Dayton Lamina 9-0805-21 Die Spring 1.25 in Medium-duty Blue

Product Description

The DAYTON LAMINA 9-0805-21 is a medium-duty die spring designed for use in stamping dies, punch presses, and precision tooling fixtures. Built from chromium-vanadium steel with a D-shaped wire cross-section, it delivers consistent, repeatable force across its compression cycle. The spring features a 0.5-inch hole diameter, a 9/32-inch rod diameter, and a free length of 1.25 inches. Maximum deflection load reaches 61.00 pounds at 0.4700 inches of travel, with a maximum operating deflection of 37.50 percent. The blue color coding identifies it as a medium-duty classification per international die spring standards. This part is installed by tool and die makers, stamping technicians, and precision machining professionals.

This die spring is suited for medium-duty tooling applications in stamping, forming, and metal fabrication environments. Its compact free length of 1.25 inches makes it appropriate for installations where space inside the die set is limited. The D-shaped wire profile maximizes the number of active coils within a given outer diameter, contributing to stable load characteristics throughout the deflection range. It is a direct-fit option for tooling designs specifying a 0.5-inch hole diameter and 9/32-inch rod diameter with medium-duty spring force requirements.

Key Features

• Chromium-vanadium steel construction for durability under repeated cycling
• D-shaped wire cross-section maximizes coil density within the outer diameter
• Blue color coding identifies medium-duty load classification at a glance
• 61.00-pound maximum deflection load at 0.4700 inches of travel
• 37.50 percent maximum operating deflection rating
• Travel to solid of 0.6300 inches provides a defined compression limit

Compatibility

Designed as an OEM-style replacement or direct specification die spring for tooling assemblies requiring a 0.5-inch hole diameter, 9/32-inch rod diameter, and 1.25-inch free length in a medium-duty blue classification.

Installation Notes

Die springs are installed by qualified tool and die makers or stamping technicians during die build or maintenance. Always relieve all press load and lock out or tag out the press before removing or replacing die springs. Inspect the mating rod and hole dimensions for wear before installation, as misalignment or oversized clearances accelerate fatigue. Do not compress the spring beyond its rated travel-to-solid dimension during setup or operation.