Boneham L6428NC Headless L Drill Bushing Liner Steel

Product Description

The BONEHAM L6428NC is a headless L-type drill bushing liner used to guide drill bits and other cutting tools with precision in jig and fixture applications. It features a 3/4-inch inside diameter, a 1-inch body outside diameter, and a 1-3/4-inch liner length. Manufactured from alloy steel and hardened to 60-65 HRC, this bushing liner provides the wear resistance required for repetitive drilling operations. Installation is accomplished via press fit, securing the liner firmly in the jig plate without the need for a retaining head. This component is a standard tool in machine shops, metalworking facilities, and manufacturing environments where drilling accuracy is critical.

Headless L drill bushing liners are designed for use in drill jigs where a flush or recessed installation is required. The L-type liner is the receiver component used in conjunction with slip-renewable bushings, allowing worn or damaged drill bushings to be replaced without removing the liner from the jig plate. This liner is suited to production drilling setups in industrial and manufacturing environments where consistent hole placement is essential across high-volume runs.

Key Features

• 3/4-inch inside diameter accommodates standard slip-renewable drill bushings
• Alloy steel construction hardened to 60-65 HRC for extended service life under repetitive use
• Press fit installation secures liner into jig plate without mechanical fasteners
• Headless design allows flush mounting in jig plates where clearance is limited
• L-type liner industry code for compatibility with standard L-type renewable bushing systems

Compatibility

Designed as an OEM-style replacement liner for standard L-type headless drill bushing systems used in drill jig and fixture applications.

Installation Notes

Press fit installation requires an arbor press or hydraulic press to seat the liner squarely into the jig plate bore. Ensure the receiving bore is machined to the correct tolerance before pressing to avoid liner distortion or misalignment. Verify all workholding fixtures are secured and all machine power is off before servicing or replacing jig components. Consult applicable machining and tooling standards for press fit tolerances appropriate to the application.