Clamping rings and lamellar rings
A leading car manufacturer aptly describes one of our specialist products as “no small matter”: PIERON clamping rings. The clamping rings are wound in two layers from spring-hard materials and given a low-burr cut. Thanks to their special cut and leg geometry, the clamping rings ensure a secure hold on our customers’ rubber-metal assemblies. We developed the materials used here together with our material suppliers to offer a robust system with high radial force and high assembly accuracy.
Every year, PIERON reliably supplies more than 300 million rings to the international market – for applications where precision and reliability are crucial.
Specialities
- Clamping rings made of round and flat wire
- Clamping rings with embossed step
- Rings with defined bends
- Low-burr cutting geometry
- Subsequent machining by arrangement
- Special packaging by arrangement
- Short-notice sample production
Applications
- Steering systems in the automotive industry
- Electrical engineering
- Mechanical engineering
Dimensions
- Wire diameter: 0.2 – 8.0 mm
- Outer diameter above 120 mm by arrangement
- All wire profiles possible
Material
- Spring materials and low-strength quality steels
Surface coating
- Commercially coated spring steel wire
- In-house phosphating
- In-house stove enamelling
- Further surface coatings by external service providers
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Clamping rings from Pieron – FAQ
What is a clamping ring?
A clamping ring is a mechanical fastening element that exerts a high radial force or absorbs an axial force for a component that needs to be secured. At Pieron GmbH, clamping rings combine the function of a classic fastener with the advantages of a spring element. Flat-wire clamping rings in particular impress with their double-layer design: the flat material, wound on edge, creates enormous preload that ensures high radial forces on the component to be secured.
What is a lamellar ring?
A lamellar ring is a wound, formed ring made of flat wire with a special design. Unlike standard clamping rings, the lamellar ring is wound with a larger width-to-thickness ratio. Lamellar rings often feature a so-called “step” that allows a secure double layer in the groove. This makes lamellar rings particularly suitable as removable retaining elements in bores. Defined waves or special shapes allow the width of the ring to be adapted to the respective customer application.
How do clamping rings and lamellar rings work?
Thanks to their special design, clamping rings exert uniform pressure on the component. They are typically used to reliably secure bellows – for example on seals, boots or protective elements. Thanks to their compact design and targeted preload, clamping rings offer a space-saving and highly effective solution for a wide range of applications.
Lamellar rings, on the other hand, are installed in bores or grooves. Their special shape – including stepped geometries – allows stable, multi-layer fixing within the groove. Specially shaped ends also make lamellar rings easy to remove, which makes them ideal for reusable or maintenance-intensive applications.
Which materials are used for lamellar and clamping rings?
Pieron manufactures both types of ring from high-quality materials – e.g. carbon steel, patented spring steel wire and NIROSTA steel. On request, additional surface coatings are used to improve corrosion protection, sliding properties and durability – tailored to the respective application.
How is maximum precision achieved with clamping rings?
Whether clamping ring or lamellar ring: both product types require the utmost precision. Exact cuts, minimal burr formation and dimensionally accurate ends ensure that even sensitive components are held securely and not damaged. The tools required for this are developed and built in Pieron’s in-house toolmaking department.
Where are Pieron clamping rings and lamellar rings produced?
Pieron manufactures clamping rings and lamellar rings in its joint ventures worldwide – in Bocholt (Germany), Holland (Ohio, USA) and Taicang (China), as well as through our cooperation in Tumkur (India). This international production network enables “local-to-local sourcing” for our customers, shortens delivery times and guarantees a reliable supply in all major automotive markets.
Where are clamping rings typically used?
Clamping rings are used particularly in automotive engineering – e.g. for securing bellows, seals or protective elements.
Lamellar rings are used when components need to be secured in bores or grooves and removable if required – for example in drive technology or mechanical retaining systems.