Gibraltar DCIM12.5-305 Die Spring Medium-duty Blue

Product Description

The GIBRALTAR DCIM12.5-305 is a medium-duty die spring designed for use in stamping dies, molds, and industrial tooling applications. It features a trapezoidal wire cross-section wound from chromium alloy steel, which provides higher load capacity and longer service life compared to round-wire springs of the same envelope size. The spring measures 12 inches in free length with a 0.5 inch hole diameter and a 0.28125 inch rod diameter. Maximum deflection load is 78 pounds, and maximum deflection is 6.35 inches. The spring rate is 12 pounds per inch. The blue color coding identifies it as a medium-duty rating per industry convention.

This die spring is suited for press tooling, injection molds, stamping dies, and fixture applications where a controlled, repeatable spring force is required. It is typically installed by tool-and-die machinists, mold makers, and industrial maintenance technicians. The 12 inch free length accommodates applications requiring extended travel before reaching solid height. With a compressed length at maximum load of 6.35 inches, it delivers 6.35 inches of usable travel under full deflection load.

Key Features

• Trapezoidal wire cross-section for higher load density and fatigue resistance compared to round-wire designs
• Chromium alloy steel construction for durability under cyclic loading
• Blue color coding indicates medium-duty rating for quick visual identification
• 12 inch free length provides extended travel range
• Spring rate of 12 pounds per inch for predictable, linear force output
• Meets NAAMS, ISO 10243, and ISO 9001:2015 standards

Compatibility

Designed as an OEM-style replacement or new-installation die spring for stamping dies, molds, and industrial tooling systems requiring a medium-duty, 0.5 inch bore, 12 inch free-length spring conforming to NAAMS and ISO 10243 dimensional standards.

Installation Notes

Installation is typically performed by tool-and-die machinists or industrial maintenance technicians during die maintenance or mold servicing. The machine or press must be fully de-energized and locked out before spring replacement. Ensure the rod diameter does not exceed 0.28125 inches and the bore diameter is at least 0.5 inches to achieve proper seating and alignment. Do not compress the spring beyond its rated maximum deflection of 6.35 inches to avoid permanent set or premature failure.