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The Single Crystal Diamond Ball Nose Arc Milling Tool, with its R-angle design, allows for better handling of curved surfaces and chamfers during the machining process, making it suitable for applications requiring high precision and smooth surfaces.
Tool specification: non-standard tool (customized)
Processing materials: various infrared materials, polymer materials
Features: super finishing, mirror finish
Applications: Optical lenses, (non-)spherical lenses and Fresnel lens mold cores, contact lenses, etc.
Tell us the surface finish (Ra), material and CAM-toolpath strategy — we’ll suggest the ideal ball radius and R-angle profile, and can produce small runs or tooling samples for in-house validation.
Installed on the high-speed machining center, a single crystal diamond ball nose/arc milling tool is a kind of ultra-precision machining tool, which is mainly used in the processing of non-ferrous metals and non-metallic hard brittle materials such as nickel, copper, optical glass and silicon wafers.
The diamond arc milling tool, with its R-angle design, allows for better handling of curved surfaces and chamfers during the machining process, making it suitable for applications requiring high precision and smooth surfaces.
Designed for flawless 3D contouring and superior surface integrity, our single-crystal diamond ball-nose and R-angle arc mills are the go-to choice for precision freeform machining. The ball-nose profile maintains a true, stable radius for complex surfaces while the R-angle arc variant combines rounded transitions with stronger edge geometry to handle chamfers and curved fillets with excellent surface finish and minimal tool wear. These tools produce smooth scallop patterns that require little to no hand finishing — a major throughput advantage for mold, optical and consumer parts.
High-precision mold & die finishing, optical lens and sensor component profiling, miniature consumer device housings, and any application that demands consistent radii and exceptional surface quality on contoured geometries.
Precision electronic parts: For example, the miniature structural components inside smart phones, wearable devices and the processing that requires machining with extremely high precision and surface finish.
Optical Element: Micro-contour and curved surface processing of optical devices such as lenses, prisms, and filters.
· True, repeatable ball radius and R-angle geometry for high-accuracy 3D profiling and mold cavities.
· Single-crystal diamond cutting faces deliver mirror finishes and resist abrasive wear in silicon-rich aluminum alloys, composites and graphitic materials.
· Optimized rake and relief for stable cutting on contoured surfaces — fewer step marks, better surface consistency between passes.
Compared with conventional carbide ball ends, our single-crystal diamond variants keep their radius and surface integrity longer under abrasive loading, cutting down tool changes and post-processing. We provide custom radii, length-of-cut options and balanced toolholders to integrate seamlessly into your CAM strategies.
| Single Crystal Diamond Ball Nose/Arc Milling Tools | ||
| Diamond Types | Natural Diamond | Yes |
| Synthetic Diamond | Yes | |
| Minimum Radius | 0.03mm | |
| Maximum Radius | 10mm | |
| Arc | 90° | |
| Included Angle | 20° to 30° | |
| Rake Angle | 0° | |
| Clearance Angle | 10° | |
| Cutting Edge Waviness | 2.0μm to 30nm | |
| Holder | Solid Shank | Yes |
| Shank Material | Tungsten | Yes |
| Shank Type | Round 3.0, 3.17, 4.0, 6.0 & 6.35 mm Ø | Yes |
| Minimum length 30mm | Yes | |
| Other Sizes Available on Request | Yes | |
Litian Century Diamond Tools creates all the diamond arc milling tools you need with the radius ranging from 0.03mm to 3mm. Whatever you need, please check with us and we can make it.
① After-sales Services
We have professional after-sales service team and after-sales system which called "Litian Century after-sales system". This system is used to manage the information of after-sales maintenance products, and can realize the functions of inquiring the grinding progress, grinding cost and feedback of after-sales problems. Advantages of the system: "zero consultation, more time saving, more convenient, more efficient", users can log in at any time to check.
② Quality Assurance
The company is equipped with advanced inspection equipment and trained inspection personnel which assure us carry out inspections during each process. At the same time, every single tool can be sent to our customers after the professional inspection by Quality Control Center.
③ Repair Service
For the multi-way tools which can be repaired, we can bring your monocrystalline diamond tools back to "new tool" condition in a very short turnaround time. A after-sales service system is available which can let you know the condition of your repaired tools in real time.
④ Packages
We customize special packaging box for the tool, in line with the mechanical structure of the human body, that is, convenient disassembly and safe.
⑤ Delivery
We can arrange delivery your goods by air, DHL, FedEx and other ways your need.
Our products enjoy a great reputation for its good surface finish, high precision and complete product variety. We serve the customers from USA, Mexico, Germany, Belgium, Russia, South Africa, Egypt, India, Pakistan, Korea, Japan and all Southeast Asian countries.
