ER Spring Collets
Full-range ER spring collets for repeatable CNC tool holding across common ER holder systems.
Technical Product Information
Yuanchen manufactures ER spring collets for distributors, machine shops and OEM buyers requiring repeatable clamping in CNC milling, drilling, boring, reaming and tapping operations.
The current catalogue data confirms ER8 through ER50 dimensional families and clamping ranges. Runout grade, material grade, heat-treatment values and inspection documentation should be confirmed against the buyer specification before quotation.
Technical Specifications
| Specification | Current published information |
|---|---|
| Product category | Spring collets |
| Model or series | ER8, ER11, ER16, ER20, ER25, ER32, ER40, ER50 |
| Applicable standard | DIN 6499 |
| Clamping range | 1.0-36.0 mm across ER8 to ER50 catalogue families |
| Collapse range | 0.5 mm for ER8 and ER11; 1.0 mm for ER16 and larger |
| Available sizes | ER8, ER11, ER16, ER20, ER25, ER32, ER40, ER50 |
| Packaging | Standard export packaging; private-label packaging subject to confirmation |
| OEM availability | Available subject to drawing, quantity and engineering review |
| Private-label availability | Available subject to quantity and packaging review |
| Custom manufacturing availability | Available subject to drawing or sample review |
| Tool engagement | At least two-thirds of the collet bore length; full engagement is recommended |
| Maximum tool diameter | Must not exceed the collet maximum clamping diameter |
Applications
- CNC milling
- Drilling
- Boring
- Reaming
- Tapping where holder compatibility is confirmed
Compatible Equipment
- ER collet chucks
- ER nuts
- CNC milling centres
- Drilling and tapping holders
Inspection and Quality Control
Dimensional inspection, runout verification, hardness testing and surface inspection can be agreed based on the order requirement. No unverified tolerance is presented as confirmed on this page.
Review quality-control processOEM and Private Label
OEM production, private-label packaging and custom manufacturing are available subject to drawing, quantity, marking and documentation review.
OEM and private-label optionsRelated Products
ER size pages
Related Technical Resources
Frequently Asked Questions
Which ER sizes are listed by Yuanchen?
The current catalogue data lists ER8, ER11, ER16, ER20, ER25, ER32, ER40 and ER50 families.
Can Yuanchen supply OEM ER collets?
OEM and private-label supply can be discussed after drawings, model codes, quantities and inspection requirements are reviewed.
Is a runout tolerance confirmed?
No public runout tolerance is confirmed in the repository. Yuanchen should confirm the inspection grade for each order.
Send ER Spring Collets Requirements
Include model, size, quantity, tolerance, packaging requirements and drawings where available.