02 April 2026
The advanced grinding solutions includes:
JAINNHER JHC-18S NC1 centreless grinder
Bespoke diamond grinding wheel by DK Holdings
Through-feed method for carbide blanks
Automatic X-axis compensation to 0.001mm
RK International Machine Tools has supplied a new JAINNHER JHC-18S NC1 single-axis centreless grinding machine to a leading European carbide tooling supplier, in a project that showcases a powerful partnership between two established UK companies. This collaboration demonstrates an advanced grinding solution designed to meet the industry’s demanding needs.
The machine, part of the renowned JHC Series from Taiwanese manufacturer JAINNHER, was configured for precision through-feed grinding of carbide blanks. This application demands exceptional wear resistance and surface finish, achieved through a high-performance diamond grinding wheel manufactured in the UK.
The precision grinding wheel was manufactured by DK Holdings Ltd, a Kent-based manufacturer of precision diamond tooling located in Staplehurst. With a history dating back to 1959, DK Holdings is renowned for designing and manufacturing precision diamond and CBN profile wheels for challenging materials such as tungsten carbide, ceramics, and hardened steels. This bespoke tooling solution helps end users achieve the tight tolerances and consistent, repeatable results needed in carbide tooling production.
The project highlights the strength of the long-standing relationship between the machine supplier and the tooling manufacturer. John Emptage, Sales Director at DK Holdings, commented on the synergy between the two companies:
“RK International Machine Tools and DK Holdings have enjoyed a long partnership over the years and work well together. This project is a great example of mutual support, with RK supplying the precision platform and DK supplying the advanced tooling and abrasives to ensure the customer gets an optimised and completely bespoke grinding solution.”
“The JHC-18S is a well-regarded model in the JAINNHER range, known for its rigidity and precision, making it ideal for both infeed and through-feed operations. The NC1 single-axis configuration provides precise control over the X-axis infeed, allowing for automatic compensation of wheel wear to maintain consistent tolerances and reduce downtime, a crucial feature for high-volume production runs,” comments Simon Rood, General Manager at RK International.
| Description | JAINNHER JHC-18S NC1 |
| Grinding Wheel | 455 x 205mm |
| Regulating Wheel | 255 x 205mm |
| Abrasive | Diamond |
| Workpiece Material | Tungsten Carbide blanks |
| Grinding Method | Through feed |
| NC Controlled | X axis |
| Programmable increment | 0.001mm |
This delivery to a European carbide tooling supplier underscores the capabilities of UK companies and what a strong partnership can achieve. By combining RK International’s expertise in machine tool supply with DK Holdings’ leadership in super abrasive technology, global manufacturers can access high-precision grinding solutions tailored to the most demanding applications.
DK Holdings will be exhibiting at MACH 2026 (20–24 April, NEC Birmingham), where visitors can learn more about its precision diamond and CBN tooling solutions for advanced grinding applications. Visit the company in hall 17, stand 541.
This advanced grinding solution delivers measurable improvements for carbide blank production:
Extended wheel life – The bespoke diamond grinding wheel from DK Holdings maintains its cutting profile significantly longer than conventional abrasives, reducing downtime for dressing and replacement.
Consistent tolerances – The JAINNHER JHC-18S NC1 features automatic X-axis compensation down to 0.001mm, counteracting wheel wear during extended production runs.
Superior surface finish – The combination of a rigid centreless grinder and precision diamond wheel achieves a smooth, defect-free finish on tungsten carbide blanks, reducing secondary polishing operations.
Reduced cycle times – Through-feed grinding at variable rates allows high-volume processing while maintaining quality.
Lower cost per part – Fewer wheel changes, less scrap, and faster throughput directly reduce manufacturing costs for carbide tooling producers.
Get in touch today:
Need an advanced grinding solution for your carbide application?
Contact RK International for a free feasibility assessment.
📞 +44 (0)1322 447611
✉️ sales@rk-int.com
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