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1/4″ Extra-Long CNC Ball Nose Bit – 2″ Cut (AstraHP Coated)

Designed for precision and depth, this 4″ long solid carbide ball nose end mill features a generous 2″ length of cut—perfect for deep carving and detailed 3D work. The AstraHP coating boosts tool life and performance, reducing wear even under demanding conditions. Ideal for CNC woodworkers and makers who need reach without sacrificing finish quality. AstraHP Coated Solid Carbide Tip Diameter: 1/4″ Shank: 1/4″ Overall Length: 4″ Cut Length: 2″ Up-cut Made In USA #row-590678477 > .col > .col-inner { padding: 20px 0px 20px 0px; } #section_1939661237 { padding-top: 45px; padding-bottom: 45px; } @media (min-width:550px) { #section_1939661237 { padding-top: 65px; padding-bottom: 65px; } } @media (min-width:850px) { #section_1939661237 { padding-top: 2px; padding-bottom: 2px; } }

1/4″ Extra-Long CNC Ball Nose Bit – 2″ Cut (AstraHP Coated) - Main image
$49.4 $80.99 In stock

Category: Ball End Mill Ball Nose End Mills

What is a Ball Nose End Mill?

Ball nose end mills, also known as full radius end mills or ball mills, are cutting tools where the nose radius is equal to half of the diameter of the tool. This creates a constant single radius (or ball) at the tool end with no straight edge (sharp corners) in the profile. They are used for contour milling, shallow slotting, pocketing and contouring applications. Ball nose mills are ideal for 3D contouring because they are less prone to chipping and leave a nice rounded edge. Formerly XLB14-420C.

This data serves as a general guidance only. These are conservative speeds and feeds due to the cut length on these tools.

Soft Woods/ Hard Woods

RPM: 16,000

IPM : 30-40″

Cut depth per pass: 1/4″

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.4 / 5 · 5 reviews)

Riley ★★★★★

I've been profiling deep pockets in walnut and this extra-long bit gets all the way down without the collet rubbing. The AstraHP coating is still slick after a few hours of cutting, no burning on the walls.

Victoria L. ★★★★★

The 2" cut length lets me reach the bottom of deep pockets without any chatter, which my shorter bits just couldn't handle. Full radius leaves a smooth finish on my contoured passes too.

Andrew ★★★★★

The AstraHP coating really holds up—I've been cutting aluminum for a few hours and the edge still looks fresh. The ball nose leaves a smooth radius on my contoured pockets, way cleaner than my old two-flute.