Pratt Burnerd 8140-40525 15in 1.5mm Pitch Set of 3 Serrated Soft Chuck Jaws

This is a new set of three (3) Pratt Burnerd America / Atlas Workholding soft chuck jaws, part number 8140-40525, labeled "15 SFT JW 1.5X60" — designating compatibility with a 15-inch lathe chuck, serrated jaw-to-chuck interface with a 1.5 mm pitch at 60° serration angle (the industry-standard JW serration pattern). The jaws are manufactured from machinable steel, featuring a fully serrated gripping face and a central T-slot/key channel with two bolt-down mounting holes (countersunk from the rear) for secure, repeatable location in the chuck body. Soft jaws of this type are bored or turned to a custom diameter by the end user, allowing precise, part-specific workholding for repeat production runs on lathes with 15-inch chucks using the compatible Pratt Burnerd or Atlas Workholding jaw slide system. Each jaw measures approximately 6-1/2" overall length, 2-1/2" overall width, and features a bolt-hole center spacing of approximately 1.69 inches; at this size class, each jaw is a substantial steel forging, and the set of three ships as received in new/unused condition.

Product Specifications