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Omega Products ER25 Collet Standard Precision - 10 Micron Run-Out - 18.5mm - 18.3mm
| Collet Size | ER25 |
| Clamping Size | 18.5-18.3 |
Learn more about Klarna
Omega ER25 Collet – Standard Precision with 10 Micron Run-Out designed for dependable, repeatable clamping in everyday machining tasks. When accuracy matters, this ER25 collet delivers consistent concentricity and solid grip for milling, drilling, and finishing work.

Key benefits you’ll notice in real-world workflows:
- 10 micron run-out provides tight concentricity between the tool and workpiece, reducing run-out-induced chatter and delivering cleaner holes and more precise slotting.
- Standard precision ER25 collet optimized for round tools in an ER25 chuck, offering reliable grip and consistent clamping force across a range of common machining tasks.
- 18.3–18.5 mm shank compatibility specifically sized to fit tools within this range, ensuring a snug, accurate interface without compromise.
- Robust steel construction engineered to withstand regular Shop Floor use, maintaining accuracy after repeated tool changes and light machining cycles.
- Versatile for general-purpose machining ideal for a variety of materials and tooling—from standard end mills to precision reamers—keeping workflow smooth from setup to finish.
Who benefits most from the Omega ER25 Collet? machinists, hobbyists, and fabrication setups that demand dependable toolholding without the cost of ultra-high-precision systems. If you’re upgrading from basic collets or tightening tolerances on small-diameter tooling, this ER25 option helps achieve better surface finishes, tighter tolerances, and more predictable tool life in day-to-day operations.
Usage scenarios that highlight its value:
- Small-diameter milling in aluminum or steel where consistent run-out directly impacts hole location and feature accuracy.
- Precision drilling and reaming tasks where concentric alignment between drill and workpiece reduces wandering and blinding.
- Prototype work and light production runs where quick tool changes and reliable clamping speed up cycles.
Compared to conventional, generic collets, this ER25 option emphasizes repeatable performance with a clearly defined 10 µm run-out, helping you hit tighter tolerances with less guesswork. For shops building out a dependable toolholding strategy, it pairs well with standard ER25 chucks, delivering a practical balance of precision, durability, and value.
| Collet Size | ER25 |
| Clamping Size | 18.5-18.3 |
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 ER25 Collets Standard Precision - 10 Micron Run-Out
View full collection →You are viewing OM33048. Click any other SKU to view its full details.
| Product SKU | Collet Size | Clamping Size | Price | Stock | Order |
|---|---|---|---|---|---|
| OM32186 | ER25 | 1.0-0.5 | £9.45 | In Stock | |
| OM32202 | ER25 | 1.5-1.0 | £11.35 | In Stock | |
| OM32187 | ER25 | 2.0-1.0 | £5.96 | In Stock | |
| OM32203 | ER25 | 2.5-2.0 | £9.17 | In Stock | |
| OM32188 | ER25 | 3.0-2.5 | £5.96 | In Stock | |
| OM32204 | ER25 | 3.5-2.5 | £9.17 | In Stock | |
| OM32189 | ER25 | 4.0-3.0 | £5.96 | In Stock | |
| OM32205 | ER25 | 4.5-3.5 | £9.17 | In Stock | |
| OM32190 | ER25 | 5.0-4.0 | £5.96 | In Stock | |
| OM32191 | ER25 | 6.0-5.0 | £5.96 | In Stock | |
| OM32192 | ER25 | 7.0-6.0 | £5.96 | In Stock | |
| OM32193 | ER25 | 8.0-7.0 | £5.96 | In Stock | |
| OM32194 | ER25 | 9.0-8.0 | £5.96 | In Stock | |
| OM32195 | ER25 | 10.0-9.0 | £5.96 | In Stock | |
| OM32196 | ER25 | 11.0-10.0 | £5.96 | In Stock | |
| OM32197 | ER25 | 12.0-11.0 | £5.96 | In Stock | |
| OM32198 | ER25 | 13.0-12.0 | £5.96 | In Stock | |
| OM32199 | ER25 | 14.0-13.0 | £5.96 | In Stock | |
| OM32200 | ER25 | 15.0-14.0 | £5.96 | In Stock | |
| OM32201 | ER25 | 16.0-15.0 | £5.96 | In Stock | |
| OM33044 | ER25 | 16.5-16.3 | £18.52 | In Stock | |
| OM33045 | ER25 | 17.0-16.8 | £18.52 | In Stock | |
| OM33046 | ER25 | 17.5-17.3 | £18.52 | In Stock | |
| OM33047 | ER25 | 18.0-17.8 | £18.52 | In Stock | |
| OM33048 Viewing | ER25 | 18.5-18.3 | £18.52 | In Stock | |
| OM33049 | ER25 | 19.0-18.8 | £18.52 | In Stock | |
| OM33050 | ER25 | 19.5-19.3 | £18.52 | In Stock | |
| OM33051 | ER25 | 20.0-19.8 | £18.52 | In Stock |
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