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Drilling inserts are critical components for achieving precise and efficient holes in various materials. The right choice of insert can significantly impact tool life, surface finish, and overall productivity. Understanding the key factors involved will help you select the optimal inserts for your specific drilling applications.
Drill body requires two WCMX050308 inserts; Replace just the inserts instead of the entire tool when the cutting edges wear down
Usable in CNC machines with coolant through capabilities for efficient chip evacuation
Can be used to drill holes with high accuracy and precision; Suitable for a wide variety of materials, including steel, hardened steel, tool steel, stainless steel, plastic, titanium, aluminum, brass, and bronze.
[Applicable]: Recommended for ordinary drilling and cross hole drilling, suitable for shallow drilling and intermittent drilling
[Advantages]: Quickly discharge iron filings, crush iron filings, and do not stick to the drill bit. Suitable for reinforcement and non steel, aluminum, brass, etc
[Material]: TiN coating adopts a carbide matrix, which is wear-resistant and heat-resistant, and is not easy to stick to the tool holder or workpiece. Vacuum hardening, exquisite craftsmanship, easy to cut.
[Point Drill size] Total length: 7 in/180 mm,Diameter：0.98 inches/25 mm，Cutting depth: 4 in/102 mm， Cutting diameter: 0.96 in/24.5 mm
Your Perfect Fit in 0.1 mm Steps – Each drill ships with a standard tip matching your selected diameter (e.g., 10.0 mm tip for 10 mm body). Need a finer size? Optional tips in 0.1 mm increments (10.1, 10.2, etc.) are available separately or upon...
Precision-Grade Stainless Steel Drilling: Achieve flawless holes in tough stainless steel with H13 tool steel body and coated carbide tips. Engineered for 5xD depth, 0.01mm tip tolerance, and ≤0.03mm runout—your solution for burr-free, exact results...
Slash Tooling Costs, Not Performance: Ditch expensive solid carbide drills. Our replaceable-tip design lets you swap only the worn head, keeping the rigid body. Save up to 70% on consumables while maintaining high-speed, high-feed machining power.
Effortless High-Feed Machining: Double spiral flutes and internal coolant dual holes work together to eject chips fast and reduce heat buildup. Push your CNC machining center harder—experience smooth, chatter-free drilling even in alloy and carbon...
Universal Fit, Zero Downtime: Cylindrical flat shank works with ER collets, hydraulic, side-lock, and BT holders. Includes 2 tips, wrench, and screw—mount instantly and get back to production. Ideal for CNC deep-hole drilling machines demanding rigidity...
[Applicable]Recommended for Deep Hole Drilling and cross hole drilling, suitable for shallow drilling and intermittent drilling;
[Advantages] Quickly discharge iron filings, crush iron filings, and do not stick to the drill bit. Suitable for alloy steel, preheated steel and cast iron;
[Drilling Insert]made from tungsten steel, Saber-toothed, Complete specifications and models, the diameter from 10mm-26mm(0.394in-1.02in);
[Drilling Tool Holder]made from 40CrMo,screw type, with double hole internal cooling,
[Package] the drilling tool holder 1piece per pack , the drilling inserts 1piece per pack too ,and these inserts have two clours brown and gray ,will random shipping!
【Upgraded Material】Our adjustable drill tools are made of CNC aluminum alloy, sturdy and durable, made with anodized treatment, wear-resistant and not easy to rust.
【Innovative Design】8 turning holes with different diameters, 13/33", 11/31", 11/35", 21/44", 19/30", 13/22", 5/7", 26/33", which can meet your needs in different scenarios.
【Simple Operation】Our products are compact in size and easy to fix, you just need to tighten the screws to fix it; then you can turn the blade according to your needs and start the simple sanding work.
【Flexible Blade】You can rotate the blade to any size you need, no need to sand, we are equipped with two blades, you can also change the blade, very convenient.
【After-sales service】We have a perfect after-sales service team, you can rest assured that you can buy our products, you can contact us at any time if you have any questions, I will provide you with the perfect solution.
[Dimensions of the Carbide Inserts]: WCMT050308. Insert cut length: 5.4mm/0.212inch, Inner hole diameter: 7.94mm/0.312inch ,Thickness: 3.18mm/0.125inch, IC:7.94mm/0.312inch,r=0.8mm/0.031inch,diamond apex angle: 80°.
[Material] made from solid carbide with mutilayer coated, offer long life and faster cutting speed, low friction coefficient, good wear resistanc,CVD compound coating layer,thin Thickness,hardness=89.0HRA,Bending strength=2.6GPa.
[Suitable for] drilling of steel ,such as 304/316/201/202 stainless steel,wear-resistant and heat-resistant, not easy to stick to the holders or workpieces or break up.
✅ APPLICATION - Our product is a versatile solution for working with General Steel, Carbon Steel, and Non-ferrous Alloy while excelling at spotting, centring, chamfering, engraving, and more, all with a single tool.
✅ SH + ZrN COATING - The Zirconium Nitride (ZrN) coatings are exceptionally durable, improving wear resistance and effectively reducing built-up edges while machining.
✅ HIGH-PERFORMANCE MATERIAL - Crafted from micrograin carbide, this end mill offers exceptional toughness, durability, and machinability, delivering outstanding performance and great value for its price.
✅ FINE WORKMANSHIP - Our products deliver outstanding high accuracy with an error of -0.02mm, empowering users to achieve professional cutting quality effortlessly.
✅ DEDICATED SUPPORT - Feel free to reach out to us via Amazon for the Cutting Condition Data, ensuring you get the most suitable product for your needs.
High Efficiency: Feed rate 2-3 times higher than ordinary drill bits, efficiency increased 6-7 times. No chip removal required, continuous machining.
Economy: Indexable inserts, replace when worn, no regrinding required. Four cutting edges, high utilization. Machining diameter up to D50-60mm.
High Precision: High hole accuracy and good surface finish. Can correct hole position accuracy. Can replace some boring tool work.
Multifunctional: Can drill directly on inclined surfaces (<30°). Supports intermittent cutting, stepped holes, chamfering, and eccentric drilling. Adaptable to different materials by changing inserts.
Excellent Chip Removal: Internal cooling system, short chips automatically removed. Smooth chip removal in deep hole machining.
Simplified Process: No need for pre-drilling a center hole. Flat bottom surface of blind holes, eliminating the need for flat-bottom drill bits.
Last update on 2026-07-16 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Drilling Inserts
Understanding Insert Types
Drilling inserts come in various geometries and materials, each suited for different tasks. Carbide inserts offer excellent hardness and wear resistance, making them ideal for machining harder materials like steel and cast iron. Ceramic inserts are even harder but more brittle, best for high-speed machining of non-ferrous metals and high-temperature alloys. Polycrystalline Diamond (PCD) inserts provide the ultimate hardness and wear resistance, primarily used for abrasive non-metals and composites.
Material Considerations
The material you intend to drill is the most crucial factor when selecting an insert. For general-purpose steel and cast iron, standard carbide grades are usually sufficient. For stainless steel and difficult-to-machine alloys, consider inserts with specialized coatings like TiAlN or AlTiN for improved heat resistance and reduced friction. For softer materials like aluminum or plastics, uncoated or diamond-coated inserts can prevent buildup and ensure a clean cut.
Geometry and Coatings
Insert geometry affects chip formation and evacuation. Positive rake angles are generally used for softer materials and lighter cuts, promoting easier chip breaking. Negative rake angles are stronger and better suited for harder materials and heavier cuts. Coatings add a thin, hard layer to the insert surface, enhancing performance. Common coatings include Titanium Nitride (TiN), Titanium Aluminum Nitride (TiAlN), and Diamond-Like Carbon (DLC), each offering specific benefits like increased hardness, reduced friction, or improved thermal resistance.
Frequently Asked Questions
What is the difference between coated and uncoated inserts?
Coated inserts have a thin layer of material applied to their surface, enhancing hardness, wear resistance, and heat tolerance. Uncoated inserts rely solely on the base material's properties and are often used for softer, non-ferrous metals where coating buildup can be an issue.
How does insert geometry affect drilling?
Insert geometry, including the rake angle and edge preparation, influences chip formation, chip evacuation, and cutting forces. Positive geometries are generally for softer materials, while negative geometries are for harder materials, offering greater strength.
Can I use the same inserts for drilling metal and wood?
Generally, no. Inserts designed for metal are typically made of carbide or diamond and are too hard and brittle for wood, potentially causing damage. Wood drilling bits have different geometries and materials suited for softer materials.
What does 'grade' mean in relation to carbide inserts?
The 'grade' of a carbide insert refers to its composition and microstructure, which determine its suitability for different workpiece materials and cutting conditions. Higher grades usually indicate greater hardness or toughness.
How do I know when to replace a drilling insert?
Signs of a worn insert include increased cutting forces, poor surface finish, dimensional inaccuracies, and audible changes in the cutting sound. Early replacement prevents tool breakage and damage to the workpiece.
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