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ORIGINAL SCHNORR

DISC SPRINGS

 

QUICK FAQS

Disc springs support a plethora of dynamic processes in a skillful, safe and efficient way – often under extreme force and load conditions.

  • Linear or progressive load deflection characteristic.

  • Long and predictable service life with dynamic load.

  • Manufactured to DIN 16983 & DIN 16984

 

FEATURES

  • Efficient use of space providing high spring loads.

  • Can be combined in series or parallel configurations to customize load-deflection characteristics.

  • Largely self-dampening.

  • Presetting results in no setting under static loads

APPLICATIONS

 
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The conical shape allows springs to be combined in different ways.

Possible spring combinations:

  • For series stacks, the deflections are additive at the same force (b).

  • For parallel stacks, the forces are additive at the same deflection (c).

  • For combination of series and parallel stacking, various characteristic curves can be realized (d).

DISC SPRING STACKS

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  • A guide element is needed to prevent lateral movement.

  • Inside guidance on a bolt or shaft is preferred, although outside guidance is acceptable as well.

  • The guide elements and abutments should be hardened to a minimum of 60 HRC (minimum case depth of 0.8 mm), if possible.

  • The surface of the guide element should be smooth and, if possible, ground down.

  • For static applications, guides can be unhardened.

DISC SPRING STACKS

 

MATERIALS

MATERIALS

Carbon Steel

C67S (1.1231)
C75S (1.1248) 

per DIN EN 10132-4

Used as cold rolled strip for group 1 disc springs;

thickness of < 1.25 mm

Alloyed steel is used in rolled condition.

For thickness: > 1.25mm

Chrome Vanadium

51CrV4 (1.8159)

per DIN EN 10151

Chromium-molybdenum-vanadium steel effective for temperatures

up to 500 C

Not corrosion resistant.

Heat Resistant

Stainless Steels

X22 CrMoV 12-1(1.4401)

per DIN EN 10269 or 10088-2

X10:  Chromium-nickel alloyed steel for springs;

thickness < 3.0 mm.

X7:  A precipitation-hardened steel.

*magnetic*

Corrosion Resistant Steels

X10 CrNi 18-8 (1.4310) 

X7 CrNiAl 17-7 (1.4568) 

per DIN EN 10151

Excellent corrosion resistance & high temperature applications

(up to 600 C)

Inconel

X718 (2.4668)

X750 (2.4669)

Material & Surfaces

 

TOLERANCES

OVERALL HEIGHT

THICKNESS

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LOAD

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DIAMETER

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STANDARDS

 

Disc springs are manufactured to the following standards: 

  • DIN EN 16983 – Quality requirements, Dimensions

  • ​DIN EN 16984 – Calculation

(Formerly DIN 2092- Calculation of Disc Springs and DIN 2093  -Quality requirements, Dimensions)