Boneham AM00000380 Headless Lm Drill Bushing Liner

Product Description

The BONEHAM AM00000380 is a headless LM-series drill bushing liner designed to guide interchangeable drill bushings with precision in jig and fixture applications. Built from steel and hardened to 60 to 65 HRC, this liner provides a durable, wear-resistant bore that maintains accurate hole location over repeated tool passes. It features a 12mm inside diameter, an 18mm body outside diameter, and an overall liner length of 25mm. Installation is by press fit into the jig plate, locking the liner in place without the need for a head or retaining ring. Machinists, toolmakers, and fixture builders select this liner as the permanent foundation for renewable slip or fixed bushings.

This liner is used in drill jigs, fixture plates, and precision tooling setups across manufacturing and machining environments. The LM industry code identifies it as a standard headless liner compatible with interchangeable bushings of matching liner bore size. Typical applications include production drilling, reaming, and boring operations where the liner stays pressed in the jig plate while the slip bushing is changed between operations. It is suited for both light industrial and high-volume production tooling.

Key Features

• 12mm inside diameter accepts standard LM-series interchangeable slip or fixed bushings
• 18mm body outside diameter for press-fit installation into jig plate bores
• 25mm overall liner length provides stable guidance depth for the mating bushing
• Steel construction hardened to 60 to 65 HRC for long service life and wear resistance
• Headless design sits flush with or below the jig plate surface, allowing full bushing seating
• Press-fit installation method requires no additional hardware or retaining features

Compatibility

Designed as an OEM-style replacement and standard component for LM-series headless drill bushing liner applications in precision drill jigs and tooling fixtures.

Installation Notes

Press-fit installation should be performed using an arbor press or hydraulic press to avoid damage to the liner bore or jig plate. Ensure the receiving bore in the jig plate is machined to the appropriate interference-fit tolerance before pressing the liner in place. Do not drive the liner with a hammer directly on the bore face. Consult applicable tooling and fixture standards for recommended press-fit tolerances when designing the mating plate bore.