Medium load compression springs R21 - ISO 10243 round wire
The R21 round wire medium load compression springs are use in press tools to hold the sheet during the lowering phase.
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Specifications
Material : Chrome Vanadium Silicon steels
Standard : NF ISO 10243
Dimensions :
- Diameter : from 10 to 16mm
- Length from 25 to 305mm
Working load :
Depending on the length and the diameter :
- Recommended working load for long life at 25% of the length : 6,8 DaN to 20,6 DaN
- Recommended working load for medium life at 30% of the length : 8,2 DaN to 25,4 DaN
- Maximum working load at 35% of the length : 10,3 DaN to 31,8 DaN
Lifetime : Up to 2 million press hits depending on use
Preload : 20% of the working load
Operating temperature : -200 °C to +250 °C
Wire diameter : From 2,5mm to 4mm
Benefits :
- Easy to install
- Versatile application
Tolerance : ±1% of the length
Conception :
- Winding the wire
- Degassing
- End grinding
- Degreasing
- Painting
Recommendation for use :
Mounting : The spring is individually fitted between the stripper plate and the top plate thanks to retaining screw, guiding shafts or retainer.
Use conditions : Do not exceed the maximum loads to guarantee the lifetime of the springs. The springs have to be preloaded in the tools. When assembling the tool, there is no need to preload them, as in the rest position the stripper plate is not under spring pressure.
To order you need to indicate :
- The diameter
- The lenght
Example : R21.012.032
Technical data
Plan
d : Internal diameter
D : External diameter
Lo : Length
![Medium load compression springs R21 - ISO 10243 round wire drawing These wire compression springs, according to the ISO 10243 standard, from the range, standardized components for the construction of press tools from the MDL brand, are available in stock, from the manufacturer AMDL.](/_next/image?url=https%3A%2F%2Fapi.amdl-eu.com%2Fuploads%2Fmedia%2Fmedium-load-compression-springs-r21-iso-10243-round-wire-plan.png&w=1080&q=75)