4G MILL 2 Flute 30°Helix Rib Ball End Mill (SEM846)
Extended-Neck Ball Nose End Mill for Rib Processing
- SKU
- SEM84601804E
Key features
- Solid carbide ball nose end mill for precision rib processing
- Two-flute geometry with a 30° helix angle
- Extended neck design for the SEM846 series
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Precision rib profiles
Ball nose geometry supports detailed rib processing and contoured milling work.
Extended-neck access
Extended neck geometry suits applications requiring a longer reach tool profile.
Steel machining capability
Designed for high-speed cutting of pre-hardened steels up to HRc55.
| SKU | Mill Diameter (mm) | Ball Nose Radius (mm) | Overall length (mm) | Shank dia. (mm) | Length of cut (mm) | Length below shank (mm) | Neck dia. (mm) | Stock | Price | Qty | Add |
|---|---|---|---|---|---|---|---|---|---|---|---|
| SEM84600101E | 0.1 | R0.05 | 40.0 | 4.0 | 0.1 | 1.0 | 0.085 | 1-2 Weeks | $142.90 | ||
| SEM84600201E | 0.2 | R0.1 | 40.0 | 4.0 | 0.2 | 1.0 | 0.17 | 1-2 Weeks | $137.20 | ||
| SEM84600301E | 0.3 | R0.15 | 40.0 | 4.0 | 0.3 | 1.0 | 0.27 | 1-2 Weeks | $108.20 | ||
| SEM84600401E | 0.4 | R0.2 | 40.0 | 4.0 | 0.4 | 1.0 | 0.37 | 1-2 Weeks | $88.00 | ||
| SEM84600502E | 0.5 | R0.25 | 45.0 | 4.0 | 0.5 | 2.0 | 0.45 | 1-2 Weeks | $94.70 | ||
| SEM84600601E | 0.6 | R0.3 | 45.0 | 4.0 | 0.6 | 1.0 | 0.55 | 1-2 Weeks | $73.20 | ||
| SEM84600702E | 0.7 | R0.35 | 45.0 | 4.0 | 0.7 | 2.0 | 0.65 | 1-2 Weeks | $100.00 | ||
| SEM84600801E | 0.8 | R0.4 | 45.0 | 4.0 | 0.8 | 1.0 | 0.75 | 1-2 Weeks | $73.20 | ||
| SEM84600904E | 0.9 | R0.45 | 45.0 | 4.0 | 0.9 | 4.0 | 0.85 | 1-2 Weeks | $73.20 | ||
| SEM84601002E | 1.0 | R0.5 | 50.0 | 4.0 | 1.0 | 2.0 | 0.95 | In stock | $87.70 | ||
| SEM84601204E | 1.2 | R0.6 | 50.0 | 4.0 | 1.2 | 4.0 | 1.15 | 1-2 Weeks | $64.20 | ||
| SEM84601406E | 1.4 | R0.7 | 50.0 | 4.0 | 1.4 | 6.0 | 1.35 | 1-2 Weeks | $64.20 | ||
| SEM84601503E | 1.5 | R0.75 | 50.0 | 4.0 | 1.5 | 3.0 | 1.45 | In stock | $87.70 | ||
| SEM84601604E | 1.6 | R0.8 | 50.0 | 4.0 | 1.6 | 4.0 | 1.55 | 1-2 Weeks | $64.20 | ||
| SEM84601804E | 1.8 | R0.9 | 50.0 | 4.0 | 1.8 | 4.0 | 1.75 | 1-2 Weeks | $64.20 | ||
| SEM84602004E | 2.0 | R1.0 | 50.0 | 4.0 | 2.0 | 4.0 | 1.95 | 1-2 Weeks | $64.20 | ||
| SEM84602508E | 2.5 | R1.25 | 50.0 | 4.0 | 2.5 | 8.0 | 2.4 | 1-2 Weeks | $64.20 | ||
| SEM84603006E | 3.0 | R1.5 | 50.0 | 6.0 | 3.0 | 6.0 | 2.85 | 1-2 Weeks | $72.60 | ||
| SEM84604008E | 4.0 | R2.0 | 50.0 | 6.0 | 4.0 | 8.0 | 3.85 | 1-2 Weeks | $72.60 | ||
| SEM84605015E | 5.0 | R2.5 | 60.0 | 6.0 | 6.0 | 15.0 | 4.85 | 1-2 Weeks | $75.00 | ||
| SEM84606020E | 6.0 | R3.0 | 60.0 | 6.0 | 8.0 | 20.0 | 5.85 | 1-2 Weeks | $102.30 | ||
| SEM84608025E | 8.0 | R4.0 | 70.0 | 8.0 | 10.0 | 25.0 | 7.7 | 1-2 Weeks | $116.10 | ||
| SEM84610030E | 10.0 | R5.0 | 75.0 | 10.0 | 12.0 | 30.0 | 9.7 | 1-2 Weeks | $206.70 | ||
| SEM84612032E | 12.0 | R6.0 | 80.0 | 12.0 | 14.0 | 32.0 | 11.7 | 1-2 Weeks | $204.00 |
Add 4G MILL 2 Flute 30°Helix Rib Ball End Mill (SEM846) to comparison
View Comparison- Overview
- Specifications
- Work Material
- Reviews
YG-1 4G Mill SEM846 is a two-flute, 30° helix rib ball end mill with extended neck geometry. This solid carbide milling cutter is intended for high-speed cutting of pre-hardened steels up to HRc55. The ball nose cutting edge is suited to precision rib processing and contoured milling operations. Y-Coating supports the SEM846 series for carbon steels, alloy steels, stainless steels and cast iron. Two flutes and a 30° helix provide the specified geometry for this series. The range spans 0.1 mm to 12 mm diameters, with radii from R0.05 to R6.0. Select the required SEM846 variant for extended-neck ball nose milling in compatible materials.
- Solid carbide ball nose end mill for precision rib processing
- Two-flute geometry with a 30° helix angle
- Extended neck design for the SEM846 series
- Y-Coating for steel, stainless steel and cast iron machining
- Suitable for high-speed cutting of pre-hardened steels up to HRc55
- Diameter range from 0.1 mm to 12 mm with R0.05 to R6.0 radii
| Cutting Shape | Ball Nose |
| No. Flutes | 2 |
| Tool Material | Carbide |
Work materials
VDI 3323 recommendations for this tool.
Steel
11 gradesHardened materials
3 gradesCast iron
6 gradesVDI grade reference20 grades+
Individual grade ratings and nominal hardness references. Base grades and decimal subgrades are listed separately.
| VDI | Work material | Recommendation | HB ref. | HRC ref. |
|---|---|---|---|---|
| 1 | PNon-alloy steel | Good | 125 | - |
| 2 | PNon-alloy steel | Good | 190 | 13 |
| 3 | PNon-alloy steel | Good | 250 | 25 |
| 4 | PNon-alloy steel | Excellent | 270 | 28 |
| 5 | PNon-alloy steel | Excellent | 300 | 32 |
| 6 | PLow-alloy steel | Good | 180 | 10 |
| 7 | PLow-alloy steel | Excellent | 275 | 29 |
| 8 | PLow-alloy steel | Excellent | 300 | 32 |
| 9 | PLow-alloy steel | Excellent | 350 | 38 |
| 10 | PHigh-alloy and tool steel | Good | 200 | 15 |
| 11 | PHigh-alloy and tool steel | Excellent | 325 | 35 |
| 15 | KGrey cast iron | Good | 180 | 10 |
| 16 | KGrey cast iron | Good | 260 | 26 |
| 17 | KNodular cast iron | Good | 160 | 3 |
| 18 | KNodular cast iron | Good | 250 | 25 |
| 19 | KMalleable cast iron | Good | 130 | - |
| 20 | KMalleable cast iron | Good | 230 | 21 |
| 38 | HHardened steel | Good | 550 | 55 |
| 40 | HChilled cast iron | Excellent | 400 | 42 |
| 41 | HHardened cast iron | Good | 550 | 55 |
No grades match your search.
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.
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