Dayton Lamina 9-1220-11 Die Spring 5in Light-duty Green

Product Description

The DAYTON LAMINA 9-1220-11 is a light-duty die spring designed for use in stamping dies, molds, and progressive tooling applications. It features a 0.75-inch hole diameter, a 0.375-inch rod diameter, and a 5-inch free length, making it a compact and well-proportioned spring for tooling setups that require controlled, repeatable compression force. Constructed from chromium-vanadium steel with a D-shaped wire profile, this spring delivers a maximum deflection load of 106 pounds at 2.0 inches of travel. The green color designation indicates its light-duty load rating per ISO 10243 standards. It is typically installed by tool and die makers, mold technicians, and maintenance machinists.

This die spring is suited for light-duty stamping and forming operations in both production and maintenance environments. The 40 percent maximum operating deflection rating and a travel-to-solid load of 2.58 inches allow it to handle cyclical compression without premature fatigue when operated within its rated deflection range. It is commonly found in metal stamping dies, injection molds, and fixture assemblies across automotive and general manufacturing industries. Its ISO 10243 compliance and NAAMS conformance make it a viable choice for automotive-tier tooling applications.

Key Features

• Light-duty load rating with a maximum deflection load of 106 pounds
• Chromium-vanadium steel construction for fatigue resistance under cyclic loading
• D-shaped wire profile for consistent spring performance and die alignment
• Green color coding per ISO 10243 for quick load-class identification
• Compliant with ISO 10243, ISO 9001:2015, and NAAMS standards
• Maximum operating deflection of 40 percent of free length

Compatibility

Designed as an ISO 10243 light-duty die spring for use in standard die spring pockets with a 0.75-inch hole diameter and 0.375-inch rod diameter, compatible with stamping dies, progressive dies, and mold assemblies using NAAMS-compliant tooling layouts.

Installation Notes

Die springs are installed by qualified tool and die makers or mold technicians. Before servicing any die or mold assembly, ensure the press or molding machine is locked out and all stored energy is released. Never compress this spring beyond its rated maximum operating deflection of 40 percent, as exceeding this limit accelerates fatigue and can cause premature failure. Inspect for cracking, permanent set, or corrosion at each die service interval and replace springs in matched sets where possible.