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Tim Reiber

tim.reiber@reiber.de

Managing Director

Andreas Geßner

andreas.gessner@reiber.de

Authorized Officer
Commercial Manager

Oliver Schmidl

oliver.schmidl@reiber.de

Technical management

Alexander Michalke

alexander.michalke@reiber.de

Order processing

Armin Schmidt

armin.schmidt@reiber.de

Quality control

Compression springs

Customized design of compression springs for a wide range of applications.

Customized compression springs: Precision for every application

Compression springs are used in valves, control systems and switches, for example. They are indispensable in mechanical and vehicle engineering, the hydraulics industry and measurement and control technology.

We design compression springs individually for a wide range of applications in terms of load and deflection, relaxation and fatigue behavior and stress levels. Depending on the respective application, we vary the materials, wire diameter, spring length, shape and pitch as well as the surface finish.

Compression springs are capable of carrying highest dynamic loads and thermal stress thanks to shot peening, heat treatment and setting. Our springs go through a multilevel quality control which include tests regarding length, load and angle. This guarantees lowest tolerances (< quality grade 1 according to DIN EN 15800).

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Your advantages at a glance:

  • Tight winding ratios
  • Angle accuracy according to your requirements
  • Low relaxation loss
  • Automatically chamfered inside and outside
  • Optimally blasted
  • Low residual dirt

If you have individual requirements for compression springs, please contact us with drawings, samples or ideas.

We will support you in the development, design and implementation of your components - from individual items to small and large series.

One of our specialties is small winding ratios for compression springs. This allows the design of components to be reduced while at the same time increasing force transmission.

Technical details

Our compression springs meet quality grades 1 and 2 in accordance with DIN EN 15800.

Material

  • Patented drawn (EN 10270-1), oil tempered (EN 10270-2), stainless spring steel wire (EN 10270-3)
  • Special materials: e.g. Hastelloy, Nimonic etc.
  • Wire diameter: 0.2 to 12.0 mm

Further information on our materials

Spring shapes

  • Cylindrical
  • Conical / conical
  • Double conical
  • Barrel-shaped

Spring ends

  • Multiple end and/or middle turns
  • Created
  • Retracted
  • With pitch
  • Unground
  • Ground
  • Vibratory ground
  • Chamfered inside or outside

Surface treatment

  • Shot peening
  • Galvanizing
  • Delta Tone / Delta Seal
  • Others on request

Production processes

Our materials are carefully selected to ensure maximum durability, elasticity and corrosion resistance.

Coiling

The spring wire is wound through a cold coiling process. It is pushed forward to coiling pins, which, in accordance with their settings and positions, define the spring's outer diameter. Meanwhile the pitch (distance between successive coils) is formed by the pitch wedge, a guiding mechanism. Finally, the wire is cut in the predefined length.

Heat treatment

Coiling creates stress within the material. To relieve this stress and allow the steel to maintain its characteristic resilience, springs must be tempered by heat treatment. Depending on spring shape and material we use different ovens to achieve the best possible product quality.

Setting

When material is subjected to stress above its elastic limit, the spring can be deformed plastically without getting back to the initial length after being released. This leads to a decrease in strength. To permanently fix the desired length and pitch of the spring, it is compressed over a defined period of time. This helps to avoid loss of length and strength when the spring is exposed to stress above its elastic limit in later operation.

Grinding

Compression spring ends must be on axis with adjacent parts to ensure optimum power transmission. Ground ends and closed coils as ends (i.e. reduced end coils' pitch) provide greater contact area in right angle to spring axis.

We use different grinding machines for varying spring shapes and wire diameters.

Shot peening

This surface treatment strengthens springs, especially dynamically stressed compression springs, to resist metal fatigue and cracking in order to significantly extend lifetime. To achieve an extra high surface finish, we use different shot peening facilities. They not only compress the steel but also deburr compression springs.

Do you have any questions or would you like to learn more about our products?

Our team is happy to assist you with a non-binding consultation.

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