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

Omega Products BT40 Slim Shrink Fit Chuck - G2.5 - 25,000RPM - 6mm Clamping Diameter - 90mm Gauge Length
| Taper | BT40 |
| Clamping Diameter (d) | 6 |
| D1 | 12 |
| D2 | 18 |
| G | M5 |
| Gauge Length (L) | 90 |
Learn more about Klarna
The Omega BT40 Slim Shrink Fit Chuck is engineered for high-precision machining in space‑constrained setups. Its compact, slim profile delivers strong tool retention and smooth operation at high speeds, making it ideal for close‑clearance milling, drilling, and finishing tasks. Manufactured to BT MAS403 (JIS 6339) standards, it delivers reliable clamping strength and rigidity, with a 3‑degree taper and Form AD/B for balanced performance up to 25,000 RPM. It features a 6 mm clamping diameter and a 90 mm gauge length to provide a compact yet versatile gripping solution.
- Rigid, secure shrink‑fit clamping: BT MAS403/JIS 6339‑compliant construction ensures strong grip and repeatable retention with minimal runout, so tools stay perfectly aligned during high‑speed milling.
- Balanced high‑speed performance: 3‑degree taper with Form AD/B delivers stable, vibration‑controlled operation at up to 25,000 RPM for clean finishes and longer tool life.
- Slim BT40 design for tight spaces: The compact profile, 6 mm clamping diameter, and 90 mm gauge length maximize accessibility in crowded setups without sacrificing rigidity or grip.
This combination of precision clamp, speed‑ready balance, and space‑saving form makes the Omega BT40 Slim Shrink Fit Chuck a reliable core component for any high‑speed machining cell. Expect repeatable tool retention, reduced runout, and smoother finishes across milling and drilling tasks, even in tight work envelopes. With fast tool changes and proven BT MAS403/JIS 6339 compliance, you can trust consistent performance over long production runs, minimize downtime, and improve overall throughput.
| Taper | BT40 |
| Clamping Diameter (d) | 6 |
| D1 | 12 |
| D2 | 18 |
| G | M5 |
| Gauge Length (L) | 90 |
| Balance | G2.5@25000RPM |
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: BT40 Slim Shrink Fit Chucks - G2.5 - 25,000RPM
View full collection →You are viewing OM36817. Click any other SKU to view its full details.
| Product SKU | Clamping Diameter (d) | D1 | D2 | G | Guage Length (L) | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|
| OM36811 | 3 | 9 | 15 | - | 90 | £160.68 | In Stock | |
| OM36812 | 3 | 9 | 18 | - | 120 | £182.06 | In Stock | |
| OM36813 | 4 | 10 | 16 | - | 90 | £155.78 | In Stock | |
| OM36814 | 4 | 10 | 19 | - | 120 | £178.40 | In Stock | |
| OM36815 | 5 | 11 | 17 | - | 90 | £155.78 | In Stock | |
| OM36816 | 5 | 11 | 20 | - | 120 | £178.40 | In Stock | |
| OM36817 Viewing | 6 | 12 | 18 | M5 | 90 | £139.29 | In Stock | |
| OM36818 | 6 | 12 | 21 | M5 | 120 | £160.07 | In Stock | |
| OM36819 | 6 | 12 | 25 | M5 | 160 | £179.61 | In Stock | |
| OM36820 | 8 | 14 | 20 | M6 | 90 | £139.29 | In Stock | |
| OM36821 | 8 | 14 | 23 | M6 | 120 | £160.07 | In Stock | |
| OM36822 | 8 | 14 | 27 | M6 | 160 | £179.61 | In Stock | |
| OM36823 | 10 | 16 | 22 | M8 | 90 | £139.29 | In Stock | |
| OM36824 | 10 | 16 | 25 | M8 | 120 | £160.07 | In Stock | |
| OM36825 | 10 | 16 | 29 | M8 | 160 | £179.61 | In Stock | |
| OM36826 | 12 | 18 | 24 | M10 | 90 | £139.29 | In Stock | |
| OM36827 | 12 | 18 | 27 | M10 | 120 | £160.07 | In Stock | |
| OM36828 | 12 | 18 | 31 | M10 | 160 | £179.61 | In Stock | |
| OM36829 | 14 | 20 | 26 | M10 | 90 | £139.29 | In Stock | |
| OM36830 | 14 | 20 | 29 | M10 | 120 | £160.07 | Next Day | |
| OM36831 | 14 | 20 | 32 | M10 | 160 | £179.61 | In Stock | |
| OM36832 | 16 | 22 | 28 | M12 | 90 | £139.29 | In Stock | |
| OM36833 | 16 | 22 | 31 | M12 | 120 | £160.07 | In Stock | |
| OM36834 | 16 | 22 | 34 | M12 | 160 | £179.61 | In Stock | |
| OM36835 | 18 | 24 | 30 | M12 | 90 | £139.29 | In Stock | |
| OM36836 | 18 | 24 | 33 | M12 | 120 | £160.07 | In Stock | |
| OM36837 | 18 | 24 | 36 | M12 | 160 | £179.61 | In Stock | |
| OM36838 | 20 | 26 | 32 | M16 | 90 | £139.29 | In Stock | |
| OM36839 | 20 | 26 | 35 | M16 | 120 | £160.07 | In Stock | |
| OM36840 | 20 | 26 | 38 | M16 | 160 | £179.61 | In Stock |
No products match your filters.


