Deep hole drilling is an advanced machining process that requires extreme precision, specialised tools, and the perfect setup to achieve flawless results. In this video, we take you behind the scenes at Kelford Cams to show how we use a solid carbide drill to achieve 40xD drilling, cutting 400mm deep with absolute accuracy.
From high-pressure coolant systems to precision setups within 2 microns, we ensure that every drilled hole meets the highest standards. Whether you’re into precision engineering, CNC machining, or high-performance engine components, this video will give you an inside look at the cutting-edge processes we use to manufacture world-class performance parts.
🔧 What is Deep Hole Drilling?
Deep hole drilling is a specialised machining technique used when the depth of the hole is significantly greater than its diameter-typically greater than a 10:1 depth-to-diameter ratio. Standard drills struggle with chip evacuation and precision at these depths, which is why specialised tools and cooling methods are required.
At Kelford Cams, we take deep hole drilling to the next level by using:
✅ A solid carbide drill - Ensuring maximum strength and durability.
✅ 40xD drilling capability - This drill is 10mm in diameter, meaning it can drill as deep as 400mm with precision.
✅ High-precision setup - Our operator clocks the drill to 0.002mm (2 microns) to prevent breakage and ensure accuracy.
✅ 600 PSI (40 bar) coolant pressure - This is crucial for perfect swarf evacuation, preventing clogging and ensuring a smooth cut.
✅ Material removal at 20mm per second - Speed and efficiency combined for optimal machining performance.
🔩 Why Deep Hole Drilling Requires a Perfect Environment
Unlike standard drilling, deep hole drilling is an advanced process that requires:
• Ultra-precise machine calibration to avoid tool breakage.
• Specialised coolant systems to keep the drill from overheating.
• Continuous swarf evacuation to prevent chips from blocking the hole.
• High-speed material removal to maintain efficiency without compromising quality.
If the setup isn’t perfect, the drill can break, ruining the part and potentially damaging the machine. That’s why only top-tier manufacturers invest in the right tools, technology, and expertise to get it right-just like we do at Kelford Cams.
🏁 Why This Matters for Performance Engine Components
Kelford Cams specialises in high-performance cam shafts and cam gears, and precision machining is at the heart of what we do. Every part we manufacture is engineered to handle extreme conditions, high RPM, and race-level performance.
Deep hole drilling plays a crucial role in ensuring our components are:
✔ Lightweight yet strong - Optimised material removal without compromising integrity.
✔ Perfectly balanced - Preventing vibration and unnecessary wear in high-performance applications.
✔ Consistently accurate - Every part meets the tightest tolerances for race-proven reliability.
🚗 Who Benefits from This Technology?
Deep hole drilling is widely used in industries such as:
• Motorsport & Performance Tuning - Engine builders rely on precision-machined components for peak performance.
• Aerospace Engineering - Aircraft components require ultra-lightweight, high-strength materials.
• Medical & Industrial Manufacturing - High-precision drilling is essential for medical devices and industrial tools.
📹 Watch Our CNC Machine in Action!
In this video, you’ll get a close-up look at our deep hole drilling process. You’ll see how we set up the drill, monitor precision levels, and ensure that every hole meets the highest industry standards.
💬 Got questions about CNC machining or deep hole drilling? Drop a comment below! We love sharing our expertise with fellow engineers, manufacturers, and performance enthusiasts.
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