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Omega Products ER20 Collet Standard Precision - 10 Micron Run-Out - 13.5mm - 13.3mm
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Description

Omega Products ER20 Collet Standard Precision delivers dependable, repeatable toolholding for everyday milling, drilling, and engraving tasks. Designed to seat round tool shanks cleanly in an ER20 collet chuck, this collet keeps your cutting axis true with a stated 10 micron run-out, giving you reliable concentricity across tools and jobs.
What makes this ER20 standard precision collet stand out is its tight tolerance in a practical, value-focused package. A 10 µm run-out translates to less tool deflection, crisper finishes, and more consistent pocket-to-pocket results—especially when you’re pushing speeds and feeds during general machining.
- 10 µm run-out enables precise alignment between tool and spindle for cleaner cuts and tighter tolerances.
- ER20 compatibility pairs with common ER20 collet chucks, ensuring broad interchangeability in most hobbyist to light-industrial setups.
- 13.3–13.5 mm clamping range optimized for a wide range of round shank cutters and mills without swapping hardware.
- Standard precision for general machining ideal for routine milling, drilling, and light finishing across metal, plastic, and wood.
- Durable, dependable construction built to withstand repeated clamping cycles while maintaining accuracy over time.
This collet is ideally suited for hobbyists, small workshops, and production environments where consistent tool grip and predictable results matter. If you’re upgrading from lower-precision holders or tightening up runout in your workflow, the ER20 Standard Precision Collet delivers immediate improvements in concentricity, surface finish, and tool life.
Practical tips for peak performance:
- Keep the tool shank clean and free from burrs before clamping to maximize grip and minimize runout.
- Lightly seat the collet by hand, then finalize tightening with the appropriate wrench to the manufacturer’s torque guidance.
- Periodically verify run-out with a dial indicator after extended use to ensure continued accuracy within spec.
Note: This description highlights the ER20 Standard Precision Collet with 10 µm run-out for general-purpose machining, sized for shanks in the 13.3–13.5 mm range.
Part Numbers
- Protool Part Number
- OM33038
- 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 OM33038. 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 | 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 Viewing | 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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