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The ASSOCIATED SPRING RAYMOND 205-405 is a heavy-duty die spring designed for tooling, stamping, and press applications where consistent return force and long cycle life are required. Built from chromium alloy steel with a trapezoidal wire cross-section, this spring delivers a strong duty rating and a maximum deflection load of 362.57 pounds (1612.80 N). The red color coding identifies it as a strong-duty unit per ISO 10243. With a free length of approximately 1.26 inches (32.00 mm) and a maximum deflection of 9.60 mm to solid, it is suited for high-cycle die and mold tooling environments. Installation is typically performed by tool and die makers, press technicians, and maintenance machinists.
This die spring fits applications requiring a 20.00 mm hole diameter and a 10.00 mm rod diameter, making it compatible with standard die sets used in metal stamping, injection mold tooling, and precision fixture applications. The strong duty rating is appropriate where higher spring forces are needed within the same envelope as lighter-duty units. The ISO 10243 designation ensures it meets standard dimensional and performance requirements recognized across tooling industries.
Designed as an OEM-style replacement or direct-fit die spring for standard tooling applications requiring a 20.00 mm hole diameter and 10.00 mm rod diameter per ISO 10243 specifications.
Die springs are installed by tool and die makers or press maintenance technicians. Always de-energize and lock out the press before disassembling the die set. Ensure the spring is seated squarely in the spring pocket with the rod diameter and hole diameter matched to the print dimensions. Do not compress the spring beyond its rated travel-to-solid load during setup or operation.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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