Gibraltar DCIH25-51 Heavy-duty Die Spring Red

Product Description

The GIBRALTAR DCIH25-51 is a heavy-duty die spring designed for use in metal stamping, forming, and die tooling applications. Built from chromium alloy steel with a trapezoidal wire cross-section, it delivers high load capacity in a compact form factor. The spring measures 2 inches in free length with a 1-inch hole diameter and a 0.5-inch rod diameter. At maximum deflection of 0.66 inches, it handles a peak load of 612 pounds. The red color coding identifies it as a heavy-duty rating per standard die spring classification. Licensed machinists, tool and die makers, and precision fabricators install this part in progressive and compound dies.

This die spring is suited for industrial tooling environments where consistent, high-cycle compression performance is required. It fits standard die sets with 1-inch hole bores and 0.5-inch guide rods. Typical applications include punch and die assemblies, stripper plates, and pressure pads in stamping operations. Its chromium alloy steel construction resists fatigue under repeated compression cycles, making it appropriate for both prototype and production tooling.

Key Features

• Heavy-duty load rating with a maximum deflection load of 612 pounds
• Trapezoidal wire shape for higher load capacity relative to round-wire springs of the same envelope
• Chromium alloy steel construction for fatigue resistance in high-cycle applications
• Red color coding identifies heavy-duty duty rating at a glance during tooling setup
• Compliant with NAAMS, ISO 10243, and manufactured under ISO 9001:2015 registered quality standards
• Spring rate of 931 pounds per inch for predictable, linear compression behavior

Compatibility

Designed as a standard heavy-duty die spring for tooling assemblies using a 1-inch hole diameter bore and a 0.5-inch guide rod. No specific equipment model compatibility data was provided by the manufacturer for this part.

Installation Notes

Installation should be performed by qualified toolmakers or machinists familiar with die assembly procedures. Ensure the guide rod and bore dimensions match the spring specifications before installation to prevent buckling or off-axis loading. De-energize and lock out all press equipment before removing or installing die components. Do not compress the spring beyond its rated maximum deflection of 0.66 inches, as exceeding this value will reduce service life and may cause permanent set.