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Schnorr Disc Springs

Disc Spring Engineering
Maximum load - minimum space - maximum flexibility

CLASSIFICATION BY GROUP

The large dimensional range in which disc springs are made requires very different production methods. The methods employed range from simple stamping and stamping with extra machining to hot forged and rolled rings, which are turned or ground to obtain their final shape. 

DIN 2093 specifies 3 manufacturing groups:                                                   

Group 1: Thickness t less than 1.25mm
Group 2: Thickness t from 1.25 to 6mm
Group 3: Thickness t more than 6 to 14mm

For these groups the following manufacturing methods are specified:

Group 1:  Stamped/Cold formed/Corners rounded

Group 2:  Stamped/Cold formed/De and Di turned/Corners radiused

Group 3:  Cold or hot formed/Machined all over/Corners radiused/With contact flats and reduced thickness

All disc springs as per DIN 2093 and our factory standards are made to these requirements. Special sizes are also assigned to the appropriate group if  production is possible or no other production method has been agreed upon.

The manufacturing process is shown schematically for the three groups in figure 27 below.

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