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Widin Carbide Corner Radius End Mill For Stainless & Exotics - 4 Flute Variable Helix - 18mm x R0.3
| Cutter Diameter | 18 |
| Number of Flutes | 4 |
| Flute Length | 32 |
| Overall Length | 100 |
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Description
Meet the Widin Carbide Corner Radius End Mill — a precision cutting tool designed for stainless steels and other exotic alloys. With an 18 mm diameter and a 0.3 mm corner radius, this 4‑flute end mill features a variable‑helix geometry to deliver smooth finishes and reliable performance in demanding materials.
Designed for engineers, machinists, and fabricators, it excels in pockets, shoulders, and edges where a precise corner radius and consistent surface quality are essential.
- Unequal index flutes for optimal chip evacuation: promotes efficient chip flow and minimizes built‑up edge, helping you achieve a cleaner surface finish on tough materials.
- Variable‑helix, 4‑flute stability: reduces chatter and vibration for steadier cuts, extending tool life and delivering consistent, high‑quality finishes even in challenging pockets.
- High‑hardness carbide with wear‑resistant edge: durable cutting edge resists wear when machining stainless and exotic alloys, maintaining sharpness and reliable performance over more cycles.
This end mill helps you cut with confidence—producing accurate radii, smoother surfaces, and longer tool life. It supports faster setup and processing, fewer reworks, and dependable results across a range of demanding applications.
Part Numbers
- Protool Part Number
- XR504180
- Brand
- Widin
- Category
- End Mill
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: Widin Carbide Corner Radius End Mill For Stainless & Exotics - 4 Flute Variable Helix (XR504)
View full collection →You are viewing XR504180. Click any other SKU to view its full details.
| Product SKU | Cutter Diameter | Number of Flutes | Flute Length | Overall Length | Shank Diameter | Corner Radius | Price | Stock | Order |
|---|---|---|---|---|---|---|---|---|---|
| XR504020 | 2 | 4 | 5 | 45 | 4 | 0.1 | £26.40 | In Stock | |
| XR504030 | 3 | 4 | 8 | 50 | 6 | 0.1 | £22.54 | In Stock | |
| XR504040 | 4 | 4 | 11 | 50 | 6 | 0.2 | £22.54 | In Stock | |
| XR504050 | 5 | 4 | 13 | 50 | 6 | 0.2 | £22.54 | In Stock | |
| XR504060 | 6 | 4 | 13 | 50 | 6 | 0.2 | £22.54 | 5 days | |
| XR504070 | 7 | 4 | 16 | 60 | 8 | 0.2 | £33.84 | In Stock | |
| XR504080 | 8 | 4 | 19 | 60 | 8 | 0.2 | £33.84 | In Stock | |
| XR504090 | 9 | 4 | 19 | 70 | 10 | 0.2 | £49.72 | In Stock | |
| XR504100 | 10 | 4 | 22 | 70 | 10 | 0.3 | £49.72 | 5 days | |
| XR504110 | 11 | 4 | 22 | 75 | 12 | 0.3 | £75.26 | 5 days | |
| XR504120 | 12 | 4 | 26 | 75 | 12 | 0.3 | £75.26 | In Stock | |
| XR504130 | 13 | 4 | 26 | 80 | 12 | 0.3 | £86.56 | 5 days | |
| XR504140 | 14 | 4 | 26 | 80 | 14 | 0.3 | £155.86 | 5 days | |
| XR504160 | 16 | 4 | 32 | 90 | 16 | 0.3 | £222.44 | In Stock | |
| XR504180 Viewing | 18 | 4 | 32 | 100 | 18 | 0.3 | £341.96 | 5 days | |
| XR504200 | 20 | 4 | 38 | 100 | 20 | 0.3 | £384.20 | In Stock | |
| XR504250 | 25 | 4 | 45 | 120 | 25 | 0.3 | £663.30 | 5 days |
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