Jacobs 30621 Ball Retainer Keyless Precision Drill Chuck

Product Description

The JACOBS 30621 is a replacement ball retainer designed for use with keyless precision drill chucks. The ball retainer is an internal chuck component that holds the ball bearings in position, maintaining proper chuck function and grip consistency during drilling operations. This part is sold individually and is intended for technicians and maintenance professionals performing chuck service or repair on compatible JACOBS keyless precision drill chuck assemblies.

This ball retainer is suited for shop, industrial, and field maintenance applications where a keyless precision drill chuck requires internal component replacement. It fits chuck model 100 and is appropriate for use in light to medium-duty drilling setups where maintaining chuck precision is critical. Installers and tool repair technicians are the primary users of this replacement component.

Key Features

• Direct replacement ball retainer for JACOBS keyless precision drill chucks
• Compatible with chuck model number 100 and model S-100
• Sold as a single unit for targeted component-level repair
• Maintains ball bearing position for consistent chuck grip and concentricity

Compatibility

Compatible with JACOBS chuck number 100 (model S-100). Designed for use with JACOBS keyless precision drill chucks requiring ball retainer replacement.

Installation Notes

Chuck disassembly and internal component replacement should be performed by a qualified tool repair technician familiar with precision chuck service procedures. Disconnect and de-energize all power to the tool before beginning any disassembly. Use appropriate precision hand tools and a clean work surface to avoid losing small internal components during service. Refer to the chuck manufacturer service documentation for correct assembly sequence and torque guidance specific to the chuck model.