Associated Spring Raymond 103-640 Die Spring Blue

Product Description

The ASSOCIATED SPRING RAYMOND 103-640 is a blue-coded heavy-duty die spring designed for use in stamping dies, presses, and tooling fixtures. It features a 1-1/4 inch hole diameter, a 5/8 inch rod diameter, and a 10 inch free length. The trapezoidal wire cross-section maximizes load capacity within the spring envelope compared to round wire designs. Constructed from chromium alloy steel, this spring delivers a maximum deflection load of 360 pounds with a maximum deflection of 5 inches and a spring rate of 72 pounds per inch. It is installed by tool and die makers, industrial maintenance technicians, and press operators working on high-cycle tooling applications.

This die spring is suited for use in stamping dies, injection mold tooling, punch and die assemblies, and general industrial press applications. The blue color coding indicates its load class, allowing for quick visual identification and consistent replacement in multi-spring tooling setups. It is appropriate for both new tooling builds and direct replacement in existing press dies where a 1-1/4 inch bore and 5/8 inch rod configuration is specified.

Key Features

• 1-1/4 inch hole diameter and 5/8 inch rod diameter for precise die and fixture fitment
• 10 inch free length provides extended working travel in deep die sets
• 360 pound maximum deflection load with a 72 pound-per-inch spring rate
• 5 inch maximum deflection for full-stroke tooling applications
• Trapezoidal wire shape increases load density over standard round wire springs
• Chromium alloy steel construction for high-cycle fatigue resistance

Compatibility

Designed as an OEM-style replacement or new-build component for industrial stamping dies and press tooling requiring a 1-1/4 inch bore, 5/8 inch rod diameter, and 10 inch free length blue-class die spring per standard die spring sizing conventions.

Installation Notes

Die springs of this type are installed and replaced by tool and die makers or industrial maintenance personnel. Always de-energize and lock out the press before servicing die components. Verify that the rod diameter clearance and hole bore match the spring dimensions before seating. Do not exceed the rated maximum deflection of 5 inches, as over-compression will shorten fatigue life and may cause failure during press cycling.