Hertel 1-202-0300 3-jaw Lathe Chuck 3 Inch Plain Back

Product Description

The HERTEL 1-202-0300 is a self-centering 3-jaw manual lathe chuck with a 3-inch diameter body and plain back mount. It is designed for general-purpose turning operations on manual lathes, automatically centering the workpiece as the jaws close simultaneously. The cast iron body provides rigidity under load. Rated to 4,000 RPM maximum, this chuck suits a wide range of turning and facing operations in machine shops and toolrooms. Axial runout is held to 0.0006 inches and radial runout to 0.0008 inches, making it appropriate for work requiring repeatable, accurate centering. Installation and operation are handled by machinists and lathe operators.

The 1-202-0300 is suited for manual metalworking lathes in production shops, toolrooms, and maintenance environments. The solid, non-reversible jaws cover a jaw capacity range from 5/64 inch minimum to 2-51/64 inch maximum, handling a broad range of round and hex stock diameters. The plain back mount requires the operator to fit the chuck to a matching back plate for the specific lathe spindle nose. The through-hole diameter of 0.6299 inches accommodates bar stock fed through the spindle for turning operations.

Key Features

• Self-centering scroll mechanism closes all three jaws simultaneously for fast, repeatable workpiece location
• Cast iron body construction provides rigidity and vibration damping under cutting loads
• Solid, non-reversible jaws with a jaw capacity range of 5/64 inch to 2-51/64 inch
• Axial runout of 0.0006 inches and radial runout of 0.0008 inches for accurate centering
• Plain back mount allows fitting to a custom or lathe-specific back plate
• 4,000 RPM maximum speed rating suitable for general turning applications

Compatibility

Designed as a plain back mount 3-jaw lathe chuck intended for manual metalworking lathes; the operator must supply or machine a matching back plate to fit the specific lathe spindle nose configuration.

Installation Notes

Installation is performed by a qualified machinist or lathe operator. The lathe must be fully powered down and at a complete stop before mounting or removing the chuck. A properly fitted back plate must be matched to the lathe spindle nose thread or taper before the chuck body is attached. Verify runout with a test indicator after mounting and tighten all fasteners to the lathe and back plate manufacturer specifications before operation.