Associated Spring Raymond 203-640 Die Spring 10 in Light-duty

Product Description

The ASSOCIATED SPRING RAYMOND 203-640 is a light-duty die spring designed for use in metal stamping, punch press, and tooling die applications. It features a trapezoidal wire cross-section and is manufactured from chromium alloy steel, which provides consistent load performance and fatigue resistance under cyclic compression. The spring has a free length of 10 inches (254 mm), a rod diameter of 16 mm, and a hole diameter of 32 mm. Maximum deflection load reaches 286.63 pounds (1275 N) at full travel to solid. The green color coding identifies it as a light-duty spring per ISO 10243 standards. This part is installed by tool and die makers, press technicians, and maintenance machinists.

This die spring is suited for light-duty tooling applications in industrial stamping dies, injection molds, jigs, and fixtures. It is used wherever controlled spring return force is needed in a guided rod-and-hole arrangement. The 102 mm maximum deflection allows for significant stroke in compact die assemblies. Applications include stripping, pressure pads, and knockout functions in progressive and compound dies.

Key Features

• Light-duty rating with green color coding per ISO 10243 standard
• Trapezoidal wire shape for higher load capacity per coil compared to round wire
• Chromium alloy steel construction for fatigue resistance under repeated cycling
• 10 inch (254 mm) free length with 102 mm maximum deflection
• 286.63 pound (1275 N) maximum deflection load
• 16 mm rod diameter and 32 mm hole diameter for standard die set fitment

Compatibility

Designed as an ISO 10243-compliant light-duty die spring for use in standard rod-guided die assemblies with a 16 mm rod diameter and 32 mm hole diameter.

Installation Notes

Die springs are installed by qualified tool and die technicians or maintenance machinists. Always ensure the mating rod and hole dimensions match the spring specifications before installation to prevent buckling or binding. Power down and lock out all press and tooling equipment before servicing any die components. Do not exceed the rated maximum deflection, as compressing a die spring to solid will damage the spring and may create an unsafe condition.