Gibraltar BW8618-G Die Mold Sprue Bushing Series B

Product Description

The GIBRALTAR BW8618-G is a Series B die mold sprue bushing designed for injection mold and die casting tooling applications. This bushing features a 1-inch shank diameter with a 2-13/32-inch shank length and a 2-inch head diameter, giving it an overall length of 3-9/32 inches. Constructed from steel, it provides the durability and dimensional stability required for high-cycle mold tooling. The 7/32-inch hole diameter and 3/16-inch cavity depth are precision-ground to support consistent gate geometry. Tool and die makers, mold technicians, and machining shops install this component as a critical interface between the injection nozzle and the mold cavity runner system.

This sprue bushing is suited for use in injection molds and die cast tooling where a Series B configuration is specified. It is a direct-fit replacement or new-build component for mold bases requiring a 1-inch shank diameter and 2-inch head. The 1/2-inch corner radius and 7/8-inch head height are consistent with standard Series B dimensional specifications, making this bushing appropriate for both production mold builds and mold repair applications in industrial and commercial tooling environments.

Key Features

• 1-inch shank diameter with 2-13/32-inch shank length for positive register fit
• 2-inch head diameter with 7/8-inch head height for stable seating against the mold plate
• 7/32-inch hole diameter supports standard sprue gate geometry
• 3/16-inch cavity depth and 1/2-inch corner radius per Series B specification
• Steel construction provides hardness and wear resistance in high-cycle mold applications
• Overall length of 3-9/32 inches for straightforward dimensional verification during installation

Compatibility

Designed as an OEM-style replacement or new-installation component for injection mold bases and die cast tooling requiring a Series B sprue bushing with a 1-inch shank diameter.

Installation Notes

Installation is typically performed by a tool and die maker or mold technician. The mold must be fully de-energized, cooled to ambient temperature, and relieved of any injection pressure before disassembly. Verify that the mold base bore diameter and plate thickness match the bushing shank diameter and length specifications before pressing or bolting in place. Consult the mold design drawings and applicable shop standards for proper seating and retention method.