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Omega Products ER20 Collet Standard Precision - 10 Micron Run-Out - 10mm - 9mm
| Collet Size | ER20 |
| Clamping Size | 10.0-9.0 |
Learn more about Klarna
Omega ER20 Collet (9–10 mm) – Standard Precision is engineered for round shank clamping in an ER20 collet chuck. This single collet delivers dependable grip and repeatable performance for everyday machining tasks, from hobby work to small-shop production.
With a stated 10 micron run-out, this ER20 collet minimizes tool deflection during cutting. The result is cleaner holes, smoother milling passes, and better surface finish, especially on precision work where concentricity matters.
- Clamping range: 9–10 mm (ER20 collet size)
- Run-out: 10 microns (0.01 mm) for consistent tool alignment
- Designed for use with standard ER20 collet chucks, enabling quick tool changes and reliable gripping
- Ideal for general purpose machining, including milling, drilling, and light engraving with 9–10 mm shanks
Use scenarios bring the most value: secure small-diameter end mills or drills in CNC mills, drill presses, or engraving setups where precision is critical. By pairing this collet with your ER20 chuck, you gain predictable clamping force and repeatable results across multiple setups, reducing downtime and waste from misalignment.
Key benefits in real-world workspaces:
- Consistent concentricity across setups minimizes runout-induced errors
- Compact profile keeps clearance tight without sacrificing rigidity
- Straightforward seating in the ER20 chuck promotes reliable tool retention
To maximize performance, ensure tool shanks are clean and fully seated before tightening, and match tool diameter to the 9–10 mm range. This Omega standard precision collet is a practical choice for shops that value dependable accuracy in routine machining without stepping into premium options.

| Collet Size | ER20 |
| Clamping Size | 10.0-9.0 |
What time are Protool open?
We are open Monday to Friday between 8:30am and 5pm.
Do you offer Free Next Day delivery?
Yes! We offer Free Next Day delivery via Royal Mail Tracked 24 on all orders over £50 ex VAT*. We also offer Free DPD Local Next Day delivery on all orders over £100 ex VAT*.
We also offer the following:
- Royal Mail Tracked 24 — £5.90 (FREE on orders over £50 ex VAT*). Order before 4:30pm for next day delivery. No signature required.
- DPD Local Next Day — £8.00 (FREE on orders over £100 ex VAT*). Standard next day delivery to UK mainland addresses.
- Royal Mail Special Delivery — £12.50. Guaranteed delivery before 1pm the next working day.
- DPD Saturday Delivery — £25.00. Must be ordered on Friday before 4pm. Pre-12pm delivery.
For delivery to Scottish Highlands & Islands, Northern Ireland, Republic of Ireland, or overseas locations, additional charges apply. Please see our delivery page for full details, or call us on 01732 887 334.
*T's & C's and exclusions apply. Please see our delivery page for more information on all our services.
Full Range: Omega Products ER20 Collets Standard Precision - 10 Micron Run-Out
View full collection →You are viewing OM32140. Click any other SKU to view its full details.
| Product SKU | Collet Size | Clamping Size | Price | Stock | Order |
|---|---|---|---|---|---|
| OM32144 | ER20 | 1.0-0.5 | £8.52 | In Stock | |
| OM32145 | ER20 | 1.5-1.0 | £8.52 | In Stock | |
| OM32132 | ER20 | 2.0-1.5 | £6.41 | In Stock | |
| OM32146 | ER20 | 2.5-2.0 | £7.86 | In Stock | |
| OM32133 | ER20 | 3.0-3.5 | £6.41 | In Stock | |
| OM32147 | ER20 | 3.5-2.5 | £7.86 | In Stock | |
| OM32134 | ER20 | 4.0-3.0 | £6.41 | In Stock | |
| OM32148 | ER20 | 4.5-3.5 | £7.86 | In Stock | |
| OM32135 | ER20 | 5.0-4.0 | £6.41 | In Stock | |
| OM32136 | ER20 | 6.0-5.0 | £6.41 | In Stock | |
| OM32137 | ER20 | 7.0-6.0 | £6.41 | In Stock | |
| OM32138 | ER20 | 8.0-7.0 | £6.41 | In Stock | |
| OM32139 | ER20 | 9.0-8.0 | £6.41 | In Stock | |
| OM32140 Viewing | ER20 | 10.0-9.0 | £6.41 | In Stock | |
| OM32141 | ER20 | 11.0-10.0 | £6.41 | In Stock | |
| OM32142 | ER20 | 12.0-11.0 | £6.41 | In Stock | |
| OM32143 | ER20 | 13.0-12.0 | £6.41 | In Stock | |
| OM33038 | ER20 | 13.5-13.3 | £18.52 | In Stock | |
| OM33039 | ER20 | 14.0-13.8 | £18.52 | Next Day | |
| OM33040 | ER20 | 14.5-14.3 | £18.52 | In Stock | |
| OM33041 | ER20 | 15.0-14.8 | £18.52 | In Stock | |
| OM33042 | ER20 | 15.5-15.3 | £18.52 | In Stock | |
| OM33043 | ER20 | 16.0-15.8 | £18.52 | In Stock |
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