Gibraltar HEP3645-G Straight Ejector Pin 1 in Steel

Product Description

The GIBRALTAR HEP3645-G is a straight ejector pin used in injection mold tooling to push finished parts out of the mold cavity at the end of each cycle. Machined from steel, this pin measures 1 inch in diameter with an 18-inch overall length, making it suited for deeper mold bases and longer ejector stroke requirements. The 1-1/4-inch head diameter and 1/4-inch head height seat properly against standard ejector retainer plates. Mold makers and toolroom technicians specify this pin for production molds where dimensional accuracy and material strength are critical to consistent part ejection.

This ejector pin is used in plastic injection mold tooling applications across both production and prototype mold bases. It is installed within the ejector plate assembly of the mold, where it travels axially to strip the molded part from the core or cavity. Typical applications include medium-to-large mold bases that require full-diameter ejector pins rather than shoulder or step-type variants. This straight-style pin is a common replacement or spare component kept in toolroom inventory for scheduled mold maintenance.

Key Features

• Straight ejector pin profile for direct drop-in fit into standard ejector plate bores
• 1-inch pin diameter for high-load ejection applications
• 18-inch overall length accommodates deep mold base configurations
• 1-1/4-inch head diameter seats against standard ejector retainer plates
• 1/4-inch head height for proper retainer plate pocket clearance
• Steel construction provides the hardness and wear resistance required for repetitive cycling

Compatibility

Designed as an OEM-style replacement or toolroom stock ejector pin for standard injection mold bases requiring a straight-style pin with a 1-inch diameter and 18-inch overall length.

Installation Notes

Installation is performed by qualified mold makers or toolroom technicians. The mold must be fully de-energized, hydraulic pressure bled, and the press placed in lockout/tagout condition before any ejector system service. Pins should be measured and compared against bore tolerances in the ejector plate before installation to confirm proper fit and travel clearance. Do not force pins into undersized bores; verify concentricity and ejector plate alignment to prevent premature pin failure or mold damage.