4-Flute · TiSiN · R2mm · HRC55 · Standard Reach

8mm 4-Flute R2mm TiSiN Solid Carbide Corner Radius End Millfor HRC55 Steel & Stainless

TiSiN-coated 4-flute corner radius end mills combine the rigidity of a square end mill with corner geometry that reduces stress concentration and micro-chipping on hardened surfaces up to HRC55. The corner radius distributes cutting load across a wider arc at entry, dramatically extending tool life versus sharp-corner tools in steel and stainless steel shoulder milling and semi-finish passes. TiSiN hardness > 3,500 HV resists abrasion at continuous contact conditions.

R2mmD1 8mmL2 30mmD2 8mmOAL 150mm4 FlutesTiSiNHRC55Standard ReachMOQ 1 pc

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Cena referencyjna

317,77 zł

Cena ref. fabryki (PLN)

wg kosztu pręta na 2026-03-31. Wycena końcowa może się różnić.

TiSiN · 4 Flute · HRC55

8mm 4F R2mm TiSiN

L2 30mm · D2 8mm · OAL 150mm

Standard Reach · HRC55

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✓ Factory direct pricing

✓ MOQ 1 piece, ships 1–5 days

✓ Custom radius in 0.1mm increments

Full Dimensions

Technical Specifications

Corner Radius2 mm
Cutter Diameter (D1 h7)8 mm
Flute Length (L2)30 mm
Shank Diameter (D2 h6)8 mm
Overall Length (L1)150 mm
Number of Flutes4
End GeometryCorner Radius (Bull Nose)
CoatingTiSiN Titanium Silicon Nitride
Max Material HardnessHRC55
Reach CategoryStandard (L1/D1 = 18.8×)
Helix Angle30°–35°
SubstrateK10/K20 Ultra-Fine Grain Carbide
Shank Toleranceh6
MOQ1 piece
Lead Time (standard)1–5 business days
Lead Time (custom)5–15 business days

TiSiN · 4 Flute · HRC55 · R2mm

8mm 4-flute R2mm TiSiN corner radius end mill — L2=30mm OAL=150mm
Corner R
2mm
D1 h7
8mm
L2
30mm
D2 h6
8mm
L1
150mm
Reach
Standard

R2mm Corner Geometry

Heavy-corner fillet for energy, marine, and structural components

  • ▸Produces R2mm fillets without interpolation — direct plunge-to-shoulder possible
  • ▸Widely used in wind turbine nacelle components and frame pockets
  • ▸Reduces stress concentration on R2mm structural fillets vs machined-in ball nose
  • ▸Long-reach variants for deep pocket access (L1 up to 150mm)
Radius Selection Tip: R2mm at this tool diameter means a significant portion of the cutting edge is curved. In HRC55 steel, reduce feed rate 10–15% vs R1mm to maintain consistent chip load across the radius. Trochoidal milling strategies work well for R2mm pocketing.

ø8mm Applications

8mm TiSiN — Where This Tool Fits

  • ▸Automotive component shoulder milling
  • ▸Pump body and valve pocket features
  • ▸Gearbox cover profiling
  • ▸Large mould runner channel machining
Machining Tip: ø8mm is the production sweet spot for corner radius end mills. In HRC55 steel, radial engagement can be 30–50% of D for profiling, with DOC up to 1×D for semi-finish passes. The corner radius reduces chatter significantly at this diameter.

Coating Performance

TiSiN on Corner Radius Geometry

  • ▸TiSiN hardness > 3,500 HV on curved corner arc geometry
  • ▸Prevents micro-chipping at re-entry in interrupted shoulder milling
  • ▸Low friction for reduced built-up edge in stainless steel shoulder cuts
  • ▸Dry, MQL, or flood coolant — all environments supported
ISO PISO MISO KTiSiN corner radius end mill4 flute bull nose end mill HRC55corner radius carbide end mill steelradius end mill semi-finish milling

Same Diameter & Radius, Different Reach

ø8mm R2mm TiSiN · 4 Flute · HRC55 — Other Flute Lengths

L2 20mm
OAL 60mm · Standard
L2 25mm
OAL 75mm · Standard
L2 35mm
OAL 100mm · Standard

Same ø8mm Diameter, Other Radii

TiSiN · 4 Flute · HRC55 — Other Corner Radii at ø8mm

R0.2mm
L2 20mm
R0.3mm
L2 20mm
R0.5mm
L2 20mm
R1mm
L2 20mm
R1.5mm
L2 20mm

Same Dimensions, Other Coatings

ø8mm R2mm / L2 30mm — Other Variants

nACo · 4 Flute · HRC65
nACo · 4 Flute · HRC65
HRC65 · 4F · R2mm
Uncoated · 4 Flute · Aluminium
Uncoated · 4 Flute · Aluminium
Non-Ferrous · 4F · R2mm
ø8mm R2mm / L2 25mm← All Corner Radius End Millsø8mm R2mm / L2 35mm

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Factory direct. MOQ 1 piece. Pricing confirmed within 4 hours.

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