Grinding Machines

Grinding Machines for Metalworking

A grinding machine uses a rotating grinding wheel to remove fine chips from a workpiece. This produces accurate dimensions, tight tolerances and smooth surfaces that other processes cannot achieve. Grinding is usually the final step and defines the quality of the finished part. Whether for production, a repair shop or a training centre, KNUTH offers a grinding machine for metal that fits the task, from the compact workshop machine to machines for series production.

Types of Grinding Machine

The right type of machine depends on the shape of your workpieces and the surface you need.

• Cylindrical grinders: For round and cylindrical parts such as shafts, pins and bushes. They machine external and internal surfaces to high accuracy, including on longer components. Some series work in a servo-conventional mode with NC-controlled cycles.
• Surface grinders: For flat surfaces with high accuracy and good surface finish. Stable guidance ensures consistent quality even on larger workpieces.
• Tool grinders: For sharpening and re-grinding cutting tools such as milling cutters, drills and reamers. This extends tool life and safeguards process quality. See the Tool Grinders page for details.
• Belt and disc grinders: For deburring, smoothing and bevelling edges and surfaces. Robust workshop machines for daily use, also as a bench grinder. More on the Belt/Disk Sanders page.

Cylindrical and surface grinders are grouped on the Conventional Grinding Machines page.

Key Technical Data When Comparing

A few figures decide whether a grinding machine suits your work:

• Grinding diameter and grinding length: Define the maximum workpiece size on cylindrical grinders.
• Grinding area and table size: Set the workable surface on surface grinders.
• Travels: Define the usable working range of the machine.
• Drive power and speed: Must match the material and the grinding wheel.
• Control: Conventional, servo-conventional with NC cycles, or with Siemens operation.

The KNUTH product pages list these figures for each model, so you can match a machine to your workpieces and floor space before you enquire.

Conventional or NC-Controlled: Which Grinding Machine?

For repairs, one-off parts and training, a conventional grinding machine offers the lowest entry cost and the greatest flexibility. For repeat series and consistent precision, NC-controlled cycles help, for example when dressing the grinding wheel automatically. Many shops use both. If you are unsure, a KNUTH specialist matches the machine to your workpieces, your batch sizes and your operators' experience.

Industrial Applications

Grinding machines are central wherever dimensions and surface finish must be right:

• Precision machining: Tight tolerances and fine surfaces for automotive, mechanical engineering and medical technology.
• Tool and die making: Re-grinding and reconditioning cutting tools.
• Maintenance and repair: Reconditioning shafts, guideways and worn components.
• Deburring and finishing: Clean edges and surfaces before assembly or coating.
• Training: Teaching the fundamentals of grinding in the training workshop.

Why KNUTH

KNUTH has supplied machine tools to metalworkers worldwide since 1923. Our grinding machines are built for daily use in demanding environments, with a focus on long-lasting reliability, easy maintenance and consistent accuracy. Every machine is quality-tested in Germany to ISO 9001. This gives you European quality and compliance without the European price. At our headquarters in Wasbek we keep around 1,000 machines permanently in stock, so many models are available at short notice.

Comprehensive Service: Commissioning, Training, Repair

We support you with the installation and commissioning of your new grinding machine and train your team on its operation. Our technical support and repair service cover every machine category in the KNUTH range. Our well-stocked spare parts warehouse ships most components quickly, including for older machines, keeping your production reliably running. You will find information on installation and start-up and on the repair service on the service pages.

Request a Grinding Machine from KNUTH

Looking for a reliable grinding machine for metalworking? KNUTH covers the full range, from tool grinders and cylindrical and surface grinders to belt and disc grinders. Many models are available at short notice. Request a no-obligation quote on any product page or contact our team. We will help you find the right grinding machine for your shop.

Further Machine Categories at a Glance

Here is an overview of our machine range. Select a category to learn more about individual machines and their technical data.