Gibraltar EY6428-G Die Mold Ejector Sleeve Nitride Steel

Product Description

The GIBRALTAR EY6428-G is a nitride coated die steel ejector sleeve designed for use in die mold tooling applications. The sleeve features a 5/32 inch inside diameter and a 1/4 inch outside diameter, with an overall length of 4 inches. The head diameter measures 7/16 inch with a head height of 3/16 inch and a 45-degree chamfer angle. Nitride coating improves surface hardness and wear resistance, extending service life under the repetitive loading cycles common in production molding environments. This component weighs approximately 0.07 pounds. Toolmakers and mold technicians are the primary installers of this type of precision sleeve.

Ejector sleeves of this type are used in injection mold and die cast tooling to eject cylindrical or round-core features from a mold cavity. The EY6428-G suits applications where a close-tolerance sleeve is needed around a core pin to push molded parts free without marking or distorting the part surface. The 4 inch overall length and 125 mm pin length accommodate standard mold plate stack heights in a range of production tooling configurations. This sleeve is suited to both prototype and production mold builds where consistent ejection force distribution is required.

Key Features

• Nitride coated die steel construction for improved surface hardness and wear resistance
• 5/32 inch inside diameter with 1/4 inch outside diameter for close-tolerance fitment around core pins
• 7/16 inch head diameter with 3/16 inch head height for positive seating in ejector retainer plates
• 45-degree chamfer angle for guided assembly and reduced installation stress
• 4 inch overall length suitable for standard mold plate stack configurations
• Lightweight at 0.07 pounds for easy handling during mold build and maintenance

Compatibility

Designed as an OEM-style replacement or original-build component for die mold and injection mold ejector systems requiring a 5/32 inch ID by 1/4 inch OD sleeve with a 4 inch overall length.

Installation Notes

Installation is performed by qualified toolmakers or mold technicians. Ensure the mold is fully de-energized, cooled, and safely secured in a press or work fixture before ejector plate disassembly. Verify core pin diameter and ejector retainer plate bore dimensions against the sleeve specifications before pressing the sleeve into position. Avoid applying side load or impact force to the sleeve head during installation to prevent deformation of the precision-ground surfaces.