Jacobs 6223-3A Drill Chuck

Jacobs 6223-3A is a plain-bearing, heavy-duty drill chuck designed for secure, high-torque drilling. It accepts drill bits from 1/8 inch up to 5/8 inch in diameter, offering a broad range of sizes in a single chuck. This model is identified as a 3JT Drill Chuck, tying it to Jacobs' 3JT mounting family and the 6223 series. Built by Jacobs, a long-established name in precision chucks, the 6223-3A combines robust construction with a simple, durable interface between the jaws and body that stands up to repeated use in demanding drilling tasks. The 3JT designation specifies the mounting configuration, aligning with spindle systems designed for that chuck type, and helps ensure compatibility with appropriate machinery. Plain-bearing chucks emphasize straightforward design with fewer moving parts, contributing to dependable performance under load. With its 1/8–5/8" capacity and Jacobs' heritage, the 6223-3A provides a reliable option for applications that require a high-capacity, hard-wearing chuck in a compact form factor.