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Omega Products ER40 Collet Standard Precision - 10 Micron Run-Out - 2.5mm - 2mm
| Collet Size | ER40 |
| Clamping Size | 2.5-2.0 |
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Engineered for precision and repeatability, the Omega ER40 Collet Standard Precision delivers dependable tool-holding for ER40 collet chucks with an exceptionally tight run-out of 10 microns. Designed to clamp small-diameter tooling with confidence, this collet excels in everyday machining where consistency matters as much as speed.

Key features that set this ER40 collet apart include:
- Ultra-low run-out: 10 microns, helping minimize tool wobble and deliver truer cuts, cleaner finishes, and longer tool life in precision work.
- ER40 standard compatibility: perfect fit for ER40 collet chucks, balancing ease of use with reliable clamping force.
- Diameter range: designed to hold tools in the 2.0–2.5 mm range, making it ideal for small-diameter milling and drilling operations.
- General-purpose reliability: built for routine machining tasks where consistent performance and repeatable results matter day after day.
Why this matters in practice: in precision machining, even slight run-out can translate into uneven chip loads, reduced dimensional accuracy, and diminished surface quality. The Omega ER40 collet’s 10 micron run-out helps maintain steady engagement, enabling smoother tool paths, tighter tolerances, and a more predictable workflow. For shop environments that run small-diameter tooling, this level of accuracy translates into fewer reworks and more predictable cycle times.
Who benefits most from this collet:
- Hobbyists and professionals doing miniature milling, engraving, or precision drilling with ER40 tooling.
- Workshops needing dependable tool retention for small-diameter cutters and burs.
- Fabricators seeking repeatable performance across multiple setups and job runs.
Practical tips to get the most from your ER40 collet:
- Pair this collet with a compatible ER40 chuck and properly tighten using the correct wrench to maintain concentricity.
- Ensure tool shanks are clean and free of burrs before seating in the collet to preserve the 10 micron run-out specification.
- Use appropriate cutting parameters for small-diameter tools to maximize the benefits of accurate collet holding and minimize chatter.
- Store and handle the collet with care to prevent nicks or dents that could affect clamping performance.
In short, the Omega ER40 Collet Standard Precision is a reliable, purpose-built solution for precision-focused machining where small tools demand tight run-out control and repeatable results. If your workflow relies on small-diameter tooling and ER40 chucks, this collet provides the accuracy and consistency you need to achieve better finishes and dependable throughput.
| Collet Size | ER40 |
| Clamping Size | 2.5-2.0 |
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 ER40 Collets Standard Precision - 10 Micron Run-Out
View full collection →You are viewing OM32352. Click any other SKU to view its full details.
| Product SKU | Collet Size | Clamping Size | Price | Stock | Order |
|---|---|---|---|---|---|
| OM32351 | ER40 | 2.0-1.5 | £13.65 | In Stock | |
| OM32352 Viewing | ER40 | 2.5-2.0 | £13.65 | In Stock | |
| OM32327 | ER40 | 3.0-2.0 | £7.31 | In Stock | |
| OM32353 | ER40 | 3.5-2.5 | £11.46 | In Stock | |
| OM32328 | ER40 | 4.0-3.0 | £7.31 | In Stock | |
| OM32354 | ER40 | 4.5-3.5 | £11.46 | In Stock | |
| OM32329 | ER40 | 5.0-4.0 | £7.31 | In Stock | |
| OM32330 | ER40 | 6.0-5.0 | £7.31 | Next Day | |
| OM32331 | ER40 | 7.0-6.0 | £7.31 | In Stock | |
| OM32332 | ER40 | 8.0-7.0 | £7.31 | In Stock | |
| OM32333 | ER40 | 9.0-8.0 | £7.31 | In Stock | |
| OM32334 | ER40 | 10.0-9.0 | £7.31 | In Stock | |
| OM32335 | ER40 | 11.0-10.0 | £7.31 | In Stock | |
| OM32336 | ER40 | 12.0-11.0 | £7.31 | In Stock | |
| OM32337 | ER40 | 13.0-12.0 | £7.31 | In Stock | |
| OM32338 | ER40 | 14.0-13.0 | £7.31 | In Stock | |
| OM32339 | ER40 | 15.0-14.0 | £7.31 | In Stock | |
| OM32340 | ER40 | 16.0-15.0 | £7.31 | In Stock | |
| OM32341 | ER40 | 17.0-16.0 | £7.31 | In Stock | |
| OM32342 | ER40 | 18.0-17.0 | £7.31 | In Stock | |
| OM32343 | ER40 | 19.0-18.0 | £7.31 | In Stock | |
| OM32344 | ER40 | 20.0-19.0 | £7.31 | In Stock | |
| OM32345 | ER40 | 21.0-20.0 | £7.31 | In Stock | |
| OM32346 | ER40 | 22.0-21.0 | £7.31 | In Stock | |
| OM32347 | ER40 | 23.0-22.0 | £7.31 | In Stock | |
| OM32348 | ER40 | 24.0-23.0 | £7.31 | In Stock | |
| OM32349 | ER40 | 25.0-24.0 | £7.31 | In Stock | |
| OM32350 | ER40 | 26.0-25.0 | £7.31 | In Stock | |
| OM33056 | ER40 | 27.0-26.8 | £20.83 | In Stock | |
| OM33057 | ER40 | 28.0-27.8 | £20.83 | In Stock | |
| OM33058 | ER40 | 29.0-28.8 | £20.83 | In Stock | |
| OM32355 | ER40 | 30.0-29.8 | £20.24 | In Stock | |
| OM33060 | ER40 | 31.0-30.8 | £20.83 | In Stock | |
| OM32356 | ER40 | 32.0-31.8 | £20.24 | In Stock |
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