Carbide drills for deep holes with stable chip evacuation and straightness.

Drilling Tools for Deep, Straight Holes
Deep-hole drilling tools engineered around straightness, stability, chip evacuation, and coolant delivery — configured to the hole, workpiece, machine, and production conditions.
Successful deep-hole drilling depends on the tool, machine, guide strategy, coolant delivery, and cutting parameters working together.
Tool geometry and process conditions are evaluated to control drift over the required drilling depth.
Flute, cutting-edge, and coolant strategy are selected to move chips reliably out of the hole.
Tool construction and setup are reviewed to limit vibration and deflection over extended reach.
Non-standard diameters, lengths, and interfaces can be engineered after the application is confirmed.
Provide the hole diameter and depth, entry and exit conditions, straightness and finish requirements, workpiece material, machine type, spindle interface, coolant pressure and flow, and expected volume. JIAYI will review whether the proposed tool and process are suitable before quotation.

Open any tool for dimensions and drawings, or request a quote for a modified version.
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5 ProductsStep drills and special-profile drills made to your drawings or samples.
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4 ProductsSpecial-profile milling cutters made to your drawings or samples.
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12 ProductsRoughing and finishing cavity tools for Danfoss-compatible cartridge valve cavities.
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3 ProductsCarbide drills for deep holes with stable chip evacuation and straightness.
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12 ProductsCarbide, cermet and welded reamers for high-precision and deep-hole bores.
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1 ProductsHigh-speed steel milling cutters for general and interrupted machining.
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21 ProductsHSS and HSS-E spiral flute, straight flute and forming taps.
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4 ProductsRoughing and finishing cavity tools for HydraForce-compatible cartridge valve cavities.
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8 ProductsPort forming cutters for ISO 1179 BSPP (G thread) ports.
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4 ProductsPort contour cutters for ISO 6149 metric thread ports.
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8 ProductsThread mills for titanium alloy and stainless steel orthopedic locking plates.
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6 ProductsRoughing and finishing cavity tools for Parker-compatible cartridge valve cavities.
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2 ProductsCarbide and HSSE end mills for engineering plastics, acrylics and composites.
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5 ProductsPort contour cutters for SAE J1926 straight thread O-ring ports.
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16 ProductsRoughing and finishing cavity tools for Sun Hydraulics-compatible cartridge valve cavities.
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3 ProductsT-slot and undercut cutters for slots, grooves and keyways.
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23 ProductsTungsten carbide thread mills for a wide range of thread standards.
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38 ProductsComplete range of cavity form tools compatible with Sun Hydraulics, HydraForce, Parker and Bosch Rexroth cartridge valve standards.
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6 ProductsPCD tipped and diamond coated tools designed for clean, delamination-free machining of carbon fiber, GFRP and other composite stacks.
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31 ProductsSolid carbide drills, indexable drills, reamers and boring bars engineered for tight tolerance hole production in hydraulic manifolds and valve bodies.
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31 ProductsHigh performance milling cutters with TiAlN and AlTiN coatings for steel, stainless and superalloy machining.
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17 ProductsSingle-pass port tools producing complete port form, chamfer and thread relief in one operation. Available in all major hydraulic standards.
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61 ProductsComplete threading program including taps, solid carbide thread mills and indexable inserts for UN, metric, NPT and BSPP threads.
View ProductsWe are still adding this range to our online catalog. These tools are available made to order: send your drawing or sample and we will quote sizes, lead time and price, or contact our team for current availability.
Tools in this category are produced on request to your drawing, sample or specification. Send us your requirements and our engineers will reply within 24 hours.
Process-level review. The recommendation considers chip control, coolant delivery, stability, and guidance — not only the drill diameter.
Geometry for the application. Cutting geometry, substrate, coating, and length are matched to the confirmed material and machine conditions.
Custom engineering. Special reach, diameter, and interface requirements can be developed from the hole drawing and process data.
Send the hole drawing and complete process data, especially coolant capability and machine configuration. Our engineers will review the application before proposing and quoting the tool.
Request custom tool quote →