Value Collection 428-7006 Manual Lathe Chuck 3-jaw 6-19/64 in

Product Description

The VALUE COLLECTION 428-7006 is a 3-jaw self-centering manual lathe chuck designed for general-purpose turning operations on engine lathes and manual machining centers. The chuck measures 6-19/64 inches (159.94 mm) in diameter and features a plain back mount for direct mounting to a lathe spindle backplate. The cast iron body provides rigidity during turning, and the two-piece hard reversible jaws allow the operator to switch between internal and external gripping configurations without changing jaw sets. A chuck wrench is included in the package. This chuck is installed and serviced by machinists and maintenance technicians working in job shops, manufacturing facilities, and toolrooms.

The 428-7006 is suited for use on manual lathes where a plain back mount configuration is required. The self-centering scroll mechanism brings all three jaws to center simultaneously, making it practical for round and hex stock. The through-hole diameter of 40.00 mm accommodates bar stock fed through the spindle. The axial runout rating of 0.0030 inches supports accurate turning of cylindrical workpieces in standard production and repair applications. The chuck ships with two-piece hard reversible jaws and a chuck wrench ready for installation.

Key Features

• 6-19/64 inch (159.94 mm) chuck diameter for mid-range lathe spindle applications
• 3-jaw self-centering scroll design for fast, repeatable workpiece centering
• Plain back mount for direct attachment to a machined backplate
• Two-piece hard reversible jaws support both internal and external chuck configurations
• 40.00 mm through-hole diameter accommodates bar stock fed through the spindle
• Axial runout of 0.0030 inches for consistent turning accuracy
• Cast iron body construction for durability and vibration damping

Compatibility

Designed as an OEM-style replacement or direct-fit chuck for manual engine lathes requiring a plain back mount configuration with a 6-19/64 inch diameter chuck.

Installation Notes

Installation should be performed by a qualified machinist. The lathe must be powered down and the spindle locked before removing or mounting the chuck. The plain back mount requires a machined backplate matched to the lathe spindle nose; verify backplate thread pattern and seating surface dimensions before installation. Torque the mounting bolts evenly in a cross pattern and confirm runout with a test indicator before returning the machine to service.