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Omega Products ER20 Collet Standard Precision - 10 Micron Run-Out - 4mm - 3mm
| Collet Size | ER20 |
| Clamping Size | 4.0-3.0 |
Learn more about Klarna
Meet the Omega ER20 Collet Standard Precision — a focused clamp that turns your ER20 collet chuck into a reliable workhorse for precise, repeatable toolholding. Built for general machining, this collet delivers a consistently tight grip on small-diameter tools, helping you achieve cleaner finishes and tighter tolerances with every pass.
Why choose the Omega ER20 Collet for your workshop?
- Ten micron run-out (0.01 mm): A Precision you can feel in every cut—minimizing tool deflection and chatter to deliver straighter holes and smoother surfaces.
- ER20 compatibility: Specifically designed to clamp round tooling within an ER20 collet chuck, ensuring dependable fit and repeatable performance across jobs.
- 3–4 mm tooling range: Optimized to securely grip small-diameter shanks, making it ideal for micro-end mills, small drills, and other compact tools used in precise milling, drilling, and engraving tasks.
- Standard precision, reliable results: A practical choice for shops that require consistent performance without over-spec tooling, balancing precision with everyday durability.
Ideal use scenarios
- Milling small-diameter workpieces in aluminum, plastics, and soft metals where precision and surface finish matter.
- Drilling and countersinking tasks that demand stable toolholding to prevent wander and improve hole roundness.
- Engraving and micro-finishing applications where tight run-out translates to crisper detail and cleaner edges.
Who benefits most
- Machining professionals and shop owners who rely on dependable toolholding in ER20 chucks.
- Hobbyists and DIY CNC enthusiasts seeking consistent performance for small-diameter tooling projects.
Practical tips to maximize performance
- Keep tooling clean before clamp-up. Wipe shanks and collet bore to maintain that 0.01 mm run-out target.
- Use the appropriate ER20 collet wrench and tighten gradually in a star pattern to achieve even clamping force without overshoot.
- Pair with compatible ER20 collet chuck for best results; ensure the chuck is clean and in good condition to preserve precision.
- Inspect for wear or deformation after heavy use; replace if the grip or bore shows signs of life loss to maintain accuracy.
The Omega advantage
When you need reliable, repeatable results for small-diameter tooling, this ER20 Collet Standard Precision stands out by prioritizing true run-out control and steady clamping. It’s not about bells and whistles—it’s about consistent performance you can trust on every setup, whether you’re refining a prototype or pushing a production run.
Specifications at a glance
- Type: ER20 Collet (Standard Precision)
- Run-out: 10 microns (0.01 mm)
- Tooling range: 3–4 mm shanks
- Application: General machining with ER20 collet chuck
| Collet Size | ER20 |
| Clamping Size | 4.0-3.0 |
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 ER20 Collets Standard Precision - 10 Micron Run-Out
View full collection →You are viewing OM32134. 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 Viewing | 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 | 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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