RobbJack
1/4in" 3-Flute Solid Carbide Ball End Mill - RobbJack SB-301-08
MFR# SB-301-08Series SB-301
$55.48List $60.32
Save 8%
In stock - ships in 1-3 business days
Request a quote
- Fast sourcing
- Regrinding available
- 20+ yrs expertise
Diameter1/4in
Flutes3
MaterialSolid Carbide
Description
The RobbJack SB-301-08 is a 1/4in 3-flute Solid Carbide ball end mill. Suited for cast iron, non-ferrous metal. 5/16in length of cut, 2-1/2in overall length. Series SB-301.
Specifications
Additional information3 Flute Ball End Stub Length Metric Tuffy Grade Carbide End Mill
ChipbreakerNo
Coolant throughNo
Cutting directionRight Hand
End mill materialSolid Carbide
Extended reachNo
Flute directionRight Hand
Flute typeHelical
Helix angle30
Helix styleMedium
Length of cut in5/16in
Length typeStub
Manufacturers catalog numberSB-301-08
Material removal typeRoughing & Finishing
Mill diameter in1/4in
Mill diameter tolerance+0.0000/ 0.0020 in
Neck length0.0000
Nose radius0.1250
Number of flutes3
Overall length in2-1/2in
Overall length tolerance+0.0600/-0.0600 in
Primary workpiece materialCast Iron; Non-Ferrous Metal
Reach length0.3125
Shank diameter in1/4in
Shank diameter tolerance0.0001/ 0.0002 in
Shank typeStraight-Cylindrical
Single or double endSingle
System of measurementFractional Inch
Variable helixNo
Variable indexNo
Can't find your exact tool?Send us a part number — we'll cross-reference it.
Dull tools?Regrinding extends tool life and saves cost.
Alternate & equivalent tools
Matched on diameter, flute count, and material. Need a specific brand or coating? Cross-reference this tool.
Spec-matched alternates load as the catalog fills in. Meanwhile, browse the End Mills collection and filter by diameter, flutes & length of cut.