Abbott Workholding Products KTT5A Soft Lathe Chuck Jaw

Product Description

The ABBOTT WORKHOLDING PRODUCTS KTT5A is a soft lathe chuck jaw with a serrated interface, designed for use in 3-jaw lathe chuck setups on manual and CNC turning equipment. Machined from 6061-T6 aluminum, it offers a lightweight, machinable body that can be bored or faced to a custom ID or OD profile for close-tolerance workholding. The jaw measures 2.5 inches overall length and 1 inch overall width, with a serrated mounting interface that locks into standard chuck master jaws with 0.315-inch fasteners spaced 0.7087 inches apart. It is sold and installed as a set of three jaws.

This jaw is suited for use in machine shops, production turning cells, and toolroom applications where repeatable, customizable workholding is required. The serrated interface provides positive jaw-to-master-jaw engagement, minimizing movement under cutting loads. Typical applications include holding turned parts, bored workpieces, or irregular stock in lathes with up to a 5-inch chuck diameter. Machinists and CNC lathe operators install these jaws when a precision soft jaw setup is needed for a specific part family or short-run job.

Key Features

• Serrated jaw interface for positive, repeatable engagement with standard master jaws
• 6061-T6 aluminum construction - machinable to custom bore or OD profiles
• Compatible with chucks up to 5 inches in diameter
• 0.315-inch fastener size with 0.7087-inch center-to-center mount hole spacing
• Slot width of 0.394 inches and groove width of 0.394 inches for standard chuck slot fitment
• Sold as a 3-jaw set for complete chuck replacement

Compatibility

Designed as an OEM-style replacement soft jaw set for 3-jaw lathe chucks with a maximum compatible chuck diameter of 5 inches and a serrated jaw interface accepting 0.315-inch fasteners.

Installation Notes

Installation is performed by machinists or CNC lathe operators. Power down and lock out the lathe spindle drive before removing or installing chuck jaws. Secure each jaw with the appropriate fastener torqued evenly to prevent jaw rock on the master jaw serrations. After installation, bore or face the soft jaws in place on the machine for best concentricity before use.