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Omega Products ER40 Collet Standard Precision - 10 Micron Run-Out - 9mm - 8mm
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Description

Meet dependable precision for everyday machining with the Omega ER40 Collet Standard Precision. This ER40 collet is designed to deliver solid, repeatable gripping in an ER40 collet chuck, making it a reliable choice for makers and shops that value consistency as much as speed. With a tight 10 micron run-out, it keeps your tools true and your workpiece concentric—so holes line up, threads cut clean, and finishes stay true from start to finish.
Why this ER40 Collet matters
- 10 micron run-out tolerance reduces eccentricity during rotation, enhancing dimensional accuracy and surface finish on every pass.
- 8–9 mm clamping range tailored for common small-diameter tooling and workpieces, helping you lock in the right grip without compromise.
- Standard precision for general machining—a practical balance of rigidity and versatility that covers milling, drilling, and light turning tasks.
- Durable, dependable performance designed to hold its tolerance through routine tooling changes and multiple machining cycles.
- Easy integration with existing ER40 collet chucks so you can upgrade or refresh your setup without changing your tooling ecosystem.
Ideal use cases
- CNC milling of small-diameter cutters, drills, and boring tools where concentricity matters for accuracy and finish.
- Precision drilling and pocketing where consistent tool hold reduces chatter and wander.
- Prototyping and fixture work that demands repeatable clamping across multiple sessions.
How it performs versus common alternatives
Compared to lower-tolerance options, the Omega ER40 Collet Standard Precision delivers tighter run-out, smoother operation, and more reliable repeatability. This translates to fewer scrapped parts, less rework, and a more predictable workflow—especially when you’re dialing in new tooling or producing multiple components with tight tolerances.
Practical tips for optimal results
- Clean the collet and chuck bore before inserting tools to maintain the stated run-out performance.
- Choose tooling that fits within the 8–9 mm range to ensure a secure grip and maximum accuracy.
- Use appropriate cutting speeds and feeds for the material to avoid deflection that could mask true run-out performance.
- Inspect the collet periodically and replace if wear accumulates to preserve precision over time.
Engineered for reliability and precision, the Omega ER40 Collet Standard Precision is a pragmatic choice for workshops that demand consistent results, clean finishes, and dependable tooling performance in everyday machining tasks.
Part Numbers
- Protool Part Number
- OM32333
- 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 ER40 Collets Standard Precision - 10 Micron Run-Out
View full collection →You are viewing OM32333. 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 | 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 | In Stock | |
| OM32331 | ER40 | 7.0-6.0 | £7.31 | In Stock | |
| OM32332 | ER40 | 8.0-7.0 | £7.31 | In Stock | |
| OM32333 Viewing | 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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