Part includes Lock Nut & Back-Up Screw (where applicable).
Product Description
Straight Shank Collet Chucks
Long ER Collet Holders 6.8″ – 16″ 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 |
D Shank Diameter |
L Overall Length |
L1 Lock Nut Length |
D1 Lock Nut Diameter |
Hex. Wrench Size |
Max. Dia. Thru Shank |
ER Collet Series |
Chuck Capacity |
Wrench Part Number |
Lock Nut Part Number |
PCH-ER11-0500S-8L | 0.500″ | 8″ | 0.47″ | 0.62″ | 9/16″ | Solid | ER11 | .019 – .276 | W-0562 | LN-ER11 |
PCH-ER11-0500S-9L | 0.500″ | 9″ | 0.47″ | 0.62″ | 9/16″ | Solid | ER11 | .019 – .276 | W-0562 | LN-ER11 |
PCH-ER16-0750CH-10L | 0.750″ | 10″ | 0.68″ | 0.86″ | 13/16″ | Coolant Hole | ER16 | .019 – .394 | W-0812 | LN-ER16 |
PCH-ER16-0750CH-14L | 0.750″ | 14″ | 0.68″ | 0.86″ | 13/16″ | Coolant Hole | ER16 | .019 – .394 | W-0812 | LN-ER16 |
PCH-ER20-1000S-10L | 1.000″ | 10″ | 0.78″ | 1.10″ | 1″ | Solid | ER20 | .039 – .512 | W-1000 | LN-ER20 |
PCH-ER20-1000CH-12L | 1.000″ | 12.50″ | 0.78″ | 1.10″ | 1″ | Coolant Hole | ER20 | .039 – .512 | W-1000 | LN-ER20 |
PCH-ER20-1000S-14L | 1.000″ | 14″ | 0.78″ | 1.10″ | 1″ | Solid | ER20 | .039-.512 | W-1000 | LN-ER20 |
PCH-ER20-1000CH-16L | 1.000″ | 16″ | 0.78″ | 1.10″ | 1″ | Coolant Hole | ER20 | .039-.512 | W-1000 | LN-ER20 |
PCH-ER25-1250 ** | 1.250″ | 7.25″ | 0.84″ | 1.36″ | 1-1/4″ | 3/4″ | ER25 | .039 – .630 | W-1250 | LN-ER25 |
** Image to the right
* Solid Shank items have no thru-hole or backup screw
All back-up screws have 1/8″ hex. socket
Extra-long chucks (8″+) are limited supply. Please check availability before ordering
DO NOT OVER TIGHTEN LOCK NUT, ALWAYS USE BACKUP SCREW