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Bison Cast Iron Independent Chuck - 4 Jaw - 1 Piece Jaw (Front Mount) - 630mm
| Type | Independent Chuck |
| Number of Jaws | 4 |
| Mount Type | Front Mount |
| Diameter | 630 |
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Description
The Bison 4304 series Cast Iron 4-Jaw Independent Chuck is a rugged front-mount workholding solution designed for machinists, engineers, and hobbyists who need a secure grip on round and irregular shapes. Supplied with a set of solid reversible jaws, this 630mm chuck lets you reposition each jaw independently for flexible, precise clamping of odd-shaped pieces without changing jaws.
Manufactured in Poland, these chucks are renowned for exceptional quality and long tool life, delivering dependable performance under demanding machining conditions.
- Independent jaw positioning: Each jaw can be moved and locked independently, enabling precise centering and secure gripping of irregular workpieces—no awkward compromises or rework.
- Solid reversible jaws included: The chuck arrives with a complete set of durable, reversible jaws, providing reliable grip and quick setup for a variety of part geometries.
- 630 mm size with front-mount design: Robust front-mount construction in a 630 mm size offers strong, stable holding and easy mounting on compatible machines, built from cast iron for rigidity and long life.
With independent jaw control, included reversible jaws, and a durable cast iron build, the Bison 4304 4-jaw chuck delivers repeatable holding across a wide range of parts. It supports faster setups, consistent results, and reliable performance in production runs, prototyping, and workshop applications.
Part Numbers
- Protool Part Number
- 4304-630
- 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 Cast Iron Independent Chuck - 4 Jaw - 1 Piece Jaw (Front Mount) - 4304
View full collection →You are viewing 4304-630. 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 |
|---|---|---|---|---|---|---|---|---|---|---|
| 4304-200 | Independent Chuck | 4 | Front Mount | 200 | 50 | Cast Iron | 1 Piece | £906.30 | 1-2 days | |
| 4304-250 | Independent Chuck | 4 | Front Mount | 250 | 65 | Cast Iron | 1 Piece | £1,123.60 | 1-2 days | |
| 4304-315 | Independent Chuck | 4 | Front Mount | 315 | 80 | Cast Iron | 1 Piece | £1,449.02 | 1-2 days | |
| 4304-400 | Independent Chuck | 4 | Front Mount | 400 | 100 | Cast Iron | 1 Piece | £2,128.48 | 1-2 days | |
| 4304-500 | Independent Chuck | 4 | Front Mount | 500 | 125 | Cast Iron | 1 Piece | £3,934.72 | 1-2 days | |
| 4304-630 Viewing | Independent Chuck | 4 | Front Mount | 630 | 160 | Cast Iron | 1 Piece | £5,080.58 | 1-2 days |
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