Dayton Lamina 9-0808-21 Die Spring Blue Medium-duty

Product Description

The DAYTON LAMINA 9-0808-21 is a medium-duty die spring designed for use in stamping dies, punch presses, and other tooling applications where consistent return force and precise deflection control are required. Built from chromium-vanadium steel, this spring features a D-shaped wire cross-section and a blue color code that identifies its medium-duty load rating. The spring has a 0.5 inch hole diameter, a 9/32 inch rod diameter, and a 2 inch free length. Maximum deflection load is 60 pounds at 0.75 inches of travel. It is installed and maintained by toolmakers, die setters, and press room maintenance technicians.

This die spring is suited for medium-duty tooling and fixturing applications in production stamping, metal forming, and precision die work. The blue color coding follows the ISO 10243 international standard for die spring duty classification, making it straightforward to identify and cross-reference during die maintenance and rebuild operations. Typical installations include stripper plate returns, blank holders, and guided punch assemblies where controlled spring force is needed over a repeatable stroke.

Key Features

• Chromium-vanadium steel construction for durability under cyclic load
• D-shaped wire cross-section for stable seating and consistent deflection behavior
• Blue color code indicates medium-duty rating per ISO 10243
• Maximum deflection load of 60 pounds at 0.75 inches of travel
• 37.5 percent maximum operating deflection rating
• Travel to solid load of 1.06 inches

Compatibility

Designed as an OEM-style replacement or direct-fit die spring for medium-duty stamping die assemblies requiring a 0.5 inch hole diameter and 9/32 inch rod diameter with a 2 inch free length, conforming to ISO 10243 and NAAMS standards.

Installation Notes

Die springs of this type are installed by toolmakers or die maintenance technicians during die build or rebuild procedures. The die and associated press must be fully de-energized and locked out before any spring replacement work begins. Springs should be installed in a guided condition with the rod fully engaged through the spring bore to prevent buckling under load. Do not exceed the rated maximum operating deflection during normal press operation, as over-compression will shorten spring service life.