Gibraltar BW8664-G Die Mold Sprue Bushing Series U Steel

Product Description

The GIBRALTAR BW8664-G is a die mold sprue bushing designed for use in injection mold and die casting tooling applications. Machined from steel, this Series U bushing features a 0.75 inch shank diameter with a shank length of 2.906 inches and an overall length of 3.781 inches. The 2 inch head diameter provides a stable seating surface within the mold plate. A 0.219 inch hole diameter channels molten material into the mold cavity, while the 0.75 inch corner radius and 0.1875 inch cavity depth support consistent gate geometry. Toolmakers and mold technicians working in production or prototype environments will find this bushing a direct-fit component for standard sprue applications.

This sprue bushing is suited for use in injection molding operations where a standardized Series U configuration is required. It seats into the stationary platen or cavity plate and aligns with the injection nozzle to direct resin into the runner system. Typical installations are found in single-cavity and multi-cavity mold bases used in plastics manufacturing environments. The 0.875 inch head height keeps the bushing flush or slightly proud of the mold face depending on plate thickness.

Key Features

• Steel construction for durability under repeated injection cycle loads
• 0.75 inch shank diameter with 2.906 inch shank length for secure mold plate engagement
• 2 inch head diameter provides broad seating contact at the mold parting face
• 0.219 inch hole diameter sized for standard sprue runner entry
• Series U designation for compatibility with common mold base standards
• 3.781 inch overall length suits standard cavity plate stack heights

Compatibility

Designed as an OEM-style replacement or new-build component for Series U die mold sprue bushing applications in standard injection mold base assemblies.

Installation Notes

Installation is typically performed by a toolmaker or mold technician during mold assembly or maintenance. The mold should be fully cooled and all hydraulic or mechanical clamping pressure relieved before removing or installing sprue bushings. Press-fit or slip-fit installation should be verified against the mold base bore tolerance before assembly. Consult the mold base manufacturer specifications to confirm correct clearance and seating depth for this bushing series.