Dayton Lamina 9-2028-26 Heavy-duty Die Spring Red

Product Description

The DAYTON LAMINA 9-2028-26 is a heavy-duty die spring designed for use in stamping dies, press tooling, and industrial mold applications. Built from chromium-vanadium steel, it delivers consistent force and long cycle life under repeated compression loads. The spring features a 1-1/4 inch hole diameter, a 5/8 inch rod diameter, and a 7 inch free length. Maximum deflection load is 801 pounds at 2.1 inches of deflection, with a travel-to-solid load of 2.41 inches. The red color coding follows the ISO 10243 standard for heavy-duty classification, making it easy to identify and replace in multi-spring die sets. Installation is typically performed by toolmakers, die setters, and press maintenance technicians.

This spring is suited for high-cycle stamping and forming operations where heavy-duty spring force is required. It fits standard die spring pockets and guide rods in progressive dies, compound dies, and injection mold assemblies. The D-shaped wire cross-section allows for tighter coil packing and higher load capacity relative to round-wire springs of the same envelope size. Compatible with guide rod diameters of 5/8 inch and spring pocket bores of 1-1/4 inch.

Key Features

• Heavy-duty rating with 801 lb maximum deflection load at 2.1 inches
• Chromium-vanadium steel construction for high fatigue resistance and long service life
• D-shaped wire cross-section for higher load density in compact die pockets
• Red color coding per ISO 10243 heavy-duty classification standard
• Maximum operating deflection of 30 percent of free length
• Meets ISO 10243, ISO 9001:2015, and NAAMS standards

Compatibility

Designed for use in standard ISO 10243 and NAAMS-compliant die spring applications with a 1-1/4 inch pocket bore and 5/8 inch guide rod diameter.

Installation Notes

Die springs should be installed by qualified toolmakers or die maintenance personnel with the press locked out and all stored energy released before service. Inspect the spring pocket bore and guide rod for wear or damage before installation. Do not compress the spring beyond its maximum operating deflection of 30 percent of free length during normal operation, as exceeding this limit accelerates fatigue failure. Confirm spring seating and alignment before returning the press to service.