Products Datasheet
DOG CHUCKS
Description:

Jawed chucks Self-centering A self-centering chuck, also known as a scroll chuck uses dogs (usually called jaws), interconnected via a scroll gear (scroll plate), to hold onto a tool or workpiece. Because they most often have three jaws, the term three-jaw chuck without other qualification is understood by machinists to mean a self-centering three-jaw chuck. The term universal chuck also refers to this type. These chucks are best suited to grip circular or hexagonal cross-sections when very fast, reasonably accurate (±0.005 in TIR) centering is desired. Sometimes this type of chuck has four or six jaws instead of three. More jaws grip the workpiece more securely if it is truly cylindrical, and thin-walled work will deform less. Four jaws are also useful for square bar work. There are also independent-jaw (non-self-centering) chucks with three jaws. There are hybrid self-centering chucks that have adjustment screws that can be used to further improve the concentricity after the workpiece has been gripped by the scroll jaws. This feature is meant to combine the speed and ease of the scroll plate's self-centering with the runout-eliminating controllability of an independent-jaw chuck. The most commonly used name for this type is a brand name, Set-Tru. To avoid undue genericization of that brand name, suggestions for a generic name have included "exact-adjust"

Available Brands:

  • YURI

Specifications:

8"
10"
12"
14"
16"
18"
20"
24"

Inquiry Now