Miniature Carbide Square End Mills
With a mill diameter less than 1/8" or 3 mm, these end mills are great for precise, detailed work such as in electronics, mold making, and medical-device manufacturing. They have a square end for milling square-bottomed slots, pockets, and edges. All are center cutting, allowing plunge cuts into a surface.
Made of solid carbide, these end mills are harder, stronger, and more wear resistant than high-speed steel and cobalt steel for the longest life and best finish. Their extreme hardness means they are brittle, so a highly rigid setup, such as a CNC machine, is necessary to prevent the end mill from breaking.
End mills with fewer flutes provide better chip clearance for high-volume, high-speed plunge, slotting, and roughing cuts; end mills with more flutes provide a finer finish and operate with less vibration when run at high speeds.
Use uncoated end mills for general purpose milling and short production runs. They stay sharper than coated end mills when used on soft materials like aluminum, leaving a better finish.
| Mill Dia. | Shank Dia. | Lg. of Cut | O'all Lg. | Flute Spacing | Helix Angle | For Use On | End Mill Type | Each | |
Uncoated | |||||||||
|---|---|---|---|---|---|---|---|---|---|
2 Flute | |||||||||
| 0.2mm | 3mm | 0.4mm | 38mm | Equal | 30° | Aluminum, Brass, Bronze, Iron, Nickel, Plastic, Stainless Steel, Steel, Titanium, Tool Steel | Center Cutting | 0000000 | 000000 |
Carbide Square End Mills for Carbon Fiber, Fiberglass, and Graphite
A diamond or diamondlike coating on these end mills makes them good for machining abrasive material, such as carbon fiber, fiberglass, and graphite. Made of solid carbide, these end mills are harder, stronger, and more wear resistant than high-speed steel and cobalt steel for the longest life and best finish on hard material. Their extreme hardness means they are brittle, so a highly rigid setup, such as a CNC machine, is necessary to prevent the end mill from breaking. They have a square end for milling square-bottomed slots, pockets, and edges. All are center cutting, allowing plunge cuts into a surface.
End mills with fewer flutes provide better chip clearance for high-volume, high-speed plunge, slotting, and roughing cuts; end mills with more flutes provide a finer finish and operate with less vibration when run at high speeds.
Diamond-coated end mills are good for long production runs. They run twice as fast as other carbide end mills and last up to 30 times longer.
| Mill Dia. | Shank Dia. | Lg. of Cut | Overall Lg. | Flute Spacing | Helix Angle | For Use On | End Mill Type | Each | |
Diamond Coated | |||||||||
|---|---|---|---|---|---|---|---|---|---|
2 Flute | |||||||||
| 0.2mm | 3mm | 0.3mm | 40mm | Equal | 30° | Carbon Fiber, Fiberglass, Graphite | Center Cutting | 00000000 | 0000000 |
Carbide Ball End Mills for Carbon Fiber, Fiberglass, and Graphite
| Mill Dia. | Shank Dia. | Lg. of Cut | Overall Lg. | Flute Spacing | Helix Angle | For Use On | End Mill Type | Each | |
Diamond Coated | |||||||||
|---|---|---|---|---|---|---|---|---|---|
2 Flute | |||||||||
| 0.2mm | 4mm | 0.4mm | 40mm | Equal | 30° | Carbon Fiber, Fiberglass, Graphite | Center Cutting | 0000000 | 0000000 |
Carbide Ball End Mills for Tool Steel, Hardened Steel, and Iron
Flutes have a low helix angle to provide the cutting forces required for difficult-to-machine material, such as hardened steel and iron. Made of solid carbide, these end mills are harder, stronger, and more wear resistant than high-speed steel and cobalt steel for the longest life and best finish on hard material. Their extreme hardness means they are brittle, so a highly rigid setup, such as a CNC machine, is necessary to prevent the end mill from breaking. They have a ball end for milling rounded slots, slopes, and contours. All are center cutting, allowing plunge cuts into a surface.
An aluminum-titanium-nitride (AlTiN) or aluminum-chromium-nitride (AlCrN) coating allows them to dissipate heat better than other end mills, especially at high speeds. At high temperatures, the coating creates a layer of aluminum oxide that transfers heat to the chips, keeping the tool cool, even when used without lubrication. This makes these good for aggressive machining while roughing or making interrupted cuts.
For technical drawings and 3-D models, click on a part number.
For Max. Hardness Rockwell C63 | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Mill Dia. | Shank Dia. | Lg. of Cut | Overall Lg. | Flute Spacing | Helix Angle | For Use On | End Mill Type | Each | |
Aluminum Chromium Nitride (AlCrN) Coated | |||||||||
2 Flute | |||||||||
| 0.2mm | 4mm | 0.15mm | 45mm | Equal | 30° | Tool Steel, Hardened Steel, Iron | Center Cutting | 00000000 | 0000000 |
Cubic Boron Nitride Ball End Mills for Tool Steel and Hardened Steel
Make finishing cuts in tool steel and hardened steel with these cubic boron nitride (CBN) end mills. Harder than carbide end mills, they’re better for making small, precise cuts and last more than five times as long. And while they’re not as hard as diamond end mills, they dissipate heat much better. These end mills have a 0° helix angle for increased rigidity, helping to prevent chipping and ensuring more precise cuts. Deep chip pockets remove small chips for greater precision and to prevent surface roughening.
Because they’re brittle, these end mills require a highly rigid setup such as a CNC machine to prevent them from breaking. It’s also recommended that they’re used with oil coolant.
For technical drawings and 3-D models, click on a part number.
Neck | For Max. Hardness Rockwell C70 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Mill Diameter, mm | Shank Diameter, mm | Diameter, mm | Length, mm | Length of Cut, mm | Overall Length, mm | Flute Spacing | Helix Angle | For Use On | End Mill Type | Each | |
Uncoated | |||||||||||
2 Flute | |||||||||||
| 0.2 | 4 | 0.19 | 0.15 | 0.15 | 50 | Equal | 0° | Hardened Steel, Tool Steel | Center Cutting | 0000000 | 0000000 |