Collet Nuts
Collet nuts for ER and related tool-holding systems, supplied as accessories or matched with collet orders.
Technical Product Information
Collet nuts are critical accessories for applying correct clamping force to ER and related collet systems.
Verified nut families include ER-A, ER-UM, ERS sliding, ERFM anti-slip, ER-MS, ER-M, GER and SK styles.
Technical Specifications
| Specification | Current published information |
|---|---|
| Product category | Tool-holder accessories |
| Model or series | ER-A, ER-UM, ERS, ERFM, ER-MS, ER-M, GER and SK nut families |
| Runout or accuracy specification | Not applicable as a standalone published specification |
| Clamping range | Depends on matching collet series |
| Collapse range | Depends on matching collet series |
| Available sizes | ER11 through ER40 and SK06 through SK25 across listed nut styles |
| Surface finish | Special surface treatment used on listed collet-chuck nuts |
| 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 |
| ER11-A | Ø19 mm; M14×0.75; height 12 mm |
| ER16-A | Ø28 mm; M22×1.5; height 18 mm |
| ER20-A | Ø33.6 mm; M25×1.5; height 19.5 mm |
| ER25-UM | Ø42 mm; M32×1.5; height 20.5 mm |
| ER32-UM | Ø50 mm; M40×1.5; height 23 mm |
| ER40-UM | Ø63 mm; M50×1.5; height 26 mm |
Applications
- Tool-holder assembly
- Spare-part supply
- Distributor inventory
Compatible Equipment
- ER collets
- ER collet chucks
- Collet spanners
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
Can nuts be matched with collets?
Yes. Send the collet series and holder model so Yuanchen can confirm matching accessories.
Are balance grades confirmed?
No. Balance requirements must be reviewed for the specific nut and holder configuration.
Send Collet Nuts Requirements
Include model, size, quantity, tolerance, packaging requirements and drawings where available.