Boneham SF8812NP Slip-fixed Drill Bushing 53/64 in Id Steel

Product Description

The BONEHAM SF8812NP is a slip-fixed drill bushing designed to guide cutting tools with precision during drilling, reaming, and boring operations. Built to industry code SF, this bushing features a 53/64 inch inside diameter and a 1-3/8 inch body outside diameter, with a head outside diameter of 1-51/64 inches and a head height of 3/8 inch. The body length under head measures 3/4 inch. Constructed from steel, the SF8812NP is a renewable bushing that presses into a liner bushing already mounted in a drill jig, allowing the bushing to be swapped out without disturbing the jig setup. Installation and replacement are handled by tooling professionals and machinists in production and maintenance environments.

The SF8812NP is suited for fixed drilling station applications where a single tool operation is performed at a given jig location. Its slip-fixed design means the bushing is rotated and locked into position via an LS-2 compatible lock screw, preventing rotation or lift during the cutting cycle. This configuration is common in production jig setups across metalworking, fabrication, and general machining shops where repeatable hole location accuracy is required. The renewable design supports high-cycle tooling operations where bushing replacement is part of routine maintenance.

Key Features

• Inside diameter of 53/64 inches with a tolerance of +0.0002 to +0.0006 inches for precise tool guidance
• SF industry code designation: slip-fixed installation method with head retention
• Body outside diameter of 1-3/8 inches (1.3750 inches decimal) for standard liner bushing compatibility
• Steel construction for durability in high-cycle drilling and reaming applications
• Renewable bushing design allows replacement without removing the liner from the jig plate
• LS-2 compatible lock screw interface prevents rotation and axial movement during cutting

Compatibility

Designed as an OEM-style slip-fixed renewable drill bushing for use with LS-2 compatible lock screws in standard SF-type liner bushing installations. No additional model-specific compatibility data was provided in the product input.

Installation Notes

Installation is performed by machinists or tooling technicians familiar with drill jig setup and bushing systems. The bushing is inserted into a mounted liner bushing and locked in place using an LS-2 compatible lock screw — verify the screw is fully engaged before beginning any cutting operation. Ensure the drill press or machining center is fully powered down and the workpiece is securely fixtured before replacing or seating the bushing. Do not force the bushing into an incompatible liner bore, as improper fitment will compromise tool guidance accuracy.