Jacobs 7423 Jaw Nut Unit Chuck No. 33 Replacement

Product Description

The JACOBS 7423 is a jaw and nut unit designed as a replacement component for plain bearing drill chucks. This service part restores worn or damaged chuck assemblies by replacing the jaw and nut unit together as a matched set. It fits Chuck No. 33 configurations and is intended for use in shop, industrial, and trade settings where drill chuck maintenance and repair are performed in-house rather than replacing the full chuck assembly. Machinists, tool repair technicians, and maintenance trades typically source this part to extend the service life of existing equipment.

This jaw and nut unit is suited for repair and rebuild applications involving plain bearing drill chucks identified as Chuck No. 33. It is appropriate for stationary drill presses, portable drilling equipment, and other tool setups that accept a No. 33 plain bearing chuck. Model number U-33 is the manufacturer designation associated with this replacement unit. Installation is typically performed during scheduled tool maintenance or when chuck jaw wear causes runout or gripping inconsistency.

Key Features

• Jaw and nut unit sold as a complete matched replacement set
• Compatible with Chuck No. 33 plain bearing drill chucks
• Manufacturer model designation U-33
• Restores chuck gripping function without full chuck replacement
• UNSPSC Code 27112807 for procurement and catalog classification

Compatibility

Designed for use with JACOBS plain bearing drill chucks identified as Chuck No. 33, manufacturer model U-33.

Installation Notes

Chuck jaw and nut replacement should be performed by a qualified machinist or tool repair technician familiar with drill chuck disassembly procedures. Disconnect or de-energize the tool before beginning any chuck service work. Use appropriate chuck keys and arbor press tooling as required by the chuck design. Inspect the chuck body and spindle for wear or damage before installing the new jaw and nut unit to confirm the replacement will restore proper function.