Please log in here to access all benefits, including promotional discounts and faster checkouts.


Omega Products ER8 Collet Standard Precision - 10 Micron Run-Out - 4.5mm - 4mm
| Collet Size | ER8 |
| Clamping Size | 4.5-4.0 |
Learn more about Klarna

The Omega ER8 Collet Standard Precision is built for machinists who demand consistent grip and dependable performance from their ER8 collet chuck. Designed for general purpose machining, this collet delivers true roundness with a tight, repeatable clamp that minimizes run-out and maximizes tool life.
Why this ER8 collet stands out
- 10 micron run-out means dramatically improved tool alignment, cleaner holes, and crisper finishes even on small-diameter tools.
- Standard precision design pairs perfectly with most ER8 collet chucks, offering reliable compatibility across common milling and drilling setups.
- Durable, precision-ground construction provides stable gripping force over thousands of cycles, reducing deflection during high-speed operations.
- Consistent clamping for round stock supports repeatable results, making it ideal for jobs that require tight tolerances and repeatable cycles.
Ideal use cases
Use this ER8 collet for general milling, precision drilling, and light-duty turning where round tooling must run true. It’s particularly effective for tasks like pocketing, contouring, and pocket chamfering where even minute run-out can affect tool paths and surface finish. The collet’s precision run-out helps maintain concentricity between spindle, tool, and workpiece, delivering smoother finishes and more accurate hole diameters.
Who benefits most
This standard precision ER8 collet is well-suited for hobbyists and professional shops alike who need reliable performance without the complexity of specialty tooling. It’s an excellent choice for operators who value predictable grip, quick tool changes, and consistent results in a busy CNC workflow.
Practical tips for optimal performance
- Keep the collet seating surface clean and free of debris before insertion to preserve true run-out performance.
- Insert tools straight and tighten the collet nut evenly to avoid misalignment.
- For best results, use compatible ER8 collet chuck speeds and feed rates that align with the tool diameter and material being machined.
- Regularly inspect the collet for wear or nicks and replace if concentricity begins to degrade.
With the Omega ER8 Collet Standard Precision, you’re equipping your spindle with a dependable, high-precision clamping solution that supports accurate machining outcomes from first cut to last. Whether upgrading an aging setup or standardizing your tooling kit, this collet helps you achieve cleaner finishes, tighter tolerances, and repeatable performance in everyday shop work.
| Collet Size | ER8 |
| Clamping Size | 4.5-4.0 |
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 ER8 Collets Standard Precision - 10 Micron Run-Out
View full collection →You are viewing OM32007. Click any other SKU to view its full details.
| Product SKU | Collet Size | Clamping Size | Price | Stock | Order |
|---|---|---|---|---|---|
| OM32000 | ER8 | 1.0-0.5 | £11.11 | In Stock | |
| OM32001 | ER8 | 1.5-1.0 | £11.11 | In Stock | |
| OM32002 | ER8 | 2.0-1.5 | £9.61 | In Stock | |
| OM32003 | ER8 | 2.5-2.0 | £9.61 | In Stock | |
| OM32004 | ER8 | 3.0-2.5 | £9.61 | In Stock | |
| OM32005 | ER8 | 3.5-3.0 | £9.61 | In Stock | |
| OM32006 | ER8 | 4.0-3.5 | £9.61 | In Stock | |
| OM32007 Viewing | ER8 | 4.5-4.0 | £9.61 | In Stock | |
| OM32008 | ER8 | 5.0-4.5 | £9.61 | In Stock |
No products match your filters.