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Omega Products ER20 Collet Standard Precision - 10 Micron Run-Out - 8mm - 7mm
SKU:OM32138
Meet the Omega ER20 Collet Standard Precision — the dependable choice for reliable, repeatable tool holding in ER20 collet chucks. Designed for general purpose machining, this collet delivers exc...
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Specification
| Collet Size | ER20 |
| Clamping Size | 8.0-7.0 |
£6.41
Prices shown ex. VAT
In Stock
View Other Sizes →
Free delivery over £50 ex VAT
Secure checkout
14-day returns
30+ years expertise
Pay in 3 interest-free instalments. No extra cost if paid on time. 18+ only.
Learn more about Klarna
Learn more about Klarna
Meet the Omega ER20 Collet Standard Precision — the dependable choice for reliable, repeatable tool holding in ER20 collet chucks. Designed for general purpose machining, this collet delivers exceptionally tight run-out and solid clamping for round tooling, helping you achieve superior precision in every project.
Why this ER20 collet stands out
- 10 micron run-out ensures true concentricity, reducing tool deflection, improving dimensional accuracy, and delivering cleaner finishes on milling, drilling, and reaming tasks.
- Specifically optimized for 7–8 mm tool shanks, making it a versatile choice for common end mills, drills, and shank tooling used in workshops and small CNC setups.
- Crafted from durable hardened steel with a robust, wear‑resistant profile to withstand repeated insertions and removals in busy production or prototype environments.
- Designed for standard precision clamping in an ER20 collet chuck, providing consistent gripping force and dependable performance across jobs.
Ideal use cases
- General purpose milling on small CNC machines or drill presses where tight tolerances and smooth finishes matter.
- Engraving, contouring, or pocketing with small-diameter end mills that demand concentric accuracy.
- Prototype work or light production runs that benefit from quick tool changes and repeatable clamping.
Practical benefits you’ll notice
- Better surface finish due to reduced run-out and minimized tool runout-induced chatter.
- More predictable tool life and consistent diameters across multiple passes.
- Easy installation and removal with reliable grip during heavy cutting or finishing passes.
Tips for optimal performance
- Keep the collet bore clean and free of debris for accurate seating and maximum grip.
- Periodically check run-out with a dial indicator when setting up new tooling to verify that you’re approaching the 10 μm target.
- Use recommended tightening practices on your machine to avoid deformation and preserve accuracy over time.
- Store in a dry environment to protect against corrosion and maintain precision.
| Collet Size | ER20 |
| Clamping Size | 8.0-7.0 |
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.
★★★★★
Nice experience staff are very helpful and interested...
Staff are very helpful and interested in providing a good service making us the customer feel valued.
★★★★★
first place we look
honest about stock and prices are competitive.
★★★★★
Polite and helpful
Staff are very helpful and polite.Goods that were in stock were dispatched same day and back orders were quick in coming through .
★★★★★
Buying experience
Phone requests are handled quickly and without any fuss. The website is easy to use and straightforward to order from. It’s especially helpful that it shows real‑time availability, so we don’t need to call to confirm whether parts will arrive.
Full Range: Omega Products ER20 Collets Standard Precision - 10 Micron Run-Out
View full collection →You are viewing OM32138. 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 Viewing | 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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