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Niagara Cutter MEB230 Carbide Ball Nose End Mills, Inch, Uncoated (Bright) Finish, Roughing and Finishing Cut, 30 Degree Helix, For Use With All Materials

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Product Specifications
Manufacturer Series Number
Cutting Direction
Right Hand
Compatible Material
All Materials
Finish Types
Uncoated (Bright)
End Cut Type
Center Cutting
Shank Type
Material Type
Cut Type
Roughing and Finishing
Cutting Angle
30  Degrees
Brand Name
Niagara Cutter
System of Measurement

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Cutting Diameter Shank Width Cutting Length Overall Length Number of Flutes Mfr Part # ASIN

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1/128" 1/8" 0.045" 1.5" 2 59639 B000N474FC 3 $22.11 Buy Options
1/128" 1/8" 0.030" 1.5" 2 59634 B000N48QDG 2 $22.94 Buy Options
1/128" 1/8" 0.042" 1.5" 2 59638 B000N48TVK 1 $20.49 Buy Options
1/128" 1/8" 0.036" 1.5" 2 59636 B000N4A8ZU 1 $21.08 Buy Options
1/128" 1/8" 0.033" 1.5" 2 59635 B000N45AJE 1 $22.80 Buy Options
1/128" 1/8" 0.039" 1.5" 2 59637 B000N45AKS 1 $23.68 Buy Options
1/64" 1/8" 0.048" 1.5" 2 59640 B000N45BIE 2 $20.71 Buy Options
1/64" 1/8" 0.057" 1.5" 2 59643 B000N45BJI 1 $19.83 Buy Options
1/64" 1/8" 0.063" 1.5" 2 59645 B000N45BK2 1 $19.92 Buy Options
1/64" 1/8" 0.069" 1.5" 2 59647 B000N456SO 1 $20.30 Buy Options
1/64" 1/8" 0.066" 1.5" 2 59646 B000N474BG 3 $20.30 Buy Options
1/64" 1/8" 0.060" 1.5" 2 59644 B000N4790C 2 $21.94 Buy Options
1/64" 1/8" 0.054" 1.5" 2 59642 B000N4A9WM 2 $20.71 Buy Options
1/64" 1/8" 0.051" 1.5" 2 59641 B000N4A9VS 1 $19.83 Buy Options
3/128" 1/8" 0.090" 1.5" 2 59654 B000N456WU 1 $19.95 Buy Options
3/128" 1/8" 0.072" 1.5" 2 59648 B000N474CA 1 $19.19 Buy Options
3/128" 1/8" 0.084" 1.5" 2 59652 B000N474HK 1 $16.53 Buy Options
3/128" 1/8" 0.093" 1.5" 2 59655 B000N48Q8G 1 $17.60 Buy Options
3/128" 1/8" 0.081" 1.5" 2 59651 B000N48Q6I 2 $18.51 Buy Options
3/128" 1/8" 0.087" 1.5" 2 59653 B000N4A5GM 1 $19.16 Buy Options

Key Features

  • Miniature end mills create the intricate cuts needed for precision industries
  • Two flutes offer better chip-carrying capacity than end mills with more flutes
  • Carbide can run at higher speeds than high-speed or cobalt steel, offering increased wear resistance and high cutting temperatures
  • Uncoated (bright) tools have no additional surface treatment or coating to retain miniature end mill's tight tolerances
  • Ball nose end (also called ball end) creates contoured surfaces

Product Description

The Niagara Cutter MEB230 miniature uncoated carbide ball nose end mill has two flutes and a 30-degree helix to create the intricate cuts needed for precision industries such as electronics and medical-device manufacturing. The two flutes have better chip-carrying capacity than end mills with more flutes. The 30-degree helix balances lower angles’ strong cutting edge for difficult-to-machine materials with higher angles’ increased cutting action. This allows efficient cuts in the materials common in precision industries such as stainless steel and reinforced plastic. The ball end is suited for contouring applications where sharp edges are not required, and the center-cutting design allows the tool to plunge into the workpiece like a drill bit.

The carbide substrate is harder than high-speed or cobalt steel, making it more wear resistant at high speeds and providing longer tool life. With no coating or surface treatment, it features just the base material to help the miniature mill retain its sharp edges and tight tolerances. The tool has a total indicated runout (TIR) of + or - 0.0002”. This measurement defines the positional accuracy of the end mill’s horizontal movement from the shank to the cutting edge. To increase rigidity and ensure low runout, the tool should be held by a precision holder. Cutting diameter tolerance is + or - 0.0005”. All sizes have an overall length of 1 1/2” and a shank diameter of 1/8”.

End mills are designed to remove material and create multi-dimensional shapes and profiles. They have cutting edges along the outside diameter and flutes that remove chips from the cutting area and allow cooling fluids to enter. If heat is not reduced effectively, the tool’s cutting edges will dull and additional material buildup can occur. The number of flutes can range from two to eight. Two-flute designs offer the most efficient chip removal, but more flutes provide a smoother finish. The shank is the end of the tool held in place by a tool holder or machine. Center-cutting end mills can create three-dimensional shapes and profiles, and make plunge cuts similar to a drill bit. Non-center-cutting end mills are for applications such as peripheral milling and finishing, but cannot make plunge cuts.

Niagara Cutter has been designing and manufacturing precision cutting tools for over 50 years. Specializing in end mills, cutting mills, and saws, the company manufactures all of its tools at its two facilities in the USA. This allows the company complete control over production, an essential benefit for customers in a variety of industries, especially aerospace and automotive.

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