Die Spring
 | Die springs are especially made for use where high load is required in a confined space. The high demand place upon these springs is a result of the high frequencies with which the dies are charged. The use of the frequencies with which the dies are charged.
TEVEMA delivers as well as Americal Duty springs as ISO Duty springs
American duty springs are made of very high quality chromium vanadium steel (50CrV4/DIN 17225 /SAE 6150). Because of her oval wire profile a maximum of force and a maximum lifecycle can be achieved. Because of that is the life cycle of American die springs higher than the ISO die springs. Moreover, the american die springs is for this reason more expensive than the normal ISO spring.
American Die springs are marked by colour codes as follows:
- light duty: blue - medium duty: red - heavy duty: yellow / copper - extra heavy duty: green
The length L1 can be used at a frequency of 1000 cycles per hour. For calculating the tension at a certain loaded length, the amount of millimetres of compression has to be multiplied by the force rate of the spring.
Workingtemperature: max. 200 grades celcius.
In case of higher frequencies, percentages are applicable as follows:
- blue springs: 25-30% of free length - red springs: 20-25% of free length - yellow springs: 15-20% of free length - green springs: 15% of free length
The tolerances at loaded length are as follows:
0 - 60 mm 2,5 mm 61 - 105 mm 3,5 mm 106 - 200 mm 5,0 mm 201 - 250 mm 6,5 mm 251 - 305 mm 10 mm
ISO die springs
The ISO die springs are made according ISO 10243. They are made of Chromium Vanadium steel of a high tensile strenght. The ends are squared and grounded. Other materials for special conditions are on request deliverable. Please contact our department engineering.
The workingtemperature is till 230 grades celcius.
The color codes of ISO die springs are as follows:
- light duty: green - medium duty: blue - heavy duty: red - extra heavy duty: yellow
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