END MILLS

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HAAS END MILL SERIES

Haas End Mill Series

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High-Efficiency Performance Milling (HEPM) 

HEPM series milling cutters are designed for side-cutting and trochoidal toolpaths only. High-efficiency milling and high-speed milling toolpaths subject the end mill to a light radial depth of cut (Ae) and heavy axial depth of cut (Ap) at high feedrates, with reduced tool stepover for more radial passes. This dramatically increases the material removal rate, while decreasing cutting pressure, reducing and dispersing heat, reducing tool wear, and improving surface finish.

Constructed of premium-grade micrograin carbide, these 6-flute end mills feature a 45° helix angle for higher productivity and longer tool life, and unequal flute indexing to reduce harmonic vibrations (chatter) and improve surface finishes. These tools utilize a unique chip splitter that reduces chip length by up to two-thirds. Combined with chip thinning, high-efficiency milling, and high-speed machining toolpaths, these tools provide superior chip evacuation to carry heat away from the tool and workpiece.

Aluminum Chromium Nitride (Hybrid AlCrN) reduces wear and increases heat resistance. These end mills are ideal for high-speed machining and high-efficiency milling of steels, stainless steels, cast iron, and high-temp alloys for increased material removal rates and fine surface finishes.

High-Speed Performance Milling 1 (HSPM1) 
HSPM1 series milling cutters feature unequal flute spacing (variable pitch) to reduce or eliminate unwanted harmonic vibrations, commonly known as chatter. The 4-flute end mills feature a 38° helix angle on the flute geometry and chamfers on the cutting edges to guard against chipping and premature wear of the edges in roughing applications. The end mills are center cutting, but the HSPM1 chamfer mills are not designed for cutting with the sharp center point of the tool.

Titanium Aluminum Nitride (TiAlN) coating increases the resistance to wear, ductility, and heat transfer through the chips, making these cutters a good all-around choice for roughing and finishing steel, stainless steels, cast iron, and high-temperature alloys.

High-Speed Performance Milling 2 (HSPM2)
HSPM2 series milling cutters feature unequal flute spacing (variable pitch) to reduce or eliminate unwanted harmonic vibrations, commonly known as chatter. The 5-flute end mills feature a 38° helix angle on the flute geometry and sharp corners on the cutting edges. These cutters are well suited for semi-finishing and finishing applications. The end mills are center cutting.

Titanium Aluminum Nitride (TiAlN) coating increases the resistance of wear, ductility, and heat transfer through the chips, making these cutters a good all-around choice for roughing and finishing steel, stainless steels, cast iron, and high temperature alloys.

High-Temperature Performance Milling (HTPM)
HTPM series milling cutters have unequal flute spacing (variable pitch) and multiple helix angles (35° and 37°) to reduce chatter and harmonics for improved stability and better finishing. This also optimizes chip formation and chip evacuation. These 4-flute end mills feature chamfers or different available corner radii to strengthen the edges in roughing applications.

Aluminum Chromium Nitride (Hybrid AlCrN) coating reduces wear and increases heat resistance. These end mills are excellent for roughing and finishing, and fully capable of taking heavy cuts in steel, stainless steel, titanium/Inconel up to 40 HRc, as well as cast iron.

High-Temperature Milling (HTM)
HTM Series milling cutters are designed for high-performance milling of titanium and stainless steels. They also work well in alloy steels and cast iron. The high-performance, dual-core geometry is designed for superior chip evacuation, while still providing strength and rigidity, for excellent performance slotting and heavy profiling. These cutters feature unequal pitch for chatter-free cutting.

Aluminum Titanium Nitride (AlTiN) coating has a higher aluminum content than TiAlN, making it harder, with better lubricity. The drawback is that edges can chip in very hard materials.

High-Speed Aluminum Milling 1 (HSAM1) 
HSAM1 series milling cutters are 3-flute, center-cutting, high-performance end mills for aluminum. They have unequal flute spacing (variable pitch) to break up harmonics and reduce chatter and vibration. The wiper facet design improves floor finishes. These end mills provide extraordinary metal removal rates (MRR), by combining roughing and finishing operations for any aluminum plunging, slotting, and profiling application. The proprietary flute geometry is designed for rigidity and improved chip evacuation, generating wall-to-floor perpendicularity, even in thin-wall applications.

Bright/uncoated finish prevents the material from sticking/galling to the cutter, when used with mist or coolant.

High-Speed Aluminum Milling 2 (HSAM2) 
HSAM2 series milling cutters have a uniquely different flute design and superior corner protection from HSAM1 series cutters. The 3-flute “to the center” design, where all three flutes come to the center, is the ideal symmetrical shape. It works great at high spindle speeds, and is highly effective in vertical ramping up to 20 degrees, and step-over plunging applications. The engineered flute design provides effective chip evacuation at high feedrates, with lower cutting forces than competitive products.

The highly engineered 3-flute design provides more balanced cutting performance, without excessive heat buildup. In fact, while other end mills can gum up at high surface speeds, HSAM2 end mills keep cool by dissipating heat and providing outstanding chip evacuation. Combined with its ultra-micrograin carbide design, the results are:

  • Balanced cutting with less vibration
  • Ability to run at higher speeds with less heat in aluminum
  • More efficient chip evacuation
  • Ability to counteract extreme radial forces

Bright/uncoated finish prevents the material from sticking/galling to the cutter, when used with mist or coolant.

Diamond-Like Carbon (DLC) coating provides superior edge strength and increased tool life; excels in hard aluminum, and at high speeds.

END MILL CORNER TYPE

End Mill Corner Type

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Square

• Corners have a sharp, square profile
• 90° cutting angle
• Most common corner type
• Used for slotting, profiling, and plunge milling
• Creates flat bottoms with square corners

Chamfer

• Corners have 45° chamfer
• Helps distribute cutting forces evenly
• Prevents damage to the end mill
• Extends corner life
• Creates flat bottoms with slightly chamfered corners

Radius

• Corners have slight a radius
• Helps distribute cutting forces evenly
• Prevents damage to the end mill
• Extends corner
• Creates flat bottoms with slightly radiused corners

Number of Flutes (NOF)

Number of Flutes (NOF)

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3-Flutes

Recommended for non-ferrous materials. Fewer flutes allow for excellent chip clearance on larger chips, and deeper cut depths. Ideal for aluminum in heavy roughing and finishing applications.

4-Flutes

Recommended for ferrous materials. The low flute count allows for excellent chip clearance for general purpose roughing and slotting. Ideal for steel, stainless, and cast iron.

5-Flutes

Recommended for ferrous materials. Higher flute count increases the tool strength, but reduces the cut depths. Ideal for finishing or high-efficiency milling in steel, stainless, cast iron, and harder materials.

6-Flutes

Recommended for ferrous materials. High flute count yields a thicker core for greater tool strength and less deflection, while increasing material removal rates. Ideal for high-efficiency/high-speed milling in steel, stainless, cast iron, and high-temp alloys

END MILL VIDEOS

Chip Splitters and Roughing End Mills

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When you're machining pockets with an end mill it's not uncommon to get a stack of chips in the pocket that's hard to get out. Mark takes a look at several styles of end mills that cut your chips into smaller pieces, making them a lot easier to get out of the pocket before your end mill gets damaged re-cutting those same chips.