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Niagara Cutter N76145 Carbide Square Nose End Mill, Inch, Uncoated (Bright) Finish, Roughing Cut, 20 Degree Helix, 5 Flutes, 5" Overall Length, 1.000" Cutting Diameter, 1.000" Shank Diameter


On Sale Now! Free Shipping Included! Save 6% on the Niagara Cutter N76145 Carbide Square Nose End Mill, Inch, Uncoated (Bright) Finish, Roughing Cut, 20 Degree Helix, 5 Flutes, 5'' Overall Length, 1.000'' Cutting Diameter, 1.000'' Shank Diameter by Niagara Cutter at Hosted Payload. MPN: N76145. Hurry! Limited time offer. Offer valid only while supplies last. The Niagara Cutter SR420 uncoated (bright) carbide square nose roughing end mill with corner chamfer has a 20-degree helix for high-performance


Product Description

The Niagara Cutter SR420 uncoated (bright) carbide square nose roughing end mill with corner chamfer has a 20-degree helix for high-performance roughing cuts in steel and stainless steel. The number of flutes varies by diameter to optimize the feed and cut rate. Rougher end mills are special-purpose tools whose chip-breaking cutting edges create small chips for heavy cuts and remove more material in less time than conventional end mills, with minimal vibration (chatter). The 20-degree helix adds strength to the cutting edge compared to higher helix angles, making it suitable for rough machining on difficult-to-cut materials. The end mill produces a rough finish that can be smoothed by a second finishing cut. It is designed for slotting applications.

The carbide substrate is harder than high-speed or cobalt steel, making it more wear resistant at high speeds and providing longer tool life; this tool has no coating or surface treatment. The tool’s square end creates sharp, unrounded cuts and has a corner chamfer on the cutting edges to provide more strength than standard square end tools in applications where cutting forces are high. The center-cutting design has cutting teeth at the end of the tool, so it can be fed into the workpiece like a drill bit. Cutting diameter tolerance is +0.000" to -0.003". The round shank accommodates a range of tool holders.

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 since 1954. Specializing in end mills, cutting mills, and saws, the company is based in New York and manufactures its tools at facilities in Pennsylvania and Massachusetts. This allows the company control over production, from substrate to coating, which is essential for customers in a variety of industries, especially aerospace and automotive.

Features & Highlights

  • Roughing end mills have chip-breaking cutting edges that remove material in less time than conventional end mills
  • 20-degree helix provides more cutting-edge strength than higher helix angles to efficiently machine steel and stainless steel
  • Number of flutes varies by diameter to optimize the feed and cut rate
  • Carbide can run at higher speeds than high-speed or cobalt steel, resisting wear and high cutting temperatures
  • Square end creates sharp, unrounded cuts and has a corner chamfer to strengthen the cutting edges

Additional Information

Manufacturer:Niagara Cutter
Brand:Niagara Cutter
Model:N76145
Part Number:N76145
Publisher:Niagara Cutter
Studio:Niagara Cutter
MPN:N76145
UPC:698036761455
EAN:0698036761455

Niagara Cutter N76145 Carbide Square Nose End Mill, Inch, Uncoated (Bright) Finish, Roughing Cut, 20 Degree Helix, 5 Flutes, 5'' Overall Length, 1.000'' Cutting Diameter, 1.000'' Shank Diameter by Niagara Cutter

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Niagara Cutter N76145 Carbide Square Nose End Mill, Inch, Uncoated (Bright) Finish, Roughing Cut, 20 Degree Helix, 5 Flutes, 5" Overall Length, 1.000" Cutting Diameter, 1.000" Shank Diameter

Brand: Niagara Cutter
4.4 out of 5 stars with 7 reviews
Condition: New
Lead Time: 1 - 2 Business Days
Availability: In Stock
$350.76
$333.01
You Save: 5%


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