Dayton Lamina 9-1008-21 Die Spring Blue Medium-duty

Product Description

The DAYTON LAMINA 9-1008-21 is a medium-duty die spring designed for use in stamping dies, press tooling, and precision metal-forming applications. It features a 0.625-inch hole diameter, an 11/32-inch rod diameter, and a 2-inch free length. Constructed from chromium-vanadium steel, the spring delivers a maximum deflection load of 116 pounds at 0.75 inches of travel. The D-shaped wire profile provides consistent lateral stability under cyclic compressive loads. This spring is color-coded blue per ISO 10243 standards, making it easy to identify duty rating at a glance during toolroom maintenance or die setup.

This die spring is suited for medium-duty tooling applications in stamping, forming, and progressive die assemblies found in automotive, industrial, and general manufacturing environments. It is installed by toolmakers, die setters, and maintenance technicians working on punch presses and metal stamping equipment. The 2-inch free length and 0.75-inch maximum deflection make it a practical choice for moderate-stroke applications where controlled spring-back force is required. Maximum operating deflection is rated at 37.50 percent of free length.

Key Features

• Chromium-vanadium steel construction for durability under repeated compression cycles
• D-shaped wire profile maintains lateral stability inside die assemblies
• Blue color coding identifies medium-duty rating per ISO 10243
• 116-pound maximum deflection load at 0.75 inches of travel
• Travel to solid load of 0.98 inches provides a defined solid-height reference
• Meets ISO 10243, ISO 9001:2015, and NAAMS standards

Compatibility

Designed as a standard ISO 10243 medium-duty die spring for use in tooling applications requiring a 0.625-inch hole diameter and 11/32-inch rod diameter fit.

Installation Notes

Die springs are installed by qualified toolmakers or die maintenance technicians. Always relieve all press pressure and de-energize the machine before accessing die components. Ensure the spring seats flush against both the pocket and retainer surfaces with no lateral bind. Do not exceed the rated maximum operating deflection of 37.50 percent during normal cycling to avoid premature fatigue failure.