CREDIT: DILLON MANUFACTURING
Dillon self-centering Jaw Forming Rings, or Jaw Boring Rings, attach to the front of jaws without tools so installation is fast and simple, and set-up times are slashed. Additionally, they provide a jaw surface true to the machine centerline and increase up-times for running machined parts. Uniform pressure on jaws produces a more consistent bore on large diameter chucks. Compensation for jaw lift, even in worn chucks, yields better part concentricity. Soft jaws, round jaws, and full-grip jaws can be precisely machined for a firmer grip of the workpiece. Dillon Jaw Boring Rings are available in diameter-specific models or adjustable models to bore a range of chuck diameters.
Chuck-diameter-specific versions and adjustable boring rings are available from 6" to 18" in diameter. Both styles feature no-tools attachment.