We produce high-quality metal rings on your behalf

The GIANT RING CUTTER: Perfect separation of large rings with the highest precision and minimal effort.

PTZ Weidner – efficient. precise. material-efficient.

The right partner for many industries

Our separation process is ideal for demanding applications in fields such as mechanical engineering, aerospace, wind energy, chemical and plant engineering, offshore, tank construction, shipbuilding, commercial vehicles and steelworks equipment.

Customers & Industries:

foundry

blacksmithing business

Rolling mill

Pipe manufacturer

Metal & steel manufacturers

Technology

THE GIANT RING CUTTER

The GIANT RING CUTTER: Perfect separation of large rings with the highest precision and minimal effort.

Finishing

Everything from one source

From sourcing the blanks and separating them to further and final processing, you get everything from one source.

Learn more

Always one cut ahead with us!

Get in touch now and discuss the project – we’re ready.

Contact

Finising

PTZ WEIDNER takes over the entire manufacturing process of metal rings

From sourcing the blanks to efficient and resource-saving separation at the GIANT RING CUTTER, to further and final processing, you get everything from one source. The GIANT RING CUTTER in combination with precision turning and milling machines allows us to process the generated rings seamlessly until the final product is finished.

All services from
a hand

of the highest quality (demonstrated by acceptance protocols)

Efficient and resource-saving separation

Do you have any further questions?
We provide answers

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In which industries are our rings used and for what purpose?
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Industries:

  • Mechanical Engineering

  • Mining

  • Armor

  • Aerospace

  • Wind turbine construction

  • Chemical and plant engineering

  • Offshore technology

  • Commercial vehicle construction

  • Shipbuilding

  • Electric motor construction

  • Medical Technology

  • Hydrogen plants (e.g. B. Electrolyzers)

Uses (rings as):

  • flanges

  • Print rings

  • Cell rings

  • Sealing rings

  • Turbine rings

  • Setting rings

  • Bearing rings

  • rotating rings

  • Short-circuit rings

  • Gears

What are the benefits for our customers?
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Cost benefits:

  • Less usable material

  • Lower energy consumption

  • Lower tooling, setup and machining costs

  • Faster manufacturing times

Quality advantages:

  • Deformation-free rings

  • High plan level

  • Very good surface quality

Additional services (on request):

  • Material procurement including factory certificate/TÜV

  • Optimization of components

  • Wage race of individual rings

  • Pre- and final processing according to drawing

  • Heat treatment and finishing

  • Organization of transports

What dimensions can we separate? (Outer diameter, inner diameter, height, wall thickness)
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Example dimensions:

  • Outer diameter: up to 3,500 mm, larger after consultation

  • Smallest inner diameter: 150 mm

  • Wall thickness: up to 430 mm

  • Height (separate ring height): minimum 3 mm, maximum after consultation

How precise are the cutting edges?
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  • Plan flatness: up to 0.1 mm

  • Temperature during separation: approx. 25 °C → cold, deformation-free method

  • Special accuracy in surface quality: e.g. B. 1.293 Ra

  • The separation cuts are so precise that direct further processing or end use is possible.

How wide is the separation gap?
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The separation gap is 3 mm to 4.5 mm, depending on the wall thickness.

What services / special solutions do we offer?
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  • Material procurement, also with factory certificate and TÜV inspection

  • Optimization of components

  • Wage race of single rings

  • Pre- and final processing according to drawing

  • Heat treatment

  • Refinement of the rings

  • Transport organization

  • Traceability by restamping permission until the finished ring

  • Precision separation technology also for Hydrogen applications with the highest requirements

  • Machining of a wide variety of materials, including nickel-based, titanium, aluminum, stainless steels, duplex, etc.