Miniature End Mills Speeds & Feeds

These end mills are designed to machine most materials, however, because of their small size, feeds and speeds are very material specific. Care must be taken not to over feed as breakage may result.

These tools offer a very short length of cut so that unnecessary extension, which often causes deflection and breakage, can be avoided. These end mills are designed to cut difficult and abrasive materials, ranging from medium to the highest hardness levels machinable by Carbide End Mills.

They can be used for general purpose milling including profiling, slotting, keyways and pockets.

Double variable helix design reduces chatter and harmonics, better finish, and increases material removal rates
Corner radius for improved strength
AlTiN, Stealth and Xtreme coatings for improved lubricity and heat resistance
Better than h6 shank tolerance for shrink fit holders

Remember to consider the Torque Efficiency of your CNC machine.
The correct toolholder will improve production and reduce cycle time.
Climb Milling is recommended.

Cobra Miniatures, Variable Helix
2 Flute, 37 ̊ Helix - Stub, Length of Cut = 1-1/2 x Diameter
4 Flute, 37 ̊ Helix - Stub, Length of Cut = 1-1/2 x Diameter
2 Flute, 37 ̊ Helix - Square End, Length of Cut = 3 x Diameter
4 Flute, 37 ̊ Helix - Square End, Length of Cut = 3 x Diameter

Helix:
Diameter: -0.0001" to -0.0003"
Shank Diameter: +0.000" to -0.0003"

Raptor Miniatures, Variable Helix with Radius – 38° Helix
3 Flute, Raptor DVH, Square End with Radius

Helix: 38 Degree
Diameter: -0.000" to -0.002"
Shank Diameter: +0.000" to -0.0003"

Raptor Miniatures, Variable Helix with Radius - 3/16 Shank
4 Flute , Raptor DVH, Square End with Radius

Helix: 38 Degree
Diameter: -0.000" to -0.002"
Shank Diameter: +0.000" to -0.0003"

Viper Miniatures with 3/16 Shank
2 Flute, Square End
3 Flute, Square End

Helix: 45 degrees
Diameter: -0.0001" to -0.0003"
Shank Diameter: +0.000" to -0.0003

Miniature Speeds & Feeds for "N" Aluminum

You can also find this chart on Page 57 of our catalog

Miniature Speeds & Feeds for "P" Steel

You can also find this chart on Page 57 of our catalog

Miniature Speeds & Feeds for "S" High Temp Alloys

You can also find this chart on Page 57 of our catalog

Imperial
SFM = RPM X .262 X Tool Diameter
RPM = SFM X 3.82 ÷ Tool Diameter
IPM = RPM X IPT (CLPT) X Number of Flutes
IPT = IPM ÷ (RPM X Number of Flutes)
MRR = RDC X ADC X IPM (a.k.a. CIM)

Metric
SMM = RPM X .00314 X Tool Diameter
RPM = SMM X 318.057 / Tool Diameter

Milling Speed and Feed Calculator