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Back to 3 Jaw Self Centering Chucks
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
Product Description
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
- 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.
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Always wear safety glasses when operating machine tools. |
Download PDF 1040 Instructions
| Chuck Diameter | 3.1″ |
|---|---|
| Jaw Capacity | With jaws in normal position: 3/32″ (2mm) – 1-1/2″ (38mm)
With jaws in reverse position: 3/32″ (2mm) – 2-3/4″ (70mm) |
| Through Hole Diameter | .687″ (17mm) |
| Thread Size | 22mm x 1.5mm |
| Chuck Body Material | 12L14 Steel |
| Chuck Jaws Material | 12L14 Case Hardened Steel |
| Part No. | Description | Quantity |
|---|---|---|
| 10421 | 3.1″ 3 Jaw Chuck Body ER16 – M22 X 1.5 Thread | 1 |
| 10402 | 3.1″ Chuck Scroll | 1 |
| 10413 | Chuck Retainer Ring | 1 |
| 10414 | 3 Jaw Chuck Jaw* | 3 |
| 40580 | Tommy Bar | 2 |
*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.
Shipping
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.
Returns
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.
Related products
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
ER-16 Headstock and Motor Unit
The 3308 would replace the standard headstock, motor and speed control assembly that come on Sherline machines.
The ER-16 nut that ships with your order may be plain or have a black oxide finish.