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3/4" Dia, 7 Flute, Chip Breaker Square End Mill - 77278

SERIES: 77R

H-Carb

3/4" Dia, 3" LOC, 3/4" Shank Dia, 7 Flute, 37 Degree Helix, Ti-NAMITE-A (AlTiN) Coated, Series 77S, H-Carb, Chip Breaker Square End Mill - 77278

Feature & Benefits

  • Specializes in deep axial trochoidal and high-speed milling applications
  • Optimized core improves rigidity, chip flow and reduces deflection
  • Chip Breaker design breaks up chips from the long flute length allowing for better chip flow and evacuation in deep pocketing operations

SKU / EDP77278
CategorySolid Round Tools > Milling > High Performance End Mills
Min Order Qty1
Series77R
Series DescriptionH-Carb
High PerformanceYes
End ConfigurationChip Breaker (Square)
Tool LengthExtra Long
Unit (inch/mm)inch
Number of Flutes7
Primary Workpiece Material(P) Steel|(M) Stainless Steel|(K) Cast Iron|(S) High Temp Alloy
Secondary Workpiece Material(H) Hardened Materials
Cutting Diameter (DC) (Decimal Inch)0.7500
Cutting Diameter (DC) (Fractional Inch)3/4
Cutting Diameter (DC) (mm)19.05
Shank Diameter (DCON) (Decimal Inch)0.7500
Shank Diameter (DCON) (Fractional Inch)3/4
Shank Diameter (DCON) (mm)19.05
Length of Cut (APMX) (Decimal Inch)3.0000
Length of Cut (APMX) (Fractional Inch)3
Length of Cut (APMX) (mm)76.20
Overall Length (LF) (Decimal Inch)5.2500
Overall Length (LF) (Fractional Inch)5-1/4
Overall Length (LF) (mm)133.35
Non-Cutting Center Diameter (NCD) (Decimal Inch)0.2535
Non-Cutting Center Diameter (NCD) (mm)6.44
Cutting Diameter (DC) Tolerance (Decimal Inch)+0.0000/-0.0020
Cutting Diameter (DC) Tolerance (mm)+0.000/-0.050
Shank Diameter (DCON) Tolerance (ISO)h6
Shank Diameter (DCON) Tolerance (Decimal Inch)+0.0000 / -0.00051
Shank Diameter (DCON) Tolerance (mm)+0.0000 / -0.0013
Shank TypeStraight
Weldon FlatNo
Coolant OptionExternal Coolant
Coating DescriptionAlTiN (Ti-NAMITE-A)
Additional GeometryChip Breaker / Right Hand Cut Direction (RHC)
Rake AnglePositive
Helix AngleRight Spiral
Helix Angle (Degree)37
Variable HelixNo
Center CuttingNo
Chip BreakerYes

Alternative Products SKU / EDP to 77278
Series_77S_TA.jpg

3/4" Dia, 7 Flute, Square End End Mill - 77276

SGS 3/4" Dia, 3" LOC, 3/4" Shank Dia, 7 Flute, 37 Degree Helix, Ti-NAMITE-A (AlTiN) Coated, Series 77S, H-Carb, Square End End Mill - 77276

Series_77SQ_TM.jpg

3/4" Dia, 7 Flute, Square End End Mill - 77277

SGS 3/4" Dia, 3" LOC, 3/4" Shank Dia, 7 Flute, 37 Degree Helix, Ti-NAMITE-M (TM) Coated, Series 77S, H-Carb, Square End End Mill - 77277

Series_77SCB_TM.jpg

3/4" Dia, 7 Flute, Chip Breaker Square End Mill - 77279

SGS 3/4" Dia, 3" LOC, 3/4" Shank Dia, 7 Flute, 37 Degree Helix, Ti-NAMITE-M (TM) Coated, Series 77S, H-Carb, Chip Breaker Square End Mill - 77279

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