Dayton Lamina 9-4036-21 Die Spring 9 Inch Blue Medium-duty

Product Description

The DAYTON LAMINA 9-4036-21 is a medium-duty die spring engineered for use in stamping dies, punch presses, and precision tooling applications. Built from chromium-vanadium steel with a D-shaped wire cross-section, this spring delivers consistent, repeatable force under cyclic loading conditions. It carries a maximum deflection load of 1,648 pounds at 3.38 inches of maximum deflection, with a travel-to-solid load of 3.98 inches. The blue color coding identifies it as a medium-duty spring per ISO 10243 classifications. Die maintenance technicians and toolroom machinists are the primary installers of this component.

This spring is suited for medium-duty tooling setups in stamping, forming, and die assembly environments - both in production manufacturing facilities and precision job shops. The 2.5-inch hole diameter accommodates standard die set posts, and the 1.5-inch rod diameter fits corresponding guide rods. The 9-inch free length makes it appropriate for die sets requiring moderate stroke travel and a maximum operating deflection of 37.50 percent. Its blue designation provides quick visual identification on the shop floor or at the press.

Key Features

• Chromium-vanadium steel construction for high fatigue resistance under cyclic compression loading
• D-shaped wire cross-section for increased contact surface and load stability
• Maximum deflection load of 1,648 pounds at 3.38 inches of travel
• Blue color coding denotes medium-duty rating per ISO 10243 international standard
• Compliant with ISO 10243, ISO 9001:2015, and NAAMS standards
• Maximum operating deflection of 37.50 percent for controlled stroke applications

Compatibility

Designed as an OEM-style replacement or direct-fit die spring for medium-duty stamping dies and punch press tooling that require a 2.5-inch hole diameter, 1.5-inch rod diameter, and 9-inch free length per ISO 10243 specifications.

Installation Notes

Die springs of this type are installed by toolroom technicians or die maintenance personnel during die assembly or rebuild. The press must be locked out and tagged out per OSHA lockout/tagout procedures before any die disassembly or spring replacement. Verify that the guide rod diameter and die set pocket match the rod and hole dimensions of this spring before installation. Do not compress this spring beyond the rated maximum operating deflection, as over-compression will reduce fatigue life and may cause premature failure.