Boneham HL4816LK Hl Drill Bushing Liner with Head

Product Description

The BONEHAM HL4816LK is an HL-series drill bushing liner with head, designed to guide cutting tools with precision in jig and fixture applications. Machined from alloy steel, this liner features a 0.5 inch inside diameter, a 0.75 inch body outside diameter, and an overall length of 1 inch. The flanged head measures 0.875 inches outside diameter and 0.09375 inches in height, providing a positive stop that seats the liner flush against the jig plate. Installation is accomplished via press fit, securing the liner firmly in a prepared hole without additional fasteners. This component is used by machinists, toolmakers, and manufacturing technicians who require repeatable, accurate drill guidance in production or prototype tooling setups.

HL drill bushing liners with head are installed in drill jigs and fixtures across general manufacturing, aerospace fabrication, and metalworking operations. The head-style design is suited for applications where the liner must be positively located against a jig plate surface. This liner accepts renewable drill bushings that slip into the bore, allowing the cutting tool guide to be swapped out without replacing the pressed liner. It is appropriate for both low-volume prototype work and high-cycle production jig assemblies.

Key Features

• Alloy steel construction for wear resistance and dimensional stability under repeated drilling cycles
• 0.5 inch inside diameter accommodates standard renewable bushings for tool guidance
• Flanged head at 0.875 inches outside diameter provides a positive seating surface against the jig plate
• Press fit installation method ensures secure, permanent retention in the jig body
• 1 inch overall liner length suits moderate jig plate thicknesses common in production fixtures

Compatibility

Designed as an OEM-style HL-series press fit liner for use with standard renewable drill bushings in machining jig and fixture assemblies.

Installation Notes

Installation is performed by machinists or toolmakers using a drill press or arbor press to achieve the required press fit. The receiving hole in the jig plate must be machined to the appropriate tolerance to achieve correct interference fit before pressing the liner in place. Ensure the jig plate and liner bore are free of chips and debris prior to installation. Do not hammer the liner in freehand, as uneven force can damage the head flange or distort the bore.