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Omega Products ER20 Collet Standard Precision - 10 Micron Run-Out - 13mm - 12mm
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Description
Meet the Omega ER20 Collet Standard Precision—a purpose-built clamping solution for ER20 collet chucks that engineers trust for consistent, repeatable machining results. This collet is designed to hold cutting tools securely with minimal run-out, making it an ideal choice for general purpose milling, drilling, and precision finishing tasks.
Exceptional run-out performance: At the heart of this collet is a tight 10 micron run-out. That level of concentricity translates to truer toolpaths, smoother cuts, and improved surface finish. When your end mills, drills, or other round tooling stay precisely centered, you reduce chatter and wear, and you achieve more accurate dimensions with every pass.
Standard precision, proven reliability: Built for dependable everyday machining, this ER20 collet offers consistent clamping force across full engagement. The design minimizes run-out drift even after repeated tool changes, so you can trust it on long runs and repetitive jobs alike.
Optimized for 12–13 mm tooling range: Specifically tuned to integrate seamlessly with ER20 toolholding, this collet excels with tooling in the 12–13 mm class, delivering a secure grip that stays true under load. Use it for a wide range of tools common in workshop and shop-floor environments.
Versatile for a variety of machining scenarios: Whether you’re pocketing, contour milling, or doing precision drilling, the standard precision ER20 collet keeps your tooling aligned with your spindle. It’s a reliable choice for shops that run mixed workloads and require quick tool changes without sacrificing accuracy.
Quality construction for demanding environments: Designed to perform in busy machinist setups, this collet balances rigidity with smooth operation. Its robust geometry minimizes deformation under typical clamping forces, helping you maintain tight tolerances even after hours of use.
Practical guidance for best results:
- Inspect both the collet bore and spindle chuck bore for cleanliness before tool insertion to maximize concentricity.
- Insert the tool fully and tighten to recommended torque to ensure uniform clamping force around the circumference.
- Use compatible ER20 tooling designed for precision work to preserve the 10 µm run-out advantage.
- Perform routine checks on run-out with a test piece to confirm consistency across tool changes.
Designed for machinists who demand precision without sacrificing workflow efficiency, the Omega ER20 Collet Standard Precision with 10 micron run-out is a reliable, high-precision choice for your ER20 chuck ecosystem. Add it to your toolkit and experience tighter tolerances, cleaner finishes, and repeatable results across your milling and drilling projects.

Part Numbers
- Protool Part Number
- OM32143
- Brand
- Omega
- Category
- ER Collet
Need cutting data? Call 01732 887334 or email sales@protool-ltd.co.uk.
Delivery
Free UK mainland delivery on orders over £50 ex VAT. In-stock items ordered before 4:30pm are dispatched the same working day. Full delivery information.
Returns
14-day returns on unused stock items in original packaging. Special-order and bespoke tooling is non-returnable. Read our returns policy.
Technical Support
Over 30 years of machining experience behind the counter. Call 01732 887334, Mon–Thurs 8:30–17:30, Fri 8:30–16:30.
Trade Accounts
Credit accounts, contract pricing and scheduled call-off orders available for trade customers. Apply for an account.
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 OM32143. 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 | 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 Viewing | 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 | In Stock | |
| 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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