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Widin Carbide Corner Radius End Mill For Stainless & Exotics - 5 Flute Variable Helix - 20mm x R1.0

SKU:XR50520100

The Widin Carbide Corner Radius End Mill for Stainless & Exotics is a precision milling tool built to handle tough metals with confidence. It features a 20 mm diameter and a 1.0 mm corner rad... Read more ↓
M
S
Cutter Diameter20
Number of Flutes5
Flute Length38
Overall Length104
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£414.96
Prices shown ex. VAT
In Stock— only 1 left
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Free delivery over £50 ex VAT
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14-day returns
30+ years expertise
Klarna
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01732 887334
Mon – Thurs 8:30 – 17:30 · Fri 8:30 – 16:30

Description

The Widin Carbide Corner Radius End Mill for Stainless & Exotics is a precision milling tool built to handle tough metals with confidence. It features a 20 mm diameter and a 1.0 mm corner radius, delivering precise corner radii and dependable geometry for demanding applications.

Its 5-flute, variable-helix design enhances chip emission and helps achieve a smooth workpiece surface on stainless steels and exotic alloys. The cutting edge is formed from high-hardness carbide for excellent wear resistance, and the rake-angle design is tailored to the workpiece characteristics to support reliable machining results.

  • Unequal Index Flutes for Efficient Chip Emission: The unequal flute spacing promotes effective chip evacuation and contributes to a smoother surface finish on challenging materials.
  • High-Hardness Carbide Edge for Wear Resistance: A robust cutting edge maintains sharpness through demanding cuts, delivering consistent performance and long-lasting tool life.
  • Optimized Corner Radius and Rake Angle for Superior Surface Finish: The 1.0 mm corner radius combined with a purpose-built rake angle yields excellent machining surfaces and reliable results on stainless and exotic workpieces.

Designed to work across a range of milling tasks—from precision pocketing to finishing tight radii—this end mill helps you achieve consistent, high-quality results with confidence. The combination of chip-friendly geometry, durable carbide, and carefully tuned rake angle supports a reliable workflow and reduces the need for rework, making it a dependable choice for professionals and serious hobbyists alike.

Part Numbers

Protool Part Number
XR50520100
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.

Ask our technical team about this tool

Not sure if this is the right tool for your job? Ask us about speeds and feeds, material suitability, holders or alternatives — 30+ years of machining experience on the other end.

Prefer to talk? Call 01732 887334 — Mon–Thurs 8:30–17:30, Fri 8:30–16:30.

Full Range: Widin Carbide Corner Radius End Mill For Stainless & Exotics - 5 Flute Variable Helix (XR505)

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You are viewing XR50520100. Click any other SKU to view its full details.

Product SKUCutter DiameterNumber of FlutesFlute LengthOverall LengthShank DiameterCorner RadiusPriceStock Order
XR50506050 65135760.5£23.20 5 days
XR50508050 85196380.5£36.54 In Stock
XR50510050 1052272100.5£53.70 5 days
XR50512075 1252683120.75£81.30 5 days
XR50514075 1452683140.75£168.34 5 days
XR50514075S16 1452692160.75£240.24 5 days
XR50516100 1653292161£240.24 5 days
XR50518100 1853292181£345.86 5 days
XR50518100S20 18532104201£414.96 5 days
XR50520100 Viewing20538104201£414.96 In Stock
XR50525100 25538104251£663.30 5 days

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