Dayton Lamina 9-0810-21 Die Spring 2.5 in Medium-duty Blue

Product Description

The DAYTON LAMINA 9-0810-21 is a medium-duty die spring designed for use in stamping dies, molds, and other precision tooling applications. It features a 0.5-inch hole diameter, a 9/32-inch rod diameter, and a 2.5-inch free length. The spring is manufactured from chromium-vanadium steel and finished in blue to indicate its medium-duty rating. It delivers a maximum deflection load of 60 pounds at a maximum deflection of 0.9400 inches, with a maximum operating deflection of 37.50 percent of free length. The D-shaped wire profile provides stable seating in standard die pockets. Licensed toolmakers and die maintenance technicians are the primary installers of this component.

This die spring is suited for use in punch press tooling, injection mold assemblies, and progressive die sets where consistent, repeatable spring force is required. The medium-duty blue classification follows ISO 10243 color-coding standards, making it straightforward to identify and source replacements during die maintenance. It is appropriate for both production tooling environments and prototype die builds where moderate load and deflection characteristics are needed.

Key Features

• Medium-duty blue die spring per ISO 10243 color classification
• Chromium-vanadium steel construction for fatigue resistance under cyclic loading
• D-shaped wire cross-section for stable seating in standard die pockets
• Maximum deflection load of 60 pounds at 0.9400 inches deflection
• Maximum operating deflection of 37.50 percent of free length
• Compliant with ISO 10243, ISO 9001:2015, and NAAMS standards

Compatibility

Designed as an ISO 10243-compliant replacement die spring for medium-duty tooling applications requiring a 0.5-inch hole diameter and 9/32-inch rod diameter with a 2.5-inch free length.

Installation Notes

Die springs are installed and serviced by toolmakers or die maintenance technicians during die build or scheduled tooling maintenance. Always relieve all press tonnage and lock out the press before accessing die components. Inspect the spring pocket and guide rod for wear or damage before installing a replacement spring. Never compress the spring beyond its rated maximum operating deflection, as over-compression accelerates fatigue and can cause premature failure.