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Back to 4-Jaw Independent Chucks
Important Update Regarding Sherline Products
October 20, 2026
We would like to share an encouraging development regarding the future of Sherline Products.
We are currently in discussions with an American manufacturer regarding the potential purchase of Sherline’s intellectual property and remaining inventory. The goal of this proposed acquisition is to preserve and revitalize the Sherline brand while providing continued availability of replacement parts, accessories, and machines for our valued customers.
As these discussions progress, we have agreed to temporarily suspend accepting new orders, effective October 19, 2026. This will allow us to preserve our remaining inventory while negotiations are underway.
Although no final agreement has been reached, we are hopeful that this opportunity will provide a positive path forward for the Sherline name and the customers who have trusted our products for more than five decades.
We sincerely appreciate your patience, understanding, and continued loyalty during this transition. We will share additional information as soon as it becomes available.
Our greatest hope is that the Sherline legacy of quality, precision, and American craftsmanship will continue for generations to come.
Karl Rohlin III and Charla Papp
Co-Owners, Sherline Products, Inc.
October 20, 2026
We would like to share an encouraging development regarding the future of Sherline Products.
We are currently in discussions with an American manufacturer regarding the potential purchase of Sherline’s intellectual property and remaining inventory. The goal of this proposed acquisition is to preserve and revitalize the Sherline brand while providing continued availability of replacement parts, accessories, and machines for our valued customers.
As these discussions progress, we have agreed to temporarily suspend accepting new orders, effective October 19, 2026. This will allow us to preserve our remaining inventory while negotiations are underway.
Although no final agreement has been reached, we are hopeful that this opportunity will provide a positive path forward for the Sherline name and the customers who have trusted our products for more than five decades.
We sincerely appreciate your patience, understanding, and continued loyalty during this transition. We will share additional information as soon as it becomes available.
Our greatest hope is that the Sherline legacy of quality, precision, and American craftsmanship will continue for generations to come.
Karl Rohlin III and Charla Papp
Co-Owners, Sherline Products, Inc.
Image shown is a representation only. Actual product may vary.
3.1″ 4-Jaw Independent Chuck – ER-16 Thread
For use on the ER-16 headstock only
Not for use on the standard headstock that comes on all Sherline Machines
Sherline offers their 3.1″ 4-jaw self-centering chucks with a 22 x 1.5 mm threaded hole for use on Sherline’s optional ER-16 spindle nose. They can also be used with certain other ER-16 spindles that use the 22 x 1.5mm thread for the collet nut.
These chucks have four advantages over 3-jaw chucks.
- They can be used to hold irregularly shaped parts.
- They can be used to center parts with a great deal of accuracy.
- 4-jaw chucks can be used to deliberately hold a part off-center.
- They can clamp stock tighter.
This is a valuable asset when machining cams, crankshafts and similar parts. The main disadvantage of the 4-jaw independent chuck is that the jaws must be set individually, adding considerable setup time. The jaws are reversible to accommodate larger stock.
NOTE: The independent chucks don’t have Tommy bar holes like the scroll chucks because most people use the 5/32″ hex wrench into one of the jaw screws to thread the chuck on and off. Our P/N 3020 5/32″ Hex T-Driver works perfectly.
Like the Sherline 3-jaw chucks, the 4-jaw chucks can be used to clamp either externally or internally. Although we recommend the 3-jaw chuck for standard lathe projects, the 4-jaw chuck is considered the accessory that could add the most versatility to your machine. If you feel the 4-jaw chuck would be more useful, and you have no need for the 3-jaw chuck, any lathe “A” package can be ordered with the 4-jaw chuck substituted for the 3-jaw upon request. A clamping groove allows the chuck to hold parts for milling.
Jaw Options
- 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 below - Soft (not hardened or machined) steel jaws are also available when you build your own chuck.
| Chuck Diameter | 3.1″ |
|---|---|
| Jaw Capacity | With jaws in normal position: 3/32″ (2mm) – 1-1/2″ (38mm)
With jaws in reverse position: 1/4″ (6mm) – 2-3/4″ (70mm) |
| Through Hole Diameter | .687″ (17mm) |
| Thread Size | ER-16 (22mm x 1.5mm) |
| Chuck Body Material | 12L14 Steel |
| Chuck Jaws Material | 12L14 Case Hardened Steel |
| Part No. | Description | Quantity |
|---|---|---|
| 10301ER | 3.1″ 4 Jaw Independent Chuck Body M22 X 1.5 Thread | 1 |
| 11451 | 4 Jaw Independent Chuck Jaw* | 4 |
| 11460 | 4 Jaw Independent Chuck Screws (Set of 4) | 1 |
| 40550 | 5/32″ Hex Key | 1 |
*Because chuck master jaws are factory ground to precisely match each chuck body you must send your chuck back to us to be fitted with new master jaws. Please contact us for instructions on how to return your chuck.
Related products
- 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 below
- Soft (not hardened or machined) steel jaws are also available when you build your own chuck.
- 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 below
- Soft (not hardened or machined) steel jaws are also available when you build your own chuck.
3.1″ 4-Jaw Chuck – ER-16
For use on the ER-16 headstock only Not for use on the standard headstock that comes on all Sherline Machines
Sherline offers their 3.1" 4-jaw self-centering chucks with a 22 x 1.5 mm threaded hole for use on Sherline's optional ER-16 spindle nose. They can also be used with certain other ER-16 spindles that use the 22 x 1.5mm thread for the collet nut.
Self-centering chucks offer a quick and convenient way to hold a work piece while it is turned on the lathe. A chuck can also be clamped to a mill table to hold a part for milling. Sherline manufactures our own chucks to a high degree of precision on CNC machines. The jaws are ground and fitted to each chuck by skilled technicians to assure maximum accuracy. Runout is specified to be .003" or less at the chuck jaws.
NOTE: The chuck should not be used in applications where spindle speed exceeds 3000 RPM. If purchasing any of these chucks for use on a non-Sherline ER-16 spindle, confirm that the spindle nose thread is 22 x 1.5 mm before purchasing. The Sherline chuck has a collar that is machined flat at the back to seat against the face of the Sherline ER-16 spindle. This may not be compatible with some non-Sherline ER-16 collet adapters or industrial tool holders. Runout accuracy cannot be guaranteed unless used with a Sherline spindle.
Jaw Options
3.1″ ER-16 3-Jaw Chuck
For use on the ER-16 headstock only Not for use on the standard headstock that comes on all Sherline Machines
Sherline offers their 3.1" three-jaw and four-jaw self-centering chucks with a 22 x 1.5 mm threaded hole for use on Sherline's optional ER-16 spindle nose. They can also be used with certain other ER-16 spindles that use the 22 x 1.5mm thread for the collet nut.
Self-centering chucks offer a quick and convenient way to hold a workpiece while it is turned on the lathe. A chuck can also be clamped to a mill table to hold a part for milling. Sherline manufactures our own chucks to a high degree of precision on CNC machines. The jaws are ground and fitted to each chuck by skilled technicians to assure maximum accuracy. Runout is specified to be .003" or less at the chuck jaws.
NOTE: The chuck should not be used in applications where spindle speed exceeds 3000 RPM. If purchasing any of these chucks for use on a non-Sherline ER-16 spindle, confirm that the spindle nose thread is 22 x 1.5 mm before purchasing. The Sherline chuck has a collar that is machined flat at the back to seat against the face of the Sherline ER-16 spindle. This may not be compatible with some non-Sherline ER-16 collet adapters or industrial tool holders. Runout accuracy cannot be guaranteed unless used with a Sherline spindle.
Jaw Options