In core drilling, success begins long before a bit hits the rock face. It starts in the manufacturing workshop—where design meets metallurgy, where tradition blends with technology, and where every gram of diamond grit is optimized for impact. At RAGHU DIAMONDS, we don’t just assemble drill bits—we engineer performance at the molecular level.

Welcome to a behind-the-scenes look into how India’s trusted drill bit manufacturer turns raw materials into reliable drilling tools that power industries across continents.

A Heritage of Engineering Excellence

Founded in 2006 by Mr. Raghuraj Singh, RAGHU DIAMONDS emerged from the heart of Jodhpur, Rajasthan, with one clear goal: to build world-class core drilling tools that thrive in India’s harshest geological zones. Since then, the company has grown into a state-of-the-art manufacturing and R&D facility, supplying diamond core drill bits, reaming shells, PDC bits, and accessories to clients across India and overseas.

But what truly sets us apart is what happens before the bit is boxed and shipped.

Step 1: Material Selection & Powder Metallurgy

Every premium core drill bit starts with superior raw materials. We carefully source:

• Synthetic diamonds for consistent cutting strength and grading accuracy.

• Tungsten carbide powders for durable matrix blends.

• Metal bonding agents (nickel, bronze alloys, cobalt variants) customized for different rock types.

Our engineers use precise powder blending techniques to create the matrix—the metal envelope that holds and exposes diamonds during drilling. Each mix is fine-tuned for specific applications, from granite to shale.

Step 2: Cold Isostatic Pressing (CIP)

Instead of traditional pressing that applies pressure from only one direction, we use Cold Isostatic Pressing (CIP). This technique uses liquid pressure in all directions to form a uniform and dense “green body” of the bit crown.

Why CIP matters:

• Increases strength and longevity of the bit

• Reduces porosity and internal flaws

• Ensures uniform diamond distribution and matrix hardness

This process is critical to delivering bits that resist cracking, chipping, and irregular wear.

Step 3: High-Precision Machining & Shaping

Once the bit crown is formed, our CNC turning centres and vertical milling machines take over. Here, the bit is shaped to exact specifications:

• Thread connections are milled for secure tool assembly.

• Waterways are carved for smooth fluid flow and better flushing.

• Stabilizers and face design are engineered for balanced rotation.

Our machining teams work with tolerances as tight as 0.02 mm—ensuring the bit performs with minimal vibration and maximum drilling accuracy.

Step 4: Vacuum and Atmospheric Furnace Sintering

To fuse the metal matrix and diamond structure into a single unit, we heat-treat the pressed green bit using vacuum sintering and atmospheric furnaces:

• Vacuum sintering removes impurities and enhances bond strength.

• Controlled furnace cycles solidify the matrix and lock diamonds into place.

This step is where the bit gains its heat resistance, grit retention, and cutting integrity.

Step 5: Rigorous Quality Inspection

We never compromise on quality. Each drill bit undergoes:

• Weight and balance checks

• Rock simulation tests

• Diamond exposure measurement

• Thread compatibility inspections

Our in-house testing rigs simulate drilling across different rock formations to verify performance before the bit ever reaches the field.

Step 6: Customization for Real-World Conditions

Whether you’re drilling in the quartzite hills of Rajasthan, the sediment layers of Assam, or exporting tools to oil fields in Africa, we understand every project is unique.

That’s why RAGHU DIAMONDS offers:

• Strata-specific custom matrix blends

• Tailored bit sizes (A, B, N, H, P series)

• Waterway geometry adjustments for high-pressure environments

• Fast turnaround for client-designed bits

This customization helps reduce tool downtime and improves drilling productivity.

From Jodhpur to the World

Our facility may be based in India, but our products travel far and wide. Through robust logistics, L/C & CAD payment terms, and international shipping partnerships, RAGHU DIAMONDS supports clients across:

• Mineral Exploration Projects

• Geological & Hydro Surveys

• Core Sampling for Infrastructure

• Oil & Gas Well Drilling

• Water Borehole Projects

Why Our Clients Keep Coming Back

✅ Consistent performance in extreme conditions
✅ Rapid customer support and expert consultation
✅ High availability and scalable order quantities
✅ Unmatched durability and penetration rates

When you choose RAGHU DIAMONDS, you’re not just buying a bit—you’re tapping into a legacy of innovation and integrity built into every thread, every grit, every cut.

Ready to Upgrade Your Drilling Game?

📞 Talk to our technical team today at +91-98291 89266
🌐 Explore our product range at www.raghudiamonds.com