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About the Soft Jaws
Set of 3 or 4 soft (unhardened) jaws for the Self Centering and Independent Chucks These are blank jaws, which are used by customers who want to bore or turn them to custom shapes and sizes to fit their parts.
 The improper use of machine tools and their accessories can result in serious injury. Before using this tool, thoroughly read the instructions and make sure you understand its proper and safe use. |  Â Always wear safety glasses when operating machine tools.
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| Download PDF Instructions for 3-Jaw Chucks
| Download PDF Instructions for 4-Jaw Chucks
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| Material | 12L14 Steel. |
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Sherline 3-jaw chucks are designed with synchronized jaws that move together to automatically center round or hex stock to within a few thousandths of an inch. They offer the fastest and most convenient way to hold work in a lathe, making them one of Sherline’s most popular accessories.
These chucks can grip externally on bar stock or internally on tubing. The jaws are reversible to handle a wider range of part sizes.
Compatibility with Sherline and Other Lathes
Chucks are available with different spindle threads for use on Sherline lathes (3/4-16) and other machines such as older Unimat models (12mm x 1mm or 14mm x 1mm) or Sears 6" lathes (1/2-20).
Note: Thread sizes other than 3/4″ x 16 are custom made and require 5–7 business days.
Jaw Options
If you prefer jaws with a looser fit for faster operation (where maximum accuracy isn’t critical), add a note requesting “loose jaws” below.
Soft steel jaws (unhardened and unmachined) are also available when building your own chuck.
3-Jaw Self-Centering chucks 4-Jaw Self-Centering chucks 4-Jaw Independent chucks Various chuck jaws
Lead time for custom-built chucks is 4-5 business days.
Certain delicate parts require gripping with softer jaw materials. Other operations require chuck jaws that do not transmit particles of rust to the part being held. To accommodate these special circumstances, Sherline now offers 2-piece chuck jaws with interchangeable top jaws made from special materials, and bottom master jaws*. In place of the standard hardened or optional unhardened (“soft”) steel 1-piece jaws, these new top jaws are .600” tall and come in soft materials like Delrin, Teflon, and Nylon, plus harder but non-rusting materials like brass and aluminum. The replaceable top jaws are fastened to the hardened steel bottom jaws with two countersunk socket head screws. They are not stepped so the customer can machine them for custom holding applications. Other materials are available by request.
*Please note that you must purchase the bottom master jaws before you can use the top jaws.
Tall Top JawsWe also offer taller jaws with heights of 1” and 1-1/2”. The tall jaws are made of aluminum and mild steel. These taller jaws were developed for a customer who uses our lathe for custom jewelry design and can be machined to hold custom work, as seen in the photo to the right.
About Top-Jaw Custom OrdersSee the Top-Jaw Custom Orders tab below to design your own chuck jaws.NOTE: To customers who are buying these jaws for an existing chuck, please measure the width of your current chuck jaws with a pair of mics so we can grind your master jaws to match. State your current jaw width in the comments box below. For first-time buyers who are buying a new chuck with these Master jaws, your jaws will be ground to match your chuck. The prices shown are for the jaws only (new chuck is not included).
