Part includes Lock Nut & Back-Up Screw (where applicable).
Product Description
Straight Shank Collet Chucks
Short “Stubby” ER Collet Holders 3.5″ – 6.2″ OAL
Replacement Lock Nuts &
Open-end hex wrenches
are also available
(Part Numbers In Table Below)
For use on CNC Mills
- Manufactured in USA from high grade, heat-treated alloy steel
- Black Oxide finish for corrosion prevention
- Comes equipped with inside back-up screw and Lock Nut
- Tighten lock nut with a standard open-end wrench
(no special wrench needed, unlike other brands) - Smaller diameter lock nut than most brands make
these ideal for machining hard-to-reach surfaces.
ER lock nuts interchangeable with ER “mini” lock nuts of other manufacturers.
Rovi
Table Of Dimensions
| Chuck Part Number | ER Collet Series | D Shank Diameter | L Overall Length | L1 Lock Nut Length | D1 Lock Nut Diameter | Hex. Wrench Size | Max. Dia. Thru Shank | Chuck Capacity | Wrench Part Number | Lock Nut Part Number |
|
SPH-ER11-16mm
|
ER11 | 16mm | 3.50″ | 0.47″ | 0.62″ | 9/16″ | 1/4″ | .019-.276 | W-0562 | LN-ER11 |
| SPH-ER16-16mm | ER16 | 16mm | 3.65″ | 0.68″ | 0.86″ | 13/16″ | 3/8″ | .019-.394 | W-0812 | LN-ER16 |
| SPH-ER16-20mm | ER16 | 20mm | 3.65″ | 0.68″ | 0.86″ | 13/16″ | 3/8″ | .019-.394 | W-0812 | LN-ER16 |
| SPH-ER16-22mm | ER16 | 22mm | 3.75″ | 0.68″ | 0.86″ | 13/16″ | 3/8″ | .019-.394 | W-0812 | LN-ER16 |
| SPH-ER16-25mm | ER16 | 25mm | 3.75″ | 0.68″ | 0.86″ | 13/16″ | 3/8″ | .019-.394 | W-0812 | LN-ER16 |
|
SPH-ER20-16mm
|
ER20 | 16mm | 3.75″ | 0.78″ | 1.10″ | 1″ | 3/8″ | .039-.512 | W-1000 | LN-ER20 |
|
SPH-ER20-20mm
|
ER20 | 20mm | 3.75″ | 0.78″ | 1.10″ | 1″ | 9/16″ | .039-.512 | W-1000 | LN-ER20 |
|
SPH-ER20-22mm
|
ER20 | 22mm | 3.75″ | 0.78″ | 1.10″ | 1″ | 9/16″ | .039-.512 | W-1000 | LN-ER20 |
|
SPH-ER20-25mm
|
ER20 | 25mm | 3.75″ | 0.78″ | 1.10″ | 1″ | 9/16″ | .039-.512 | W-1000 | LN-ER20 |
| SPH-ER25-25mm | ER25 | 25mm | 6.10″ | 0.84″ | 1.36″ | 1-1/4″ | 3/4″ | .039-.630 | W-1250 | LN-ER25 |
| SPH-ER25-32mm | ER25 | 32mm | 6.10″ | 0.84″ | 1.36″ | 1-1/4″ | 3/4″ | .039-.630 | W-1250 | LN-ER25 |
| SPH-ER32-25mm | ER32 | 25mm | 6.20″ | 0.95″ | 1.61″ | 1-1/2″ | 9/16″ | .039-.787 | W-1500 | LN-ER32 |
| SPH-ER32-32mm | ER32 | 32mm | 6.20″ | 0.95″ | 1.61″ | 1-1/2″ | 3/4″ | .039-.787 | W-1500 | LN-ER32 |
Images to the right (second image in Product Gallery below main image)
All back-up screws have 1/8″ hex. socket
DO NOT OVER TIGHTEN LOCK NUT, ALWAYS USE BACKUP SCREW
Assembly Instructions
Add To Cart
$81.00 – $150.00
Product Images
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