LINKUT Precision Tools specializes in manufacturing custom circular diamond turning inserts, designed for ultra-precision machining of non-ferrous metals, acrylic, resin, copper alloy and optical plastic components. These round tool holders are widely used in optical lens processing, jewelry engraving, decorative knurling and precision instrument turning fields.

Our circular diamond inserts support flexible customization on nearly every dimension and material. The tool tip can be selected from natural diamond, MCD single crystal diamond, CVD diamond and PCD polycrystalline diamond to match different processing requirements. MCD delivers superior mirror cutting results for high-precision finishing; PCD offers excellent cost performance for high-volume rough and semi-finishing work.

The round tool body is available in three substrate options: 304 austenitic stainless steel, common stainless steel and tungsten carbide. The diameter ranges from 20 mm to 40 mm, while body thickness can be customized between 2.5 mm and 6 mm. The tip geometry, cutting angle and cutting edge radius can all be adjusted according to your workpiece and lathe equipment.

The tungsten carbide substrate version is our most popular choice. It features high rigidity, strong vibration resistance and stable performance during continuous high-speed cutting. The vacuum brazing process firmly bonds diamond tip with the circular base, preventing tip peeling under long-time production. Fine edge honing guarantees ultra-low waviness, which is essential for mirror surface finish on brass, beryllium copper and optical resin.

This circular diamond insert fits well on many small precision lathes and special turning machines. It is favored by optical workshops, jewelry factories and medical component manufacturers. Many customers use it for lens blank turning, metal surface knurling and fine engraving work.

LINKUT has rich experience in custom superhard diamond tool solutions. From drawing review, raw material selection, vacuum brazing to final edge inspection, every production step is strictly controlled. We provide sample testing service so you can verify cutting performance on your own machine before bulk order.

If you are looking for reliable custom diamond cutting tools for ultra-precision turning, LINKUT can tailor the circular inserts to meet your unique machining parameters. Reduce surface polishing work, improve part consistency and extend tool service life with our custom diamond inserts.