Ultra-precision diamond tools are widely applied in the optical industry for the machining of various optical components, including concave and convex lenses, dry interferometric optics, and Fresnel lenses.

Litian Century Diamond Turning Tools specializes in ultra-precision diamond tools designed for machining intricate components from materials like crystals, metals, plastics, ceramics, and optical glass. Our diamond tools leverage natural and synthetic diamonds paired with robust shanks to deliver unmatched accuracy, surface finish, and tool longevity. 

With more than ten years of experience in ultra-precision diamond tool grinding, we have achieved continuous improvements by introducing advanced ultra-precision grinding equipment and machining technologies, combined with our long-term dedication to diamond tool manufacturing. 

As a result, we are capable of producing tools with a machining radius of up to R200 mm and achieving a surface waviness of 10 nm. Even for tools with large arc radii, the waviness can be effectively controlled within 100 nm.

The minimum achievable tool nose angle is 15°, and under high-magnification microscopy, the cutting edge appears smooth and free of defects. The surface roughness of both the rake face and the flank face reaches 2 nm, ensuring exceptional cutting performance and surface quality in ultra-precision machining applications.

Key Functions of Ultra Precision Diamond Tools:

◆ Ultra-Precision Machining: Sub-micron tolerances for complex geometries and ultra-smooth finishes.

◆ Material Versatility: Optimized for non-ferrous metals (nickel, copper) and hard brittle materials (optical glass, silicon wafers).

◆ Durability & Consistency: Engineered to minimize tool wear and maintain performance across high-volume production.

Types of Our Ultra Precision Diamond Tools

Ultra Precision Diamond Arc Turning Tool

·  Waviness Controlled: The waviness can be selected between 0.02μm and 1μm.

·  Front clearance angles (conical or cylindrical), radius, waviness, solidshank or insert system, natural and synthetic single crystal diamonds allcan be tailored for your requirement.

Ultra Precision Diamond Turning Tool

Processing V-groove or U-groove.

Sharp point turning tool

·  The included angle range of the diamond sharp point turning tool is 15°-170° which angle error is within ±0.05°.

Grooving turning tool

·  The minimum width of the slot: H0.04mm.

·  The minimum included angle: 2°

Ultra Precision Diamond Milling Tool

The diamond milling tol is used for machining molds or free-form surface of microstructures and can ensure that the axial and radial accuracy of the cutting point is within 0.001 mm range.

Arc milling tool

·  Radius 0.03-3.0mm

·  Shank size Φ3 to Φ6.35mm

·  The waviness can be selected between 0.05μm and 2μm

End milling tool

·  Diameter 0.12-10.0mm

·  Shank size Φ3 to Φ6.35mm

Ultra Precision Diamond Tools Manufacturer | Litian Century

Litian Century manufactures custom ultra precision diamond tools for optical components, precision molds, microstructures and other demanding machining applications. Our product range includes single crystal diamond turning tools, grooving tools, milling tools and ultrasonic-assisted diamond tools.

Natural diamond and synthetic single crystal diamond are available. Tool radius, rake angle, clearance angle, cutting profile, shank and insert configuration can be customized according to your workpiece material, machine and required surface quality.

With more than 20 years of diamond tool manufacturing experience, we combine ultra-precision grinding, controlled edge preparation and high-magnification inspection to produce reliable tools for both prototype development and repeat production.

Materials and Applications

Why You Should Choose Litian Century

As a trusted partner to Ultra Precision Diamond Tools Manufacturer worldwide, Litian Century Diamond Tools is dedicated to delivering cutting-edge solutions that enhance machining performance and product quality.

Nanometer-Level Tool Manufacturing

Our ultra-precision grinding and edge-finishing processes support tool waviness down to 10 nm for qualified designs. Large-radius tools can be manufactured with waviness controlled within 100 nm.

Natural and Synthetic Diamond Options

Both natural diamond and synthetic single crystal diamond are available. The most suitable option is selected according to tool geometry, workpiece material, edge requirements, expected tool life and budget.

Custom Geometry and Shank Design

We manufacture standard and non-standard profiles, including full-radius, sharp-point, grooving, ball nose, arc and micro-diameter tools. Solid shanks and insert systems can be customized to match the customer’s equipment.

Inspection for Reliable Edge Quality

Tool geometry, cutting-edge condition and critical dimensions are inspected using precision measurement and high-magnification equipment. Inspection requirements can be confirmed during the quotation stage.

Technical Support and Relapping Evaluation

Our team can help customers select tools for new machining projects and evaluate used tools for possible relapping. Relapping availability depends on diamond condition, edge damage and the remaining usable geometry.

Industry-Leading Accuracy

Our ultra precision diamond tool radiuses achieve the highest radius tolerances, ensuring superior cutting edge accuracy for your components.

Ask yourself these questions to guide the selection process:

·  What machine tool will be used?

·  What is the workpiece material?

·  What is the desired shape of the end product?

·  What depth of cut is required?

·  Does the finished product need to be optical quality?

·  What level of waviness is acceptable?

·  Are micron or submicron tolerances required?

The more information you have about your application, the easier it is to identify the perfect diamond tool. If you’re unsure or would like expert guidance, simply reach out to our team using the buttons below—we’ll be glad to help you make the right choice

Product Types:

◆ Single Crystal Diamond Turning Tools: Ideal for ultra-precision turning of non-ferrous metals and brittle materials.

◆ Single Crystal Diamond Milling Tools: Designed for precision milling of camera mold kernels, compound eye molds, and microstructure grooves.