Dayton Lamina 9-1012-21 Die Spring 3 in Medium-duty Blue

Product Description

The DAYTON LAMINA 9-1012-21 is a medium-duty die spring engineered for use in stamping dies, press tooling, and precision industrial fixtures. Built from chromium-vanadium steel, it delivers consistent load performance across repeated compression cycles. The spring features a 5/8-inch hole diameter, an 11/32-inch rod diameter, and a 3-inch free length. At maximum deflection of 1.12 inches, it handles a load of 113 pounds. The D-shaped wire profile resists rotation within the die pocket and helps maintain alignment under load. This part is sold and packaged individually and weighs 0.057 pounds.

This die spring is suited for use in metal stamping dies, injection mold tooling, punch press assemblies, and similar precision fabrication equipment. The blue color designation indicates medium-duty classification under ISO 10243 standards, making it straightforward to identify and replace during tooling maintenance. It is typically installed and serviced by tool-and-die makers, mold technicians, and industrial maintenance professionals working in manufacturing environments.

Key Features

• Medium-duty classification with a maximum deflection load of 113 pounds
• Chromium-vanadium steel construction for fatigue resistance and long service life
• 5/8-inch hole diameter and 11/32-inch rod diameter for precise die pocket fit
• D-shaped wire profile resists rotation and maintains positional alignment
• 3-inch free length with 1.12-inch maximum deflection (37.5 percent maximum operating deflection)
• Travel to solid load of 1.51 inches provides a defined compression limit

Compatibility

Designed as an ISO 10243-compliant medium-duty die spring for use in standard stamping die and press tooling applications requiring a 5/8-inch hole diameter and 11/32-inch rod diameter.

Installation Notes

Die springs are installed by qualified tool-and-die or maintenance personnel. Always de-energize and lock out the press before servicing tooling components. Verify that the spring pocket depth and rod clearance match the specified hole and rod diameters before installation. Do not compress the spring beyond the rated maximum deflection to avoid permanent set or premature failure.