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The Niagara Cutter SP205 uncoated (bright) cobalt steel square nose end mill has two flutes and a 30-degree helix angle to mill a wide range of materials, including high-temperature alloys. The cobalt steel substrate can be run at faster speeds and stays sharp longer than high-speed steel tools, while offering greater resistance to heat and abrasion. With no coating or surface treatment, this uncoated tool can be used on a broad range of materials.
The end mill’s two flutes have better chip-carrying capacity than end mills with more flutes while offering additional support when the tool goes deep into the material in applications with a high depth of cut. The 30-degree helix angle offers general-purpose machining. It balances lower angles’ strong cutting edge for difficult-to-machine materials with higher angles’ increased cutting action. The tool’s square end creates sharp, unrounded cuts, while the center-cutting design has cutting teeth at the end of the tool that support making pocket cuts, profiling, and slotting. Cutting diameter tolerance is +0.001” to -0.000”. The end mill has a Weldon shank.
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.
Customer
Reviewed in the United States on June 8, 2023
Unbelievably sharp. Niagara is beautiful quality at a lovely price.
Gscho
Reviewed in the United States on February 11, 2023
but it can buy you these Niagara end mills. These are so well made, durable, and sharp, they'll put a smile on your face.
David Weaver
Reviewed in the United States on December 27, 2023
Good product cuts good
Just Thomas
Reviewed in the United States on September 12, 2022
This is a high speed two flute end mill, good for cutting softer metals like aluminum. This is a great cutter, Niagara is a brand I've used before and the quality is always good.
TonyG
Reviewed in the United States on December 27, 2022
What can I say exactly as described and great quality as always from Niagara products
Ronald Murray
Reviewed in Canada on August 1, 2021
Item as describedFast reasonable shipping
jean-paul giasson
Reviewed in Canada on August 30, 2020
satisfait
Brandon
Reviewed in the United States on September 25, 2019
Really love it for the price. Clean cuts and hasn’t dulled or chipped on me yet.
Paul Anderson
Reviewed in the United States on May 15, 2019
After using this Niagara end mill, I will never buy anything else but a Niagara. Cheap bits are no bargain and these are USA made!
Omaprikus
Reviewed in the United States on December 2, 2019
I'm only cutting soft metals with it, but it's still razor sharp and true. Very well made and can't beat the price.
Matt
Reviewed in Canada on November 5, 2019
MEH. its ok but wouldnt say anything past that. had quite a bit of tear out while surfacing some ash even after i played with my feeds and speeds.
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