Associated Spring Raymond 204-528 Die Spring 7in Blue

Product Description

The ASSOCIATED SPRING RAYMOND 204-528 is a medium-duty die spring designed for use in stamping dies, punch presses, and similar tooling applications. It features a trapezoidal wire cross-section, which increases load-bearing surface area compared to round wire, allowing it to deliver a maximum deflection load of 268.11 pounds (1192.60 N) within a compact envelope. The spring is manufactured from chromium alloy steel and identified by its blue color coding, indicating medium-duty classification per ISO 10243 standards. It is installed by toolmakers, die setters, and maintenance technicians working in metal fabrication and press tool environments.

This die spring is suited for medium-duty cycling applications in stamping and forming dies, mold springs, and industrial tooling where consistent, repeatable spring force is required. With a free length of 7 inches (178.00 mm), a rod diameter of 12.50 mm, and a hole diameter of 25.00 mm, it fits standard die set bores used in production tooling. The 67.00 mm maximum deflection (travel to solid) makes it appropriate for applications requiring controlled, predictable stroke within moderate load ranges.

Key Features

• Trapezoidal wire shape increases load capacity and fatigue life compared to round wire die springs
• Blue color coding identifies medium-duty rating per ISO 10243 classification
• Chromium alloy steel construction provides strength and durability under repeated cycling
• Maximum deflection load of 268.11 pounds at full travel to solid
• 67.00 mm maximum deflection allows for controlled stroke in precision tooling setups
• Conforms to ISO 10243 for interchangeability with other ISO-standard die springs

Compatibility

Designed as an ISO 10243-compliant medium-duty die spring with a 25.00 mm hole diameter and 12.50 mm rod diameter, suitable for standard die sets and punch press tooling that accept these bore and rod dimensions.

Installation Notes

Die springs of this type are installed and serviced by toolmakers or die maintenance technicians. Before servicing any press tooling, lock out and tag out all energy sources per applicable OSHA lockout/tagout procedures. Ensure the spring is seated squarely on the rod or in the bore pocket and is not compressed beyond its rated maximum deflection, as exceeding travel to solid will cause rapid fatigue failure. Inspect for cracking or set at regular die maintenance intervals.