Gibraltar MEP1029-G Straight Ejector Pin 4.2mm 250mm Steel

Product Description

The GIBRALTAR MEP1029-G is a straight ejector pin used in injection mold tooling to push finished parts from the mold cavity at the end of each cycle. Machined from steel with a nitride finish for improved surface hardness and wear resistance, this pin measures 4.2 mm in diameter with an overall length of 250 mm and a pin length of 247 mm. The head measures 8 mm in diameter and 3 mm in height, providing a positive seating surface against the ejector retainer plate. Mold makers, toolroom machinists, and injection molding technicians install these pins as part of ejector plate assemblies in plastic injection molds.

This ejector pin is suited for use in injection mold bases across a range of cavity configurations in both production and prototype tooling. The nitride surface treatment reduces galling and extends service life in high-cycle applications. The 4.2 mm diameter and 250 mm overall length make it a fit for medium-depth mold components where a standard straight pin geometry is specified. Installation is performed by mold technicians and toolroom personnel during mold build or maintenance intervals.

Key Features

• Straight ejector pin geometry for standard ejector plate assemblies
• 4.2 mm pin diameter and 247 mm pin length for medium-depth mold applications
• 8 mm head diameter and 3 mm head height for positive seating in retainer plates
• Steel construction with nitride finish for hardness and wear resistance
• 250 mm overall length suits a variety of mold base depths
• Sold individually, minimum order quantity of 1

Compatibility

Designed as an OEM-style replacement or direct-fit component for injection mold ejector plate assemblies specifying a straight ejector pin with a 4.2 mm pin diameter and 250 mm overall length.

Installation Notes

Installation is performed by qualified mold makers or toolroom technicians. Before servicing an ejector assembly, ensure the molding machine is locked out and all hydraulic pressure is relieved from the mold clamping system. Pins should be inspected for straightness and surface condition before installation, and the ejector bores in the mold should be checked for proper clearance fit. Do not force-fit pins into undersized bores, as this can cause premature wear or mold damage.