Boneham AM00000886 Slip-fixed Drill Bushing 21.5mm Id Steel

Product Description

The BONEHAM AM00000886 is a slip-fixed drill bushing designed for precision hole location in jig and fixture applications. Built to SF and SFM industry standards, this renewable bushing features a 21.5 mm inside diameter with a close tolerance of +0.007 to +0.020 mm, a 30 mm body outside diameter, and a 45 mm length under the head. The steel construction is hardened to 60-65 HRC, providing long service life under repeated drilling cycles. A counterbored head design allows the bushing to seat flush or below the jig plate surface when required. Machinists, toolmakers, and fixture builders install this type of bushing in production drilling and reaming jig plates.

This bushing is suited for production and toolroom environments where precise, repeatable hole location is critical. The slip-fixed installation method allows the bushing to be rotated or removed for tool changes without disturbing the liner bushing, making it well-suited for multi-operation jig setups where drill, reamer, and counterbore operations share a common hole location. It is appropriate for both light-production and high-volume drilling fixtures across manufacturing, metalworking, and machining operations.

Key Features

• Slip-fixed installation method compatible with SF and SFM industry codes for tool-change flexibility
• 21.5 mm inside diameter held to a tight tolerance of +0.007 to +0.020 mm for precise tool guidance
• Steel construction hardened to 60-65 HRC for extended wear life in high-cycle drilling applications
• Counterbored head allows flush or sub-flush seating in jig plate
• Renewable design — bushing can be replaced without removing the liner from the jig plate
• Conforms to ANSI standards for drill bushing dimensions and tolerances

Compatibility

Designed as an ANSI-standard SF and SFM slip-fixed renewable drill bushing for use with compatible liner bushings in standard jig and fixture plates.

Installation Notes

Installation is performed by toolmakers or machinist trades during jig assembly or bushing replacement. Ensure the mating liner bushing bore and the jig plate are clean and free of chips before installing. Power down or de-energize any associated machine tool before servicing a jig plate on the machine. Do not hammer the bushing directly — use a proper press or bushing driver to seat without damaging the head or bore.