

HSS-CO Long Roughing End Mill (Knuckle Profile) 6306 LRE
NACHI 6306 LRE is the long-flute option in the uncoated fine-pitch roughing family. Flute length 55~140mm reaches deepest; diameters start at 12mm, so look to 6302 SRE or 6304 MRE for smaller sizes.
Specifications (16 items)
| Part No. | Dia. | Flute length | Overall length | Shank dia. | Flutes |
|---|---|---|---|---|---|
| AVQNALRE12 | 12 | 55 | 105 | 12 | 4 |
| AVQNALRE14 | 14 | 55 | 110 | 16 | 4 |
| AVQNALRE15 | 15 | 65 | 120 | 16 | 4 |
| AVQNALRE16 | 16 | 65 | 120 | 16 | 4 |
| AVQNALRE18 | 18 | 65 | 130 | 20 | 4 |
| AVQNALRE20 | 20 | 75 | 140 | 20 | 4 |
| AVQNALRE22 | 22 | 75 | 140 | 20 | 4 |
| AVQNALRE24 | 24 | 90 | 160 | 25 | 4 |
| AVQNALRE25 | 25 | 90 | 160 | 25 | 4 |
| AVQNALRE28 | 28 | 90 | 160 | 25 | 4 |
| AVQNALRE30 | 30 | 105 | 190 | 32 | 4 |
| AVQNALRE32 | 32 | 105 | 190 | 32 | 5 |
| AVQNALRE35 | 35 | 115 | 200 | 32 | 5 |
| AVQNALRE40 | 40 | 125 | 210 | 32 | 5 |
| AVQNALRE45 | 45 | 130 | 230 | 42 | 6 |
| AVQNALRE50 | 50 | 140 | 250 | 42 | 6 |
Specification Range
| Diameter | 12~50mm |
|---|---|
| Flute length | 55~140mm |
| Overall length | 105~250mm |
| Shank diameter | 12~42mm |
Product Description
NACHI 6306 LRE is the long-flute option in the uncoated fine-pitch roughing family. Flute length 55~140mm reaches deepest; diameters start at 12mm, so look to 6302 SRE or 6304 MRE for smaller sizes. It is made from cobalt high speed steel (HSS-CO), uncoated. Sizes cover diameter 12~50mm, flute length 55~140mm, overall length 105~250mm, shank diameter 12~42mm, 4~6 flutes, 16 in total, made in Japan. Overall length to 250mm with four to six flutes by diameter. It suits carbon and alloy steel, copper, aluminium and other non-ferrous metals with workpiece hardness up to HRC35. Typical uses: deep cavity roughing and single-pass deep sidewalls. The family also includes the short-flute 6302 SRE and the medium 6304 MRE, both starting at 6mm diameter; the knuckle-tooth long-flute option is 6368 SLHV (flute length 15~145mm). Are diameters below 12mm available? No - this one runs 12~50mm; for smaller sizes use 6302 SRE or 6304 MRE.
Workpiece Materials & Hardness
- Steel (P)
- Non-ferrous metals (N)
Max. workpiece hardness HRC35
Tags
- Roughing End Mill
- Fine Pitch Roughing End Mill
- Long Flute
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