ER20 Precision Spring Collets
ER20 spring collets for compatible ER holders and CNC tool-holding applications.
Technical Product Information
ER20 spring collets are specified for compatible ER holders where tool shank diameter, holder condition and nut assembly all affect clamping performance.
The verified DIN 6499 data specifies a 1.0-13.0 mm listed bore range, 31.5 mm length, 21.3 mm body diameter and 1.0 mm collapse range.
Technical Specifications
| Specification | Current published information |
|---|---|
| Product category | ER size collets |
| Model or series | ER20 |
| Applicable standard | DIN 6499 |
| Clamping range | 1.0-13.0 mm |
| Collapse range | 1.0 mm |
| Available sizes | 1.0-13.0 mm |
| 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 |
| Overall length | 31.5 mm |
| Body diameter | 21.3 mm |
| 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
- General CNC milling and drilling
- CNC machining where holder compatibility is verified
Compatible Equipment
- ER collet chucks
- ER nuts
- Compatible CNC tool 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
Related Technical Resources
Frequently Asked Questions
What is the listed ER20 clamping range?
The current catalogue data lists 1.0-13.0 mm for ER20. Buyers should verify exact tool shank fit and holder compatibility.
Is runout tolerance confirmed?
No. Runout should be confirmed by Yuanchen for the requested grade and inspection method.
Can OEM packaging be supplied?
OEM and private-label supply can be reviewed after quantity, packaging and documentation requirements are supplied.
Send ER20 Precision Spring Collets Requirements
Include model, size, quantity, tolerance, packaging requirements and drawings where available.