(GMG55) V7 Plus Carbide, 4Flute Multi Helix Ball Bose End Mill, Long length, Plain Shank

Long-length four-flute carbide ball nose end mill

(GMG55) V7 Plus Carbide, 4Flute Multi Helix Ball Bose End Mill, Long length, Plain Shank
$59.05 INC GST $53.69 EX GST
SKU
GMG55040
Work materials
PMKS

Key features

  • Carbide four-flute ball nose end mill
  • Long-length design with a plain shank
  • 35°/37° multiple helix geometry
Mill Diameter (mm)
Ball Nose Radius (mm)
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Reduced vibration

Special flute geometry and a multiple helix help minimise vibration during machining.

Material versatility

Designed for stainless steels, mild steels, cast iron and materials under HRc40.

Extended reach

Long-length construction supports milling applications where additional tool reach is needed.

SKUMill Diameter (mm)Ball Nose Radius (mm)Overall length (mm)Shank dia. (mm)Length of cut (mm)Stock Price Qty Add
GMG550404.0R2.057.06.011.0 In stock $53.69
GMG550505.0R2.557.06.013.0 Low stock $53.69
GMG550606.0R3.057.06.013.0 Low stock $53.69
GMG550808.0R4.063.08.019.0 In stock $75.28
GMG5510010.0R5.072.010.022.0 In stock $118.45
GMG5512012.0R6.083.012.026.0 In stock $143.63
GMG5516016.0R8.092.016.032.0 Low stock $237.46
GMG5520020.0R10.0104.020.038.0 Low stock $426.64

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  • Overview
  • Specifications
  • Work Material
  • Speeds & Feeds
  • Reviews
Application
Product Description

YG-1 GMG55 V7 Plus is a carbide four-flute ball nose end mill with a long-length plain shank. It uses special flute geometry and a 35°/37° multiple helix to help eliminate machining vibrations. Designed for milling, it delivers excellent performance on stainless steels, mild steels and cast iron. It also suits low and medium hardness materials under HRc40. The long-length format supports applications requiring additional tool reach. GMG55 identifies the plain-shank version within the V7 Plus ball nose family. Available selections cover R2.0 to R10.0 ball radii and 4 to 20 mm diameters. Each listed SKU has four flutes, with lengths of cut from 11 to 38 mm.

  • Carbide four-flute ball nose end mill
  • Long-length design with a plain shank
  • 35°/37° multiple helix geometry
  • Special flute geometry helps eliminate vibrations
  • Suitable for stainless steels mild steels and cast iron
  • R2.0 to R10.0 ball radii in listed selections
Product Data
Cutting Shape Ball Nose
Length Long
No. Flutes 4
EDP No. Radius (R) Mill Diameter (D1) ShankDia (D2) Length of Cut (L1) Overall Length (L2) Mill Dia. Tolerance Shank Dia. Tolerance No. of Flute GMG55030 R1.5 3 6 8 57 0~-0.02 h5 4 GMG55040 R2.0 4 6 11 57 0~-0.02 h5 4 GMG55050 R2.5 5 6 13 57 0~-0.02 h5 4 GMG55060 R3.0 6 6 13 57 0~-0.02 h5 4 GMG55080 R4.0 8 8 19 63 0~-0.02 h5 4 GMG55100 R5.0 10 10 22 72 0~-0.02 h5 4 GMG55120 R6.0 12 12 26 83 0~-0.02 h6 4 GMG55160 R8.0 16 16 32 92 0~-0.030 h6 4 GMG55200 R10.0 20 20 38 104 0~-0.030 h6 4 GMG55250 R12.5 25 25 38 104 0~-0.030 h6 4

Work materials

VDI 3323 recommendations for this tool.

ExcellentGood

Steel

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

Cast iron

6 grades
Grey cast iron
ExcellentVDI 15–16
Nodular cast iron
ExcellentVDI 17–18
Malleable cast iron
ExcellentVDI 19–20

Stainless steel

3 grades
Stainless steel
ExcellentVDI 12–14

Superalloys & titanium

7 grades
Heat-resistant superalloys
GoodVDI 31–35
Titanium alloys
GoodVDI 36–37
VDI grade reference27 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 steelExcellent125-
2PNon-alloy steelExcellent19013
3PNon-alloy steelExcellent25025
4PNon-alloy steelExcellent27028
5PNon-alloy steelExcellent30032
6PLow-alloy steelExcellent18010
7PLow-alloy steelExcellent27529
8PLow-alloy steelExcellent30032
9PLow-alloy steelExcellent35038
10PHigh-alloy and tool steelExcellent20015
11PHigh-alloy and tool steelExcellent32535
12MStainless steelExcellent20015
13MStainless steelExcellent24023
14MStainless steelExcellent18010
15KGrey cast ironExcellent18010
16KGrey cast ironExcellent26026
17KNodular cast ironExcellent1603
18KNodular cast ironExcellent25025
19KMalleable cast ironExcellent130-
20KMalleable cast ironExcellent23021
31SHeat-resistant superalloysGood20015
32SHeat-resistant superalloysGood28030
33SHeat-resistant superalloysGood25025
34SHeat-resistant superalloysGood35038
35SHeat-resistant superalloysGood32034
36STitanium alloysGood--
37STitanium alloysGood--

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.

Cutting Speeds and Feeds

Select the operation, workpiece material and tool diameter to calculate the recommended cutting parameters for this product.

Machining calculator

Cutting speeds and feeds for (GMG55) V7 Plus Carbide, 4Flute Multi Helix Ball Bose End Mill, Long length, Plain Shank

Choose the machining conditions below, then calculate the recommended spindle speed and feed rate.

Recommended parameters

Parameter Value Unit
Spindle speed – rev/min
Feed rate – mm/min
Cutting speed (Vc) – m/min
Feed per tooth (fz) – mm/tooth

Choose your options and calculate the recommended parameters.

EDP No. Radius (R) Mill Diameter (D1) ShankDia (D2) Length of Cut (L1) Overall Length (L2) Mill Dia. Tolerance Shank Dia. Tolerance No. of Flute GMG55030 R1.5 3 6 8 57 0~-0.02 h5 4 GMG55040 R2.0 4 6 11 57 0~-0.02 h5 4 GMG55050 R2.5 5 6 13 57 0~-0.02 h5 4 GMG55060 R3.0 6 6 13 57 0~-0.02 h5 4 GMG55080 R4.0 8 8 19 63 0~-0.02 h5 4 GMG55100 R5.0 10 10 22 72 0~-0.02 h5 4 GMG55120 R6.0 12 12 26 83 0~-0.02 h6 4 GMG55160 R8.0 16 16 32 92 0~-0.030 h6 4 GMG55200 R10.0 20 20 38 104 0~-0.030 h6 4 GMG55250 R12.5 25 25 38 104 0~-0.030 h6 4

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