Double Ring

A double ring is a prestressing tool made of two hardened steel rings that are assembled by press fitting. A double ring is about 40% stronger than a 1-ring system but is approx. half as strong as a stripwound container. The stiffness is comparable with the SC 200 container as the ring is made of tool steel. Specific calculations are required in each case.

The purpose of a double ring is the same as a stripwound container and can in general be applied for both cold, warm, and hot working applications. A double ring is cheaper than a stripwound container, but it is at the expense of reduced strength capability, and consequently a shorter service life of both the forming die and the double ring itself. Minimum diameter of a double ring can be approx. ø50 mm. 

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Double Ring is a compression ring for radial prestressing of dies
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STRECON Prestressing Tool System H-Type for horizontal presses

PTS - Prestressing Tool System / H-Type

STRECON Prestressing Tool System V-Type for vertical press machines

PTS - Prestressing Tool System / V-Type

STRECON stripwound containers SC 200 and SC 400 for radial prestressing

SC 200 / SC 400

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STRECON SC AXI-FIT stripwound container system for radial and axial prestressing of forming dies for cold and warm forming applications


Prestressing tool solution designed specifically for a customer's press equipment

Customized Tool Solutions

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