Product overview
Carbide Rods with Helical Coolant Hole 15°/30°/40° – for Precision Cutting Tools
Application:
- High‑performance solid carbide drills for deep‑hole machining of steel, stainless‑steel and cast‑iron.
- Special‑purpose cutting tools for automotive parts, mold components and mechanical‑part processing.
- Micro‑drills and long‑length drill bits used in machinery, hydraulic‑valve and energy‑industry production.
Features:
- Optimized helical‑through‑hole design improves coolant circulation along the full‑length rod compared with straight‑hole rods, effectively dissipates cutting heat and enhances chip removal during deep‑hole machining.
- Multiple configurable options including 15°,30°,40° helix angles, 2‑hole and 3‑hole layout; both standard and non‑custom‑made sizes are available for your unique requirements.
- Rigorous tolerance control on outer diameter, hole‑to‑hole spacing and hole‑center deviation, supplied in unground blank or h5/h6 precision‑ground versions for subsequent tool finishing.
- Adopted premium YG‑series tungsten carbide substrate with high hardness and outstanding wear‑resistance, extending service life of finished drill bits.
Technical specifications


Carbide grade
Grade |
ISO code |
Cobait content (%) |
Hardhess (HRA) |
Density (gicm) | T.R.S
| WC Grain size(um) |
Application recommended |
YU06 |
K05-K10 |
6% | 94.0 | 14.75 | 3700 | 0.4-0.5 | Suitable for machining aluminum-magnesium alloys.glass fiber,carbon fiber.wood,harden plastic.eto.lt is recommended for making PCB micro tools and other material drills. |
YG6X | K05-K10 | 6% | 92.5 | 14.92 | 3000 | 07-0.9 | Suitable for machining chiled alloy cast iron, heat-resistane alloy steel,non-ferrous metal,wood,paper,plestic and aluminum-magnesium,etc.it is recommended for making sold carbide drils,milling and reamnors. |
YL10.2 | K20-K30 | 10% | 91.8 | 14.45 | 3800 | 0.7-0.9 | Sutable for machining carbon steel,cast iron,stainless steelheat-resistance steel nickel based alloy and titanium alloy.It is recommended for making diferent specification tools,such as drillis,end mils,sorew tapsrotating file A good material for general-purpose. |
JZ401 | K30-K40 | 12% | 92.0 | 14.15 | 4000 | 0.5-0.7 | Sutable for machining nickel based alloy,titanium alloy,stainless steelmould steel.chiled hardened steel and grey cast iron,eto.It is recommnended for making miling tools and reamers,for high speed machining. |
YG15 | K30-K40 | 15% | 87.6 | 14.00 | 4000 | 1.2-1.4 | Suitable for making solid mould dies and tools for punching operation. |


Faq
They are made of tungsten carbide powder mixed with a binder metal, usually cobalt. This gives them high hardness, wear resistance, and strength.
They are mainly used to make cutting tools, drills, end mills, reamers, and wear parts. They are also used in punches, dies, and other precision tooling applications.
We offer solid round rods, rods with coolant holes, and various lengths and diameters. Custom sizes can be produced according to your requirements.
No. We do not offer free samples. Samples can be provided at cost, and shipping fees are paid by the customer.
Lead time is usually 7–24 days depending on the order quantity. MOQ varies by size and specification. Please contact us for details.





