Three-jaw chucks are designed so that all three jaws move together and automatically center round or hexagonal parts or stock to within a few thousandths of an inch. These chucks provide the quickest and easiest way of holding work in the lathe. For this reason, they are the most popular of the Sherline accessories. The Sherline 3-jaw chucks are designed so that they can be used to clamp externally on bar stock or internally on tube stock. The jaws are reversible to accommodate larger stock.
Chucks for Sherline and Other Lathes
The chuck is available in several spindle threads for use on Sherline (3/4-16) and other machines such as old Unimat lathes (12mm x 1mm and 14mm x 1mm) or Sears 6″ lathes (1/2-20).
*Please note that chucks with a thread size other than 3/4″ x 16 are made to order and have a lead time of 5-7 business days.
- For those who have jobs where speed and ease of use are more important than maximum accuracy and want a chuck that is loose right from the start (No extra charge).
Add the note “loose jaws” to the comments box above
- Soft (not hardened or machined) steel jaws are also available when you build your own chuck.
Always wear safety glasses when operating machine tools.
|Jaw Capacity||With jaws in normal position: 3/32″ (2mm) – 1-3/16″ (30mm)
With jaws in reverse position: 3/32″ (2mm) – 2-1/4″ (56mm)
|Through Hole Diameter||.687″ (17mm)|
|Thread Size||P/N 1041 – 3/4-16 (Sherline)
P/N 1068 – 12mm x 1mm (Unimat SL 1000)
P/N 1070 – 1/2-20 (Old Sears 6″ Lathes)
P/N 1031 – 14mm x 1mm (Unimat 3 or Cowells)
|Chuck Body Material||12L14 Steel|
|Chuck Jaws Material||12L14 Case Hardened Steel|
|2.5″ 3 Jaw Chuck Body 3/4-16 Thread
2.5″ 3 Jaw Chuck Body 12mm x 1mm Thread
2.5″ 3 Jaw Chuck Body 1/2-20 Thread
2.5″ 3 Jaw Chuck Body 14mm x 1mm Thread
|10412||2.5″ Chuck Scroll||1|
|10413||Chuck Retainer Ring||1|
|10414||3 Jaw Chuck Jaw*||3|
*Because chuck jaws are factory ground to precisely match each chuck body you must send your chuck back to us to be fitted with new jaws. Please contact us for instructions on how to return your chuck.
We do not charge a flat rate for shipping because of the variations in weight for our products. Instead we charge you what the shipping company charges us. Our website uses a shipping calculator based on the daily rates for USPS and UPS based on the weight and destination of the shipment. You can also have us use your UPS/FedEx account number to charge your shipping to. Just enter it in the appropriate box on the checkout page.
Domestic orders are shipped Monday – Friday. Expedited orders must be placed by 11 am PST to ship the same day.
Orders shipping ground have a processing time of 2-3 working days for domestic orders and 4-5 working days for international orders. Click here for more information on our shipping and order policies.
Most merchandise can be returned within 30 day of the purchase date. A refund will be issued to the original form of payment at the original selling price. View our complete return policy and/or start your return online here.
Build Your Own Chuck