About us

Since 1974, RUKO GmbH PRECISION TOOLS is one of the world's leading manufacturerwe specialize in the production of drilling, countersinking, and cutting tools. The high-quality precision tools from our production facility in Germany provide high-performance tools for the professional user in industry and trade.

We are your reliable partner in the field of metal cutting. Our drive is our fascination.

Products and services

Twist drill, Special drills, Sheet drills, Step drills, Countersink, Machine taps, Hand taps, Thread repair tools, Core drills, Rotary burrs, Hole saws, Saws, Deburring program, Screw hole punches, Core drilling machines, Coolants and lubricants, Concrete drills, Wood drills.

Taper and deburring countersinkers

Applicable for steel, cast iron, non-ferrous and light metals. Best results at low cutting speeds. The ideal tool for countersinking and deburring in the following sectors of industry: electrical, sanitary engineering, heating technics, mechanical engineering, switching systems, tubular steel construction, furniture and wood working, automotive and aviation.

RUKO Twist drills

Versions according to DIN standards: Twist drills in accordance with all usual DIN standards. Geometry, point angles and shaft shapes for every application and specific machining task.

Material qualities and coatings: Our product range includes material qualities from HSS steel to high-quality cobalt alloys and carbide metal.
Different coatings are available for a finer match to the material to be machined.

Further reading

Step drills

The flutes of RUKO high performance step drills are CBN ground from the solid hardened form. Because CBN (cubical boron nitride) is a much harder abrasive than even silicium carbide or corundum, a better and sharper cutting edge is achieved - without burrs. And, with higher dimensional precision the drills will last considerably longer while maintaining the precise process tolerances.

Robert-Bosch-Str. 9 – 11
71088 Holzgerlingen

Phone: +49 7031 6800-0
Fax: +49 7031 6800-66
Internet: www.ruko.de
E-mail: Send message

Contact person

Norbert Knoll
Export Sales Director
Phone: +49 7031 6800-37
E-mail: Send message

News & Innovations

New Managing Director at RUKO

Today, Ali Dalgic takes over the management of the RUKO Group.

After studying mechanical engineering at RWTH Aachen University, Ali Dalgic worked for various companies in the automotive and commercial vehicle industry as well as the metal cutting industry in management positions, including managing director in an international environment. Most recently, as the Chief Executive Officer (CEO), the graduate engineer held the entire entrepreneurial responsibility for the Swiss subsidiary of a leading international machine tool manufacturer.

Ali Dalgic has a clear vision for RUKO: "We will focus on our entire value added chain and the structure of our sales force even more towards satisfying our customers needs. In the future, RUKO will open up additional sales channels and expand business internationally - a challenge that I am very much looking forward to."

New RUKO website is online!

The new online tools

With the Product finder you get a handy instrument, which helps you to easily find the right tool via different filter possibilities. The filter options are divided into two areas:
- Application areas
- Technical data

For example, if you want to drill a hole in bronze, select in the product group Twist Drills under application areas Bronze. Filtering technical data, you have the possibility to filter according to material, coating, groove profile, etc.

Add products to the tagged list and compare them with each other. You can run the Product Comparison via your tagged list. You can even save the list with the tagged products as PDF.

If you are not yet familiar with materials, surfaces, etc., you will get in our Blog tips, tricks, and knowledge about metal cutting.

Unter Downloads you will find our current catalogues, brochures, and manuals. They can be downloaded, forwarded, or browsed directly online in different languages as PDFs. Here you will also find numerous information about the products.

On the Retailer page you will find specialized RUKO retailer in your area. Enter zip code, city, or exact address and select your desired radius. You will then see in the map all retailers who carry RUKO products.

We are there for you personally and online. Under Service we support you in the selection of the correct tool, advise you in the proper handling, and provide a repair service for your Core drilling machine. Please use the contact form on the page.

Further reading
Taper and deburring countersinker

The newly developed cutting geometry of the ULTIMATECUT enormously reduces the axial and radial forces, which are affecting the tool during the countersinking. The variably running relief grinding was specially developed and ensures a very quiet countersinking procedure and a perfect surface quality, which guarantees the best results. (The new RUnaTEC coating further increases performance). The specially developed flute parameters,
such as the angle, the transition radius as well as the extra-wide chip flute, ensure an optimal chip and heat removal and therefore enable a high wear resistance. 

Furthermore, the new geometry prevents material welding and reduces the countersinking force. Considerably less feed power while countersinking is now necessary. The materials can be handled either with a very high as well as with a very low cutting speed, without loss of quality/loosing quality concerning the result. 

The ULTIMATECUT achieves the best performance in mostly all applications and materials.

- achieves the best performance in almost all materials and applications
- considerably less feed force required
- up to 60% longer service life
- up to 30% faster countersinking
- extremely quiet running
- optimal and smooth surface
- perfect chip removal

Further reading

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