Indexable Inserts
What is an Indexable Insert?
An indexable insert is a replaceable cutting tip used in turning, milling, and drilling operations. Unlike traditional solid tools, the insert can be rotated or replaced when its cutting edge becomes worn, allowing for continuous use of the tool body and reducing tooling costs.
These inserts come in a variety of shapes, grades, and coatings to suit different materials and machining requirements. They are widely used in industries such as mold manufacturing, aerospace, and automotive for efficient, high-precision machining.
Key Benefits of Indexable Inserts:
Cost Efficiency: Only the insert is replaced, not the entire tool.
Consistent Performance: Provides uniform cutting quality and surface finish.
Versatility: Compatible with multiple machining operations, including turning, milling, and drilling.
Reduced Downtime: Quick replacement reduces production interruptions.
By utilizing GreatCNC indexable inserts, manufacturers can achieve longer tool life, stable machining performance, and increased productivity, making them a vital solution for precision metalworking.
30+
Years
Experience
GreatCNC-your one-stop source for precision indexable inserts
GreatCNC is your reliable partner for indexable cutting solutions, specializing in turning, milling, and drilling inserts.
With over 30 years of industry experience, our team has helped more than 100 factories worldwide reduce tooling costs by up to 50% while maintaining consistent cutting accuracy and tool life.
We supply both original brand inserts (Sandvik, Kennametal, Mitsubishi, etc.) and cost-effective alternatives from brands like ZCC-CT, GESAC, and DESKAR, ensuring you always get the best match for your machining needs.
Backed by professional technical support and global logistics, GreatCNC provides you with faster delivery, customized recommendations, and responsive service — helping you achieve higher productivity with lower cost.
Why Choose Us
1. With a team of over 400 engineers, GreatCNC leverages a market-oriented IPD integrated product development system to innovate indexable inserts, turning inserts continuously, milling inserts, and drilling inserts.
2. We operate multiple technology platforms, including our Xiamen Tungsten Technical Research Center, National Enterprise Technology Center, 3 Postdoctoral Research Stations, and National Tungsten Materials Engineering Technology Center, ensuring cutting-edge solutions for precision machining.
3. We implement lean production and 6σ management, supported by a skilled team of over 600 craftsmen, state-of-the-art manufacturing equipment, precision inspection instruments, intelligent warehousing, and over 6 million pieces of standard inventory, guaranteeing consistent quality and fast delivery.
4. Our technical sales team of over 200 experts serves customers worldwide, providing timely solutions, processing guidance, and technical support for every project.
5. Through our Solution Center and Youlu Service Center, we offer customized machining solutions, tool optimization, and regrinding services, helping clients maximize efficiency, reduce costs, and achieve stable production with high-performance indexable inserts.
Countries
years experience
Partners
End Users
Different Types of Indexable Inserts
Turning Inserts
| Picture | Blade Series | Shape | Tip Angle | Cutting Layer | Coating | Features | Application |
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CNMG Insert |
Diamond | 80° | Medium machining /finishing | TiN/TiC coating | The blade has good stability, is suitable for large cutting volume, is vibration-resistant, and wear-resistant | General-purpose turning, suitable for machining medium-hard materials such as steel and cast iron |
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DNMG Insert |
Diamond | 55° | Finishing | TiAlN coating | Sharp blades for precision cutting and high surface finish | Finishing, suitable for precision machining and high-hardness materials |
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SNMG Insert |
Square | 90° | Rough/medium machining | TiN/TiCN coating | The blade has high strength, is suitable for large cutting volumes, and interrupted cutting | Rough machining, large cutting volume, suitable for steel and cast iron machining |
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WNMG Insert |
Trigon | 80° | Rough/medium machining | TiN/TiCN coating | With multiple cutting edges, suitable for high feed rate processing and strong cutting ability | External turning with large stock removal, suitable for steel and cast iron |
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TNMG Insert |
Triangle | 60° | Medium machining/finishing | TiN/TiCN coating | Suitable for multi-tip use, cost-effective, and high precision | Highly efficient finishing, widely used in the finishing of steel and cast iron |
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VCGT Insert |
Diamond | 35° | finishing | TiAlN coating | The blade is sharp, suitable for high-precision processing, high-temperature resistant, and suitable for fine cutting | Finishing, suitable for hard materials, alloys, cast iron, etc. |
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RNMG Insert |
Round | 360° | Rough/medium machining | TiN/TiCN coating | The blade has high strength, is suitable for heavy cutting, andhas has good cutting stability | Large cutting volume, heavy-load cutting, suitable for cast iron and steel processing |
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HNMG Insert |
Hexagon | 120° | Medium processing | TiN/TiCN coating | The use of multiple tool tips is highly economical and suitable for machining complex workpieces. | Highly efficient turning, suitable for steel, stainless steel, and other materials |
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DCMT Insert |
Diamond | 55° | Medium/rough machining | TiN/high temperature resistant coating | Provides good stability and wear resistance, suitable for medium-load cutting operations | Suitable for medium-load cutting of steel, cast iron, alloy steel, etc. |
Milling Inserts
| Picture | Blade Series | Shape | Tip Angle | Cutting Layer | Coating | Features | Application |
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APKT Insert |
Parallelogram | 85° | Medium/fine finishing | TiN/TiCN coating | High hardness and wear resistance, suitable for medium processing and fine milling | Used for fine milling of aluminum alloy, steel, cast iron, and high-precision processing |
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RCGT Insert |
Round | 360° | Medium/fine finishing | TiAlN coating | Sharp blades, suitable for finishing hard materials and high surface finish processing | For finishing and high-precision milling of alloy steel, cast iron and stainless steel |
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SEKT Insert |
Square | 90° | Rough to medium machining | TiN / TiCN | Strong cutting edge, good for interrupted cuts. | Suitable for face milling and 90° shoulder milling. |
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SDMT Insert |
Square | 90° | Rough to medium | TiN / TiCN | Economical double-sided insert, good stability. | Used for face milling of general steel and cast iron. |
Drilling Inserts
| Picture | Blade Series | Shape | Tip Angle | Cutting Layer | Coating | Features | Application |
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WCMT Insert |
Trigon | 80° | Finishing/roughing | TiN/TiCN coating | Suitable for large cutting volume and heavy load drilling, the blade has strong wear resistance. | Used for drilling with large cutting volume and high feed rate, suitable for aluminum alloy, steel, cast iron, etc. |
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WCMX Insert |
Trigon | 80° | Medium machining | TiAlN / TiN | Double-sided insert, high stability and chip evacuation. | General drilling and counterboring operations. |
Our Service
Direct Sourcing from Global Brands
We provide original indexable inserts directly sourced from world-leading manufacturers such as Sandvik, Kennametal, Mitsubishi, OSG, Guhring, Seco, and Walter. Every insert is guaranteed to be genuine, ensuring consistent cutting performance and long tool life for your production needs.
Cost-Effective Chinese Alternatives
By partnering with trusted domestic brands like ZCC-CT, DESKAR, GESAC, OKE, and HARDSTONE, we offer high-performance alternatives that deliver 80%–95% of international brand standards — helping you reduce purchasing costs by 30%–50% without compromising quality or precision.
Customized Cutting Tool Solutions
Our experienced engineers provide tailored tool recommendations based on your material, machining type, and cutting conditions. From coating selection to chip breaker design, every detail is optimized to improve efficiency and extend insert life.
Multilingual Technical & Sales Support
With a professional team fluent in English, Spanish, Italian, German, Vietnamese, and Russian, we provide smooth communication and technical guidance to customers worldwide — from initial consultation to after-sales service.
Free Trial & Cost-Reduction Programs
We welcome customers to test our performance with free trial samples. Our team also provides exclusive cost-saving programs, enabling you to verify performance before large-scale procurement and achieve higher ROI in production.
Global Partnership & OEM Service
Serving over 100 factories and distributors in 40+ countries, we support OEM branding, custom packaging, and flexible MOQs. Whether you’re a distributor or end user, we’re committed to helping your business grow globally.
Indexable Inserts Application
- 1
Mold Manufacturing Industry
Our indexable milling inserts, turning inserts, and drilling inserts are ideal for precision mold machining of tool steels and copper alloys. With advanced coatings and sharp cutting edges, they ensure excellent surface finish, long tool life, and high machining stability in cavity and core processing.
- 2
Aerospace Industry
For aerospace components such as turbine blades and engine housings, our indexable inserts deliver high wear resistance and cutting precision when machining titanium alloys and heat-resistant superalloys. They help achieve tight tolerances and smooth surfaces under demanding conditions.
- 3
Automotive Industry
Our turning, milling, and drilling inserts are widely used in automotive part machining, including engines, transmissions, and brake systems. Designed for high-speed and mass production, they offer stable performance, fast chip removal, and reduced machining costs.
Machining tool steels and copper alloys for injection mold cavities. The inserts achieved smooth surface finish, consistent dimensions, and extended tool life, reducing polishing time and minimizing production downtime.
Machining turbine blades and engine housings. The inserts provided stable cutting, superior surface integrity, and reduced cycle time, effectively solving tool wear and quality inconsistency issues in aerospace production.
Machining aluminum and steel engine blocks, gear housings, and brake parts. The inserts ensured fast chip removal, stable performance, and lower tooling costs per part, supporting continuous high-volume production with consistent quality.
Our factory & equipment
Our production base is equipped with state-of-the-art CNC grinding machines, precision coating systems, and automated inspection equipment, allowing us to maintain tight tolerances and consistent quality across all our CNC inserts. We operate under a strict ISO 9001 quality management system, with every batch of inserts undergoing dimensional accuracy checks, edge integrity inspection, and coating adhesion testing before delivery. This ensures that each insert performs reliably under demanding machining conditions.
Individual Packaging: Each insert is placed in a transparent plastic compartment box to ensure visibility and prevent scratches or damage. The boxes are designed to fit the specific shape and size of each insert (such as square, triangular, round, or diamond shapes), providing secure storage.
Bundling & Grouping: Multiple individual boxes are bundled together with yellow binding straps for easy handling and organization, keeping batches of inserts neatly grouped.
Outer Packaging: For bulk shipping, the bundled insert boxes are packed into sturdy cardboard cartons. These cartons offer excellent protection against external impacts, moisture, and dust during transportation and warehousing.
Labeling: Each individual box and outer carton can be labeled with product specifications (e.g., insert type, grade, size, and application), facilitating quick identification and inventory management.
Crankshaft Semicircular Holes Machining Case
This case focuses on the rough boring process of crankshaft semicircular holes in cylinder blocks, aiming to achieve tool life parity with imported alternatives while ensuring surface quality meets customer requirements.
Machining Parameters and Conditions
Tool Name: Positive Angle Steel Turning Insert Series
Insert Grade: GP1225
Insert Specification: CCMT09T308-GP
Workpiece Material: HT250 (HB240)
Cutting Speed: 878 RPM (143m/min)
Feed Rate: 500mm/min (fz=0.15mm)
Depth of Cut: ap=0.6mm
Cutting Method: Rough Boring
Cooling Method: Dry Cutting
Cutting Performance
Tool Life: The tool life is equivalent to that of tools from leading international suppliers, reaching 600 workpieces.
Surface Quality: The machined surface quality fully meets customer technical specifications.
Switch to our cost-effective indexable inserts proven in crankshaft machining — matching tool life, improving surface finish, and saving up to 40% on tooling costs.
Request a free quote or tool recommendation today.
Our Certificate
FAQ
What are indexable inserts and how do they work?
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Indexable inserts are replaceable cutting tips used in turning, milling, and drilling operations. When one cutting edge wears out, the insert can be rotated or replaced, reducing tooling costs while maintaining consistent performance. They are widely used in mold, aerospace, and automotive manufacturing for high-precision machining.
Can your inserts handle the materials I work with?
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Yes. Our turning, milling, and drilling inserts can machine steel, stainless steel, aluminum, copper alloys, titanium, and superalloys. This means you can achieve high precision and smooth finishes across multiple materials without switching tools frequently.
Can your inserts reduce my production costs?
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Absolutely. By using our high-performance Chinese alternatives, many clients have cut tooling costs by 30–50% without sacrificing precision or surface finish, giving you better ROI on every part produced.
Can I test your inserts before buying in bulk?
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Of course. We provide free trial samples, so you can verify performance, surface finish, and tool life before placing large orders, giving you confidence and reducing procurement risk.
Are your inserts suitable for high-speed or heavy-duty operations?
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Yes. Our inserts are designed for high-speed, high-feed, and heavy-duty machining, ensuring stable cutting, fast chip evacuation, and consistent results, even in demanding industries like automotive, aerospace, and mold manufacturing.
Great Magtech (Xiamen) Electric Co., Ltd is one of the most professional indexable inserts manufacturers and suppliers in China. If you're going to buy high quality indexable inserts, welcome to get more information from our factory. Good service and competitive price are available.