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Omega Products ER20 Collet Standard Precision - 10 Micron Run-Out - 6mm - 5mm
| Collet Size | ER20 |
| Clamping Size | 6.0-5.0 |
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Omega ER20 Collet Standard Precision — designed for dependable, repeatable clamping in ER20 collet chucks. With a tight 10 micron run-out, this collet delivers consistent grip and accurate tool positioning for everyday machining tasks. Its 5–6 mm capacity targets small-diameter tooling, making it a reliable choice for precise milling and drilling workflows.

Precision, reliability, and practical efficiency
In the shop, precision matters. The Omega ER20 Collet Standard Precision is ground to tight tolerances to ensure true running in standard ER20 collet chuck systems. The result is minimized run-out, steadier tool engagement, and cleaner finishes on small-diameter tools. This isn’t just a holder—it’s a trusted interface between your tool and your machine, delivering repeatable performance across jobs.
Key features that matter in real-world use
- 10 micron run-out for improved tool alignment, reduced chatter, and better surface finish on every pass.
- ER20 standard design compatible with common ER20 collet chucks, enabling quick setup and consistent performance.
- 5–6 mm tool shank capacity ideal for small-diameter end mills, drills, and carbide tools used in precision milling and drilling tasks.
- Ground and finished for general purpose machining—a reliable choice for hobbyists and professionals alike seeking dependable results.
- Robust construction to withstand routine workshop use without compromising hold or accuracy.
Who benefits from this ER20 collet
- Hobbyists and makers machining small-diameter tools on benchtop CNCs or mini mills.
- Workshops and labs needing a dependable, repeatable grip for delicate tooling and fine finishes.
- Equipment setups where quick, accurate tool changes plus consistent run-out are critical to throughput.
Why this matters for your workflow
A reliable 10 micron run-out means you’ll see more predictable tool paths, improved accuracy in pocketing and profiling, and longer tool life due to steadier engagement. When you pair this ER20 collet with the right chuck and a quality tool, you minimize rework and maximize each pass—giving you cleaner parts and faster cycle times.
Tips for optimal performance
- Keep the tool shank clean and free of debris before insertion to preserve accuracy.
- Use appropriate tightening procedures to avoid over- or under-clamping—consistent torque helps maintain run-out specifications.
- Match the collet size to the tool shank within the 5–6 mm range for secure, balanced gripping.
- Periodic inspection of the collet and chuck interface helps sustain precision over time.
| Collet Size | ER20 |
| Clamping Size | 6.0-5.0 |
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 OM32136. 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 Viewing | 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 | 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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