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Bison Steel Independent Chuck - 4 Jaw - 1 Piece Jaw (Front Mount) - 250mm
| Type | Independent Chuck |
| Number of Jaws | 4 |
| Mount Type | Front Mount |
| Diameter | 250 |
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Description
The Bison Steel Independent Chuck – 4 Jaw, Front Mount, 250mm is a versatile gripping solution designed for precise holding of round and irregular workpieces. Part of the Bison 4306 series, this four-jaw independent chuck lets you set each jaw’s position separately, giving you exceptional flexibility and control when clamping odd-shaped stock or pieces that aren’t perfectly round.
- Independent 4‑Jaw design for irregular workpieces: Each jaw can be adjusted individually, enabling precise centering and secure grip on non-round shapes for consistent, repeatable results.
- Front mount with solid reversible jaws included: Ready to use out of the box with a complete set of durable reversible jaws for quick setup and long-lasting performance.
- Poland-made reliability and tool life: Built in Poland to tight standards, delivering steady clamping force, durable construction, and extended service life for demanding shop environments.
Designed for engineers, machinists, technicians, and hobbyists alike, this chuck helps you achieve centered, stable holding with confidence. Its independent jaw adjustment supports accurate workholding of irregular shapes, while the front-mount design simplifies integration into existing tooling setups. Trustworthy materials and craftsmanship from the 4306 series translate into reliable performance, minimal downtime, and long-term value in daily shop use.
Part Numbers
- Protool Part Number
- 4306-250
- Brand
- Bison
- Category
- Manual Chuck
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: Bison Steel Independent Chuck - 4 Jaw - 1 Piece Jaw (Front Mount) - 4306
View full collection →You are viewing 4306-250. Click any other SKU to view its full details.
| Product SKU | Type | Number of Jaws | Mount Type | Diameter | Bore | Material | Jaw Type | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|---|---|
| 4306-100 | Independent Chuck | 4 | Front Mount | 100 | 25 | Steel | 1 Piece | £838.46 | 1-2 days | |
| 4306-160 | Independent Chuck | 4 | Front Mount | 160 | 42 | Steel | 1 Piece | £923.26 | 1-2 days | |
| 4306-200 | Independent Chuck | 4 | Front Mount | 200 | 50 | Steel | 1 Piece | £1,247.62 | 1-2 days | |
| 4306-250 Viewing | Independent Chuck | 4 | Front Mount | 250 | 65 | Steel | 1 Piece | £1,414.04 | 1-2 days | |
| 4306-315 | Independent Chuck | 4 | Front Mount | 315 | 80 | Steel | 1 Piece | £1,892.10 | 1-2 days | |
| 4306-400 | Independent Chuck | 4 | Front Mount | 400 | 100 | Steel | 1 Piece | £2,665.90 | 1-2 days | |
| 4306-500 | Independent Chuck | 4 | Front Mount | 500 | 125 | Steel | 1 Piece | £4,838.90 | 1-2 days | |
| 4306-630 | Independent Chuck | 4 | Front Mount | 630 | 160 | Steel | 1 Piece | £7,307.64 | 1-2 days |
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