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External grinding

Precise external grinding for complex components

SUSA S. Sauer GmbH & Co. KG & Co KG offers you precise external grinding for your individual requirements. You can rely on our many years of experience and state-of-the-art technology for maximum precision
  • More than 30 years of experience in the field: External grinding
  • 200 qualified and experienced specialists
  • Machine park of more than 100 systems
  • 14,000 square meters of production space
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To our machinery

Professional external grinding with state-of-the-art technology

External grinding is an important technique when it comes to machining turned parts and other components that require maximum precision. We focus on precise external grinding for complex components. Regardless of whether you need small or large series - we offer high-precision external grinding for a wide range of applications.

Our professional external grinding with state-of-the-art technology ensures that your turned parts and axles meet the exact specifications required. It is important to us to always use exact external grinding processes for individual customer requirements in order to guarantee you the best possible quality. Our processes are designed to ensure maximum precision in every production run.
External grinding
High-precision external grinding for dimensionally accurate parts in small and large series
External grinding is ideal for industrial applications with the highest tolerances in particular, as it enables perfect surface quality and maximum dimensional accuracy. This is particularly crucial when it comes to turned parts that are used in demanding areas. Thanks to our modern machines, we can offer industrial external grinding for dimensionally accurate turned parts in both small and large series.

Whether simple or complex components, you will always receive precise results from us. We rely on the external grinding of metal parts to ensure that every tolerance is precisely adhered to. Our experience in machining turned parts and axles makes us a reliable partner for your project.

You can rely on our expertise and our modern machines when it comes to external grinding. We manufacture your turned parts according to your specifications and ensure that you benefit from maximum precision. Whether you need small quantities or large quantities - we are there for you and offer you high-precision external grinding for your individual requirements.
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Our service: External grinding

External grinding plays a central role in the production of SUSA S. Sauer GmbH & Co. KG. We supply customers from various industries with our wide range of turned parts, whereby precision and quality are our top priorities. Our team of 190 qualified specialists in Heidenau near Dresden works on a production area of around 14,000 square meters and uses state-of-the-art machines and processes to meet even the most demanding requirements of our customers. External grinding is a key element in production that guarantees maximum dimensional accuracy and surface quality.
Quality and precision from SUSA S. Sauer GmbH & Co. KG
Precision is our passion, and this is particularly evident in our external grinding. Whether it's complex workpieces or simple designs, you can rely on on-time order processing and smooth production processes. Our high degree of automation enables us to guarantee short production times and efficient processing. In the field of external grinding in particular, we rely on state-of-the-art technology to deliver perfect results - whether for turned parts, axles or cylindrical workpieces.

We manufacture turned parts in all shapes and sizes according to your specifications and wishes. Whether short or longer parts, with knurls, threads or milling - our external grinding ensures that your components achieve the highest dimensional accuracy and surface quality. We carry out in-process inspections and use sophisticated measuring technology to ensure the quality of our products.

Reliability, good service and close personal contact are the basis of our cooperation. Should a problem arise, we will work with you to find a solution. With our certified quality management in accordance with ISO 9001:2015 and IATF 16949:2016, we always guarantee you flawless and precise results - especially in the field of external grinding.
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External grinding

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Frequently asked questions on the subject: External grinding

What are the most important process parameters for external grinding?

The most important process parameters for external grinding are

  • Cutting speed (Vc): Dependent on grinding wheel material and material
  • Infeed (ae): Determines the removal rate and influences the surface quality
  • Feed rate (Vf): Influences the processing time and temperature development
  • Grinding wheel hardness and grit type: Determines the service life and material removal rate
  • Coolant supply: Reduces heat development and minimizes thermal damage

Why is a special grinding wheel required for external grinding?

For external grinding, the grinding wheels must be adapted to the respective material in order to minimize wear and achieve the desired surface quality. There are different grinding wheels for:

  • Hard metals: CBN or diamond grinding wheels
  • Steel & stainless steel: corundum or silicon carbide grinding wheels
  • Soft materials: Open grain structure for better chip removal

How is concentricity ensured during external grinding?

The concentricity is ensured by various measures:

  • Precise clamping technology: Use of centers or chucks with minimal concentricity error
  • Balancing the grinding wheel: Reduces vibrations and improves dimensional accuracy
  • Correct machine adjustment: Checking guideways and axis movements
  • Process monitoring: Use of measuring systems for permanent quality control

What are the advantages of external grinding compared to turning or milling?

External grinding has some specific advantages over other machining processes:

  • Higher dimensional accuracy: Achieves tolerances in the range of a few micrometers
  • Better surface quality: Ra values down to the range of 0.1 µm possible
  • Machining of hardened materials: Ideal for hardened steel and carbides
  • Low thermal load: Reduces material changes and crack formation

What are the challenges of external grinding of hardened materials?

Various challenges arise when grinding hardened materials:

  • Grinding burn: Surface cracks occur due to excessive thermal stress
  • High tool wear: Especially with hard materials such as hardened steel or carbide
  • Chip removal: There is a risk of clogging of the grinding wheel with fine grinding chips
  • Need for special grinding oils: Cooling lubricants with a high lubricating effect are required

Certifications & quality standards

Quality at every stage of production

We guarantee our customers first-class products and absolute precision. Customer requirements guide our actions and our decisions. We do a lot to achieve this:

  • in-process inspections by qualified employees
  • Use of highly developed measuring technology, e.g. 3D measuring machines, contour measuring devices, profile scanners, form measuring machines
  • 100% inspection of high-volume parts for freedom from chips and important dimensions such as length, inner and outer diameter

Our ISO certification ensures the consistently high standard of our quality management. We work in accordance with DIN EN ISO 9001:2015 and IATF 16949:2016. We have been certified in accordance with the environmental standard DIN EN ISO 14001 and the energy standard DIN EN ISO 50001 since 2018.

External grinding for many sectors

Mining
Mechanical and plant engineering
Hydraulics industry
Plastics industry
High-voltage construction
Fittings industry
Bicycle industry
Communications engineering
Microelectronics
Electrical industry
Automotive

Our machinery

CNC-controlled single-spindle automatic lathes

  • Automatic turret lathes (from 1,000 pieces - Ø20-65 from bar, up to Ø140 from saw blade, blank)
    Index: ABC, G 200, C 100, C 200 (partly with Y-/B-axis / eccentric turning / handling)
    Muratec: MT-12 GMC (with handling), MT200G/T2 and T3, MW 40, MW 50, MW 120, ML 400 (with handling, Y-axes)
    Takamaz: X-100, X-12 MC (with handling)

  • Sliding headstock automatic lathes (from 1,000 pieces - Ø4-32)
    Citizen: C16, L20, M16, M32
    Tornos: Deco 2000 (up to Ø 13/20/26), Deco Sigma (up to Ø 20/32), EvoDeco (up to Ø 32)
    Hanwha: XD16H, XD26H-S

CNC-controlled multi-spindle automatic lathes (from 25,000 pieces - Ø4-52)

  • Tornos: 6- and 8-spindle machines: MultiDeco 20.8b, MultiSigma 8x24, MultiSwiss 6x14, MultiSwiss 8x26

  • Index: 6- and 8-spindle machines: MS 32 C with robot, MS 22-8 C, MS 40 /6 and /8, MS 40 C with robot

CNC-controlled rotary transfer machines

  • Pfiffner: Hydromats HB 45/12 CNC, HB 32/16 CNC, HC 32-16 EPICplus

Cam-controlled six-spindle automatic lathes (from 50,000 pieces - Ø4-17)

  • Tornos: SAS 16.6

Other machines

  • CNC grinding machines (Studer: Favorit, S31, S33; Mikrosa: Kronos S 125, Kronos S 250, Kronos M 250, SR5, Profiltec)
  • Mass finishing systems
  • Sandblasting machines
  • Broaching machines
  • Thread rolling machine
  • Honing machines from Sunnen
  • Worm milling machine and roller burnishing machine (Monnier & Zahner)
  • CNC tool grinding machines for the production of forming tools/cutting plates
  • Optical measuring and sorting systems
  • Parts cleaning systems
  • Fully automatic system for chip removal and disposal
  • CNC-controlled milling center (from 100 pieces - Ø 500 max. clamping surface)
    Mori Seiki: NMV 5000 DCG
SUSA S. Sauer GmbH & Co. KG
Hauptstraße 74 01809 Heidenau Germany
+49-3529-50106-0
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