Gibraltar MT7731-G Straight Ejector Pin 12mm 630mm Steel

Product Description

The GIBRALTAR MT7731-G is a straight ejector pin designed for use in injection mold tooling and die casting applications. It functions as a component of the ejector system, pushing finished parts out of the mold cavity after each cycle. The pin measures 0.472 inches in diameter, with an overall length of 24.803 inches and a usable pin length of 24.528 inches. Constructed from steel with a nitride finish, it offers surface hardness and wear resistance suited for repetitive high-cycle mold operation. Installation is performed by mold makers and tooling technicians working on plastic injection or die casting molds.

This ejector pin is suited for injection mold tooling in both production and prototype environments. The 0.787-inch head diameter and 0.276-inch head height seat into standard ejector retainer plates. It is applicable to a range of mold base configurations where a 12 mm diameter ejector pin is specified. Typical use is in horizontal injection molding machines in manufacturing or tooling shops.

Key Features

• Straight ejector pin profile for standard mold ejection applications
• 12 mm pin diameter with 620 mm pin length for deep mold applications
• Steel construction with nitride finish for surface hardness and extended service life
• 20 mm head diameter seats into standard ejector retainer plates
• 7 mm head height provides positive retention in ejector plate assemblies
• Sold individually, MOQ of 1

Compatibility

Designed as a standard replacement or spare ejector pin for injection mold and die casting tooling that specifies a 12 mm straight ejector pin diameter and 630 mm overall length.

Installation Notes

Ejector pins are installed by qualified mold makers or tooling technicians. The mold should be fully de-energized, cooled, and removed from the press before any ejector system service. Pins must be seated properly in the ejector retainer plate and should be inspected for straightness and surface condition before reinstallation. Do not force-fit pins into undersized bores, as this can cause galling or damage to the mold plate.