to extreme durability, we provide end-to-end solutions for process optimization and cost control. Choose SDFTools for efficient, reliable oil drill bit manufacturing!