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Made in South Korea
X-POWER PRO 4 Flute 30°Helix Stub Corner Radius End Mill (GM839)
Code: GM839030
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Key Features
- 4 flutes with 30° helix for stable chip evacuation and smooth cutting
- Stub length for maximum rigidity in shallow features and slotting
- Corner radius edges reduce chipping and improve edge strength
Made in South Korea
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| SKU | Mill Diameter (mm) | Corner Radius (mm) | Overall length (mm) | Shank diameter (mm) | Flutes | Length of cut (mm) | Length below shank (mm) | Neck diameter (mm) | Stock | Price | Qty | Add |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GM839030 | 3.0 | R0.3 | 50.0 | 6.0 | 4 | 4.0 | 7.0 | 2.8 | In stock | $57.30 | ||
| GM839040 | 4.0 | R0.4 | 50.0 | 6.0 | 4 | 5.0 | 9.0 | 3.7 | 5 days | $76.40 | ||
| GM839080 | 8.0 | R0.8 | 60.0 | 8.0 | 4 | 10.0 | 18.0 | 7.4 | 5 days | $97.70 | ||
| GM839100 | 10.0 | R1.0 | 70.0 | 10.0 | 4 | 12.0 | 25.0 | 9.4 | Low stock | $114.00 | ||
| GM839120 | 12.0 | R1.2 | 80.0 | 12.0 | 4 | 15.0 | 30.0 | 11.4 | 5 days | $148.90 |
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- Specifications
- Operation
- Work Material
- Reviews
Product Description
X-POWER PRO 4 Flute 30° Helix Stub Corner Radius End Mill GM839 delivers rigid, precise milling. Advanced ‘Z Coating’ with an ultrafine micrograin carbide substrate supports long life in wet or dry cutting. It machines steels, stainless steel, cast iron, and hardened steels to 55 Rockwell with consistent accuracy. Diameters span 2–12 mm, with 20–30% longer life and over 20% faster cutting versus X-Power.
- 4 flutes with 30° helix for stable chip evacuation and smooth cutting
- Stub length for maximum rigidity in shallow features and slotting
- Corner radius edges reduce chipping and improve edge strength
- Advanced ‘Z Coating’ and ultrafine micrograin carbide extend tool life
- Performs in steels hardened steels to 55 Rockwell stainless steel and cast iron
- 2–12 mm diameter range with faster cutting and improved finish versus X-Power
Product Data
| Workpiece Material | P K H |
| Cutting Shape | Corner Radius |
| Hardened Steels(HRc40~45) | Excellent |
| Helix Angle | Square 30 |
| No. Flutes | 4 |
| Operation | Corner, Die Sinking, Facing, Helical-Interpol, Side Milling, Slotting, Small Part |
| Shank Type | Plain |
| Surface Treatment | YG-1 Y Coating |
| Tool Material | Carbide |
| Flutes | 4 |
| Helix Angle | 30° |
| Cutting Edge Shape | CORNER RADIUS |
| Size Min | D2.0 |
| Size Max | D12.0 |
| Length |
Stub Length |
| Coating | Y-Coating |
Side Milling
Small Part
Slotting
Die Sinking
Facing
Corner
Helical Interpol
Carbon Steels
Great
Good
Great
Excellent
Alloy Steels
Excellent
Good
Great
Excellent
Prehardened Steels
Excellent
Good
Great
Excellent
Cast Iron
Great
Good
Great
Excellent
Hardened Steels (HRc40~45)
Excellent
Good
Great
Excellent
Hardened Steels (HRc45~55)
Great
Good
Great
Excellent
