Hertel 1-221-0806 3-jaw Lathe Chuck 8 Inches

Product Description

The HERTEL 1-221-0806 is a self-centering 3-jaw manual lathe chuck designed for precision workholding on metal lathes. Built with a cast iron body, it delivers consistent centering performance with an axial runout of 0.0010 inches and a radial runout of 0.0016 inches. The chuck measures 8 inches in diameter and supports a maximum spindle speed of 2,500 RPM. Jaws are reversible, giving machinists flexibility to grip both small-diameter and large-diameter stock without a full jaw swap. It weighs 44.5 pounds and is sized for industrial lathe setups in machine shops, toolrooms, and production environments.

This chuck suits manual lathe operations in both job shop and production machining settings. The 8-inch diameter and jaw capacity range of 5/32 inches minimum to 7-7/8 inches maximum covers a wide variety of round, hex, and bar stock diameters. It is intended for machinists and machine tool operators working on metal-turning applications where repeatable centering and rigid workholding are required.

Key Features

• Self-centering 3-jaw design for fast, repeatable workholding setup
• Reversible jaws accommodate jaw capacity from 5/32 inches to 7-7/8 inches
• Axial runout of 0.0010 inches and radial runout of 0.0016 inches for precision turning
• Maximum rated speed of 2,500 RPM
• Cast iron body construction for rigidity and vibration damping
• Through-hole diameter of 2.1654 inches supports bar-feed and through-spindle work

Compatibility

Designed as an OEM-style manual lathe chuck for metal lathes accepting an 8-inch 3-jaw self-centering chuck configuration. Verify spindle nose type and mounting thread or taper specification on the target lathe before ordering.

Installation Notes

Installation should be performed by a qualified machinist or machine tool technician. Disconnect and lock out power to the lathe before mounting or removing any chuck. Ensure the lathe spindle nose is clean and free of burrs before seating the chuck, and confirm all mounting hardware is properly torqued per the lathe manufacturer's specifications. At 44.5 pounds, use appropriate lifting equipment or a second person to safely handle the chuck during installation.