Associated Spring Raymond 103-408 Die Spring Blue Medium-duty

Product Description

The ASSOCIATED SPRING RAYMOND 103-408 is a medium-duty die spring designed for use in stamping dies, punch presses, and industrial tooling applications. It features a trapezoidal wire shape for higher load capacity compared to standard round-wire springs. With a 3/4-inch hole diameter, 3/8-inch rod diameter, and 2-inch free length, it delivers a maximum deflection load of 144 pounds over 1 inch of travel at a spring rate of 150 pounds per inch. The blue color coding identifies its medium-duty rating per industry convention. Licensed tool and die makers and maintenance machinists are the primary installers.

This spring is suited for use in die sets, hydraulic and mechanical presses, jigs, and fixtures in manufacturing environments. The 3/4-inch hole diameter allows it to fit standard die spring pockets, and the 3/8-inch rod diameter is compatible with common guide rods used in progressive and compound die assemblies. It is appropriate for medium-cycle industrial applications where consistent return force and dimensional repeatability are required.

Key Features

• Trapezoidal wire cross-section provides higher load density than round-wire equivalents
• Medium-duty rating with 144-pound maximum deflection load
• Spring rate of 150 pounds per inch for predictable, linear force output
• 1-inch maximum deflection travel
• Blue color coding follows standard die spring duty-rating identification
• Chromium alloy steel construction for fatigue resistance in cyclic loading
• Manufactured under ISO 9001:2008 and ISO/TS 16949:2009 certified quality systems

Compatibility

Designed as an OEM-style replacement or direct-fit die spring for medium-duty stamping die and punch press tooling applications requiring a 3/4-inch hole diameter, 3/8-inch rod diameter, and 2-inch free length.

Installation Notes

Installation is performed by tool and die makers or maintenance machinists during die setup or tooling maintenance. Always de-energize and lock out the press before servicing die components. Ensure the spring pocket depth and guide rod diameter match the spring specifications before installation. Do not compress the spring beyond its rated maximum deflection of 1 inch to avoid permanent set or premature fatigue failure.