Jacobs 30623 Ball Retainer Keyless Precision Drill Chuck

Product Description

The JACOBS 30623 is a ball retainer replacement part designed for use with keyless precision drill chucks. Ball retainers are internal components that maintain proper ball bearing position within the chuck assembly, ensuring smooth jaw movement and consistent grip during drilling operations. This part is sold individually and is intended for technicians and machinists performing chuck service or rebuilds on compatible JACOBS keyless precision drill chuck models. Replacing a worn or damaged ball retainer restores proper chuck function and extends service life without requiring full chuck replacement.

This ball retainer is suited for bench-top and floor-standing drill press applications as well as portable drilling equipment that uses compatible JACOBS keyless precision chuck assemblies. It is typically installed during chuck overhaul or when chuck jaws exhibit irregular movement, slippage, or binding caused by worn internal components. Machinists, tool and die technicians, and maintenance professionals working in industrial or shop environments will find this part useful for scheduled chuck maintenance and repair.

Key Features

• Direct replacement ball retainer for JACOBS keyless precision drill chuck service
• Compatible with JACOBS Chuck No. 160 and model S-160
• Sold as a single unit for targeted component-level repairs
• Supports smooth jaw actuation and consistent bit retention in keyless chuck assemblies

Compatibility

Compatible with JACOBS Chuck No. 160 (Model S-160) keyless precision drill chucks.

Installation Notes

Chuck component service should be performed by a qualified machinist or tool technician familiar with drill chuck disassembly procedures. Disconnect and lock out power to the drill press or drilling machine before beginning any chuck service work. Use appropriate chuck removal tools and follow the chuck manufacturer's service documentation to avoid damaging internal components during disassembly and reassembly. Inspect all related internal components for wear before reinstalling the chuck assembly.