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Omega Products ER20 Collet Standard Precision - 10 Micron Run-Out - 8mm - 7mm
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Description
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.
Part Numbers
- Protool Part Number
- OM32138
- 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 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 | 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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