(GM839) X-Power Pro Carbide 4Flute Corner Radius End Mill, Stub Length

Y-Coated Stub-Length Corner Radius End Mill

(GM839) X-Power Pro Carbide 4Flute Corner Radius End Mill, Stub Length
$63.03 INC GST $57.30 EX GST
SKU
GM839030
Work materials
PKH

Key features

  • Y-coated solid carbide construction
  • Four flute 30° helix geometry
  • Stub length corner radius profile
Tool material Carbide
Surface treatment YG-1 Y Coating
Mill Diameter (mm)
Corner Radius (mm)
Loading stock…
South Korea Made in South Korea
Free standard delivery on orders over $500.
!If you're not 100% happy with your purchase, we'll replace or refund.
Buy Online

Buy now from our online retailers:

Select your preferred distributor:

Refined surface results

Four flutes support superior workpiece finishes in supported steel machining.

Productive feed potential

Catalogue guidance identifies increased feed rates for productive milling.

Compact radius selection

Stub-length cutters cover 3 to 12 mm diameters and R0.3 to R1.2 radii.

SKUMill Diameter (mm)Corner Radius (mm)Overall length (mm)Shank dia. (mm)FlutesLength of cut (mm)Length below shank (mm)Neck dia. (mm)CAD filesStock Price Qty Add
GM8390303.0R0.350.06.044.07.02.8STEP In stock $57.30
GM8390404.0R0.450.06.045.09.03.7STEP 1-2 Weeks $76.40
GM8390808.0R0.860.08.0410.018.07.4STEP 1-2 Weeks $97.70
GM83910010.0R1.070.010.0412.025.09.4STEP In stock $114.00
GM83912012.0R1.280.012.0415.030.011.4STEP In stock $148.90

Add (GM839) X-Power Pro Carbide 4Flute Corner Radius End Mill, Stub Length to comparison

View Comparison
  • Overview
  • Work Material
  • Reviews
Product Description

YG-1 X-Power Pro GM839 is a Y-coated solid-carbide four-flute stub-length corner-radius end mill. Designed for tool steels, alloy steels, mould steels and other hardened materials, it supports productive milling. Its 30° helix and four-flute geometry support superior workpiece finishes and increased feed rates. The stub-length format combines 4 to 15 mm cutting lengths with corner-radius geometry.

Available variants cover 3 to 12 mm mill diameters and R0.3 to R1.2 corner radii. Plain shanks range from 6 to 12 mm, while selected overall lengths span 50 to 80 mm. These GM839 end mills suit machining operations where a radiused corner and short length are specified.

  • Y-coated solid carbide construction
  • Four flute 30° helix geometry
  • Stub length corner radius profile
  • Designed for tool steels alloy steels mould steels and hardened materials
  • 3 to 12 mm mill diameters
  • R0.3 to R1.2 corner radii
Product Data
Cutting Shape Corner Radius
Length Short, Stub
No. Flutes 4
Surface Treatment YG-1 Y Coating
Tool Material Carbide

Work materials

VDI 3323 recommendations for this tool.

ExcellentGood

Steel

11 grades
Non-alloy steel
ExcellentVDI 4–5
GoodVDI 1–3
Low-alloy steel
ExcellentVDI 7–9
GoodVDI 6
High-alloy and tool steel
ExcellentVDI 11
GoodVDI 10

Hardened materials

3 grades
Hardened steel
GoodVDI 38
Chilled cast iron
ExcellentVDI 40
Hardened cast iron
GoodVDI 41

Cast iron

6 grades
Grey cast iron
GoodVDI 15–16
Nodular cast iron
GoodVDI 17–18
Malleable cast iron
GoodVDI 19–20
VDI grade reference20 grades

Individual grade ratings and nominal hardness references. Base grades and decimal subgrades are listed separately.

Recommended VDI grades and nominal hardness references
VDIWork materialRecommendationHB ref.HRC ref.
1PNon-alloy steelGood125-
2PNon-alloy steelGood19013
3PNon-alloy steelGood25025
4PNon-alloy steelExcellent27028
5PNon-alloy steelExcellent30032
6PLow-alloy steelGood18010
7PLow-alloy steelExcellent27529
8PLow-alloy steelExcellent30032
9PLow-alloy steelExcellent35038
10PHigh-alloy and tool steelGood20015
11PHigh-alloy and tool steelExcellent32535
15KGrey cast ironGood18010
16KGrey cast ironGood26026
17KNodular cast ironGood1603
18KNodular cast ironGood25025
19KMalleable cast ironGood130-
20KMalleable cast ironGood23021
38HHardened steelGood55055
40HChilled cast ironExcellent40042
41HHardened cast ironGood55055

HB and HRC values are nominal catalogue references. Grade subdivisions can vary between catalogues.

Recommendations apply to the listed VDI grades. Unlisted grades have no stated recommendation.

X-Power Pro Endmills

You Might Also Like

Resources

Understanding the Basics of Endmills

Understanding the Basics of Endmills

Endmills are indispensable tools in machining, renowned for their versatility and precision. Whether you’re a seasoned operator or new to machining, understanding...
Connor Urquhart Connor Urquhart

Article

Service & Delivery

How do I purchase my items?

Excision products are available through 300+ local distributors around Australia. Some products may also have buy online options available for online purchase through our distributors.

Find your local distributor

What delivery services do we offer?

We freight out of Melbourne every day for 1-3 days delivery to your local distributor. We also offer upon request (for an extra charge):

  • Send direct
  • Air frieght for small urgent items

How do I return an item?

We offer lifetime returns. If you’re unhappy with your purchase, you can return unused items to us for free – no questions asked.

Have a question about this product?

Contact Sales

+61 (03) 5551 4555

Mon - Fri 7am - 5pm