Gibraltar BW8650-G Die Mold Sprue Bushing Series U

Product Description

The GIBRALTAR BW8650-G is a die mold sprue bushing designed for use in injection mold and die casting tooling applications. It features a 0.75 inch shank diameter and a 1-13/32 inch shank length, with a 2 inch head diameter and an overall length of 2-9/32 inches. The head height measures 7/8 inches, the hole diameter is 7/32 inches, and the cavity depth is 3/16 inches. A 1/2 inch corner radius is built into the design. Constructed from steel, this bushing is built to handle the compressive loads and thermal cycling common in production mold tooling. It is sold individually and is part of the Series U product line.

This sprue bushing is used in injection molding and die casting setups where a controlled gate entry point is required between the mold and the runner system. It is suited for installation in mold bases that accept a 0.75 inch shank diameter with a 2 inch head. Toolmakers and mold technicians install this component during mold assembly or when replacing worn sprue bushings in existing tooling. The Series U designation indicates a standardized dimensional series common in production mold component sourcing.

Key Features

• 0.75 inch shank diameter with 1-13/32 inch shank length for positive mold registration
• 2 inch head diameter and 7/8 inch head height for secure seating against the mold plate
• 7/32 inch hole diameter controls material flow from the injection unit into the runner system
• 3/16 inch cavity depth and 1/2 inch corner radius support clean sprue release
• Steel construction provides durability under repeated thermal and mechanical cycling
• Series U standardized dimensions simplify replacement and interchangeability

Compatibility

Designed as an OEM-style replacement sprue bushing for die mold tooling applications requiring a Series U, 0.75 inch shank diameter component with a 2 inch head diameter.

Installation Notes

Sprue bushings are installed and replaced by toolmakers or mold technicians during mold assembly or scheduled maintenance. The mold should be fully disassembled from the press and all hydraulic and thermal systems shut down before bushing replacement. Proper alignment with the injection unit nozzle is critical to prevent flash or material leakage at the gate. Follow the mold manufacturer specifications for fit tolerances and seating depth when installing this component.