X5070 Multi Flute 45°Helix Ex-Long End Mill (G8D64)

6&8-Flute Ball Nose for HRc45–70

X5070 Multi Flute 45°Helix Ex-Long End Mill (G8D64)
$117.81 INC GST $107.10 EX GST
SKU
G8D64060
Work materials
PH

Key features

  • Use hydraulic, shrink, HP3/GSK, or power milling chucks
  • Dry machining in steels and hardened steels < HRc70
  • High abrasion resistance; negative rake angle; strong negative land
Tool material Carbide
Surface treatment YG-1 Blue Coating
Mill Diameter (mm)
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SKUMill Diameter (mm)Overall length (mm)Shank dia. (mm)FlutesLength of cut (mm)Stock Price Qty Add
G8D640606.070.06.0626.0 1-2 Weeks $107.10
G8D640808.090.08.0636.0 Low stock $139.70
G8D6410010.0100.010.0646.0 1-2 Weeks $227.10
G8D6412012.0110.012.0656.0 1-2 Weeks $308.70
G8D6416016.0130.016.0666.0 1-2 Weeks $622.40
G8D6420020.0140.020.0876.0 1-2 Weeks $842.70
G8D6425025.0180.025.0892.0 1-2 Weeks $1,261.00

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  • Overview
  • Specifications
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Product Description

X5070 Multi Flute 45° Helix Ex-Long End Mill (G8D64) is a 6&8-Flute Ball Nose for HRc45–70. It uses a nanograin carbide substrate with blue silicone based coating for dry machining to 1400°c. The long length 45° helix and strong negative land deliver feed rates, surface finish, and tool life. Suitable for steels, heat resistant steels, and hardened steels up to HRc70, including trochoidal machining.

  • Use hydraulic, shrink, HP3/GSK, or power milling chucks
  • Dry machining in steels and hardened steels < HRc70
  • High abrasion resistance; negative rake angle; strong negative land
  • 45° Helix Angle; mirror surface finish
  • Diameters 6mm–25mm; plain shank
Product Data
Workpiece Material P H
Cutting Shape Ball Nose, Square
Hardened Steels(HRc40~45) Great
Helix Angle Square 45
Length Extended Neck, Extra Long
No. Flutes 6 & 8
Operation Facing, Side Milling, Small Part, Trochoidal
Shank Type Plain
Surface Treatment YG-1 Blue Coating
Tool Material Carbide
Flutes 6&8
Helix Angle 45°
Cutting Edge Shape Ball Nose
Size Min D6.0
Size Max D25.0
Length

Extended Neck
Coating Blue Coating

Side Milling
Small Part
Facing
Trochoidal

Work materials

VDI 3323 recommendations for this tool.

ExcellentGood

Steel

4 grades
Non-alloy steel
GoodVDI 5
Low-alloy steel
GoodVDI 8–9
High-alloy and tool steel
GoodVDI 11

Hardened materials

4 grades
Hardened steel
ExcellentVDI 38–39
Chilled cast iron
GoodVDI 40
Hardened cast iron
ExcellentVDI 41
VDI grade reference8 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.
5PNon-alloy steelGood30032
8PLow-alloy steelGood30032
9PLow-alloy steelGood35038
11PHigh-alloy and tool steelGood32535
38HHardened steelExcellent55055
39HHardened steelExcellent63060
40HChilled cast ironGood40042
41HHardened cast ironExcellent55055

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.

Video

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