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Grooving loops
Your partner from development to series production
Quality made in Germany
- CNC precision up to ±0.005 mm
- Integrated in-process measuring technology
- Automated feeding & control
- Surface roughness up to Ra 0.3 µm
Automated production
Maximum efficiency thanks to fully automated CNC processes.
Precision parts
Series parts for drive systems and e-mobility.
System provider
Complete solutions thanks to Group expertise.
IATF quality
Certified processes ensure automotive standards.
CNC-controlled plunge-cut grinding for maximum dimensional accuracy and concentricity
As specialists in precision grinding processes, we perform plunge grinding as a type of centerless external cylindrical grinding. In this process, rotationally symmetric workpieces are ground precisely at defined sections—such as shoulders, steps, or transitions. In centerless plunge grinding, the workpiece rests on a support rail. Machining is performed by radial feed of the grinding wheel, while the workpiece remains at a defined axial position.
Our CNC-controlled grinding machines, featuring automatic wheel adjustment and an integrated in-process measurement system, enable reproducible machining with high dimensional accuracy, geometric accuracy, and surface quality—from single parts to series production. This process is particularly well-suited for plunge grinding of rotationally symmetric components when specific diameters, shoulders, and functional surfaces must be machined with precision.
Our CNC-controlled grinding machines, featuring automatic wheel adjustment and an integrated in-process measurement system, enable reproducible machining with high dimensional accuracy, geometric accuracy, and surface quality—from single parts to series production. This process is particularly well-suited for plunge grinding of rotationally symmetric components when specific diameters, shoulders, and functional surfaces must be machined with precision.
Our plunge-cut grinding services
- CNC plunge-cut grinding with diameter tolerances up to ±0.005 mm
- Machining of shoulders, steps, recesses and transitions
- Use of profiled regulating wheels and support rails
- Automated workpiece feeding and positioning
- Process monitoring through integrated measuring technology
- Surface roughness of up to Ra 0.3 µm can be achieved
- Documented quality in accordance with ISO 9001 / IATF 16949
A Comparison of Plunge Grinding and Through-Feed Grinding
Plunge grinding and through-feed grinding are two methods of centerless external cylindrical grinding. While plunge grinding involves machining a defined section of the workpiece at a fixed axial position, through-feed grinding involves the workpiece continuously passing through the grinding gap. As a result, plunge grinding is particularly suitable for components with shoulders, steps, or varying diameters, while through-feed grinding is primarily used for continuously cylindrical geometries.
| Feature | Plunge Grinding | Through-loops |
|---|---|---|
| Workpiece Movement | Defined axial position during machining | Continuous axial flow |
| Process Principle | Radial feed of the grinding wheel | Continuous Machining During Axial Feed |
| Geometry | Steps, landings, and varying diameters | Geometries that are predominantly cylindrical throughout |
| Positioning | Defined axial position | Transport Through the Grinding Gap |
| Typical Application | Offset, rotationally symmetric components | Cylindrical Mass-Produced Parts |
Experience, automation and quality in plunge-cut grinding
We combine decades of experience in the precise grinding of rotationally symmetrical components with state-of-the-art production automation. By using digital control loops, sensor-based process control and closed-loop correction, we consistently maintain dimensional and shape tolerances - even with high quantities.
Our focus is on repeat accuracy, energy efficiency and quality assurance at a metrological level.
Our focus is on repeat accuracy, energy efficiency and quality assurance at a metrological level.
Materials in plunge-cut grinding
We machine a wide range of materials in our grinding shop - from classic steels to high-performance plastics.
Each material requires an adapted grinding wheel bond, cooling lubrication strategy and feed parameters.
Typical materials from our production portfolio:
Each material requires an adapted grinding wheel bond, cooling lubrication strategy and feed parameters.
Typical materials from our production portfolio:
- Tempered and case-hardened steels (e.g. 42CrMo4, 16MnCr5)
- Stainless steel and hardened steels (e.g. 1.4301, 1.3505)
- Aluminum and brass for light shafts and bushings
- Titanium and special alloys for demanding applications
| Material group | Typical application / example | |
|---|---|---|
| Metallized steels | Shafts, coupling pins, bushes | |
| Noble steels | Sensor axles, transmission parts | |
| Aluminum alloys | Lightweight components | |
| Non-ferrous metals | Contact parts, precision sleeves | |
Technology & production: Fully automated grinding processes in plunge-cut grinding
Our sanding technology is based on automated centerless sanding centers with CNC profile control, linear axis guides and digital measuring technology.
The combination of hydrostatic workpiece support, adaptive process control and temperature-stable machine base enables maximum precision, even for long series runs. Intelligent interfaces to CAM systems and MES connections ensure seamless data transparency throughout the entire sanding process.
The combination of hydrostatic workpiece support, adaptive process control and temperature-stable machine base enables maximum precision, even for long series runs. Intelligent interfaces to CAM systems and MES connections ensure seamless data transparency throughout the entire sanding process.
Plunge-cut loops - Industries & applications
Plunge grinding is used in industrial sectors where high dimensional accuracy and geometric precision are required for rotationally symmetric components. Plunge grinding is particularly well-suited for shoulders and steps, as well as for defined cylindrical functional surfaces and transitions. Our manufacturing division supplies components for both series production and special projects, all with documented quality inspections.
Typical applications for plunge grinding:
For centerless plunge grinding of shafts and similar rotationally symmetric components, diameter, roundness, cylindricity, and surface finish are particularly relevant inspection criteria. Depending on the component and drawing, other form and position tolerances—such as concentricity—may also be relevant.
To perform metrological inspections, we utilize, among other things, optical shaft measurement technology, roundness and cylindricity measurement technology, as well as equipment for contour and surface roughness measurement. The measurement results can be documented in accordance with project-specific inspection requirements. This allows the specified dimensional, form, and surface characteristics to be specifically inspected and documented in a traceable manner.
Typical applications for plunge grinding:
- Automotive engineering: valve lifters, pump shafts, transmission pins
- Mechanical engineering: bushings, bolts, guide rollers
- Electrical Engineering: Contact shafts, insulating sleeves
- Hydraulics / Pneumatics: piston rods, sealing surfaces
- Medical Technology: Stainless Steel Shafts, Precision Components
For centerless plunge grinding of shafts and similar rotationally symmetric components, diameter, roundness, cylindricity, and surface finish are particularly relevant inspection criteria. Depending on the component and drawing, other form and position tolerances—such as concentricity—may also be relevant.
To perform metrological inspections, we utilize, among other things, optical shaft measurement technology, roundness and cylindricity measurement technology, as well as equipment for contour and surface roughness measurement. The measurement results can be documented in accordance with project-specific inspection requirements. This allows the specified dimensional, form, and surface characteristics to be specifically inspected and documented in a traceable manner.
Contact us
We look forward to hearing from you. Find out more about the extensive development and production options we can offer you.
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Enno-Heidebroek-Strasse 7 01237 Dresden Germany
Always precise. Always competent. Always solution-oriented.
Become a partner of a European group of companies. Choose Präzisionsteile Dresden and the KAP Precision Components group of companies.
Become a partner of a European group of companies. Choose Präzisionsteile Dresden and the KAP Precision Components group of companies.
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Frequently asked questions on the topic:
Grooving loops
In plunge grinding, part geometry, material, and the required accuracy play a key role in determining the appropriate process design. The following questions provide a concise overview of key technical aspects and help with the initial assessment of a specific grinding task.
Grooving loops
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Präzisionsteile Dresden GmbH
& Co. KG
& Co. KG
Enno-Heidebroek-Strasse 7 01237 Dresden Germany
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