Ball Nose Milling Cutters 12x70x125mm 2 Flute Blue Solid Carbide End Nose Mill

Cutting 3D shapes in wood on a CNC router and getting a stepped surface off a square end mill? This is a 2 flute ball nose milling cutter in φ12 x 70 x 125 mm — 12 mm shank, 70 mm blade, 125 mm overall — made in solid carbide with a blue coating on the flutes. The round nose leaves a radius instead of a corner, the two wide flutes clear chips on softer material and deep cuts, and the cutter weighs 0.18 kg. Price on request.

A shop milling curved work on a router keeps hitting the same three things: a square end mill leaves a staircase on every 3D surface, the finish then has to be sanded by hand, and a slim cutter that cannot clear its chips breaks in a deep pass. This cutter answers all three.

It is a 2 flute ball nose milling cutter in φ12 x 70 x 125 mm: 12 mm shank diameter, 70 mm blade length, 125 mm overall length, solid carbide through the body, blue coated on the flutes. The round nose puts a radius on the cut instead of a corner, which is what 3D contouring, surface finishing, slotting and pocketing need from one tool.

The 2 flute layout is the other half. Two flutes leave wider chip space than a 4 flute cutter of the same diameter, so a soft workpiece or a deep cut moves its chip out instead of packing. Blue coating on the edge holds friction and heat down, so the cutter runs at higher speed without losing its edge.

Net weight is 0.18 kg, so the 12 mm collet carries it with little overhang load, and the 125 mm overall length gives the reach for pockets and deep side work. Origin China, customization supported, price on request from Shunhongyu.

What decides whether a ball nose leaves a surface or a staircase:

• A round nose, not a corner. The ball nose leaves a radius along the profile, so 3D contouring comes off the tool instead of a sanded staircase.
• Solid carbide through the body. The 12 mm shank, 70 mm blade and 125 mm length are one piece of solid carbide, not a brazed tip.
• 2 flutes with room between them. Two flutes leave wider chip space than a 4 flute cutter of the same 12 mm diameter, so chips clear in deep cuts.
• Blue coating on the cutting edge. The coating cuts friction on the rake face and holds heat build-up down at high-speed machining.
• 70 mm of blade to work with. 70 mm blade inside a 125 mm overall length reaches pockets without an extension holder on the spindle.
• 12 mm shank, standard collet. The 12 mm shank goes into the 12 mm collet on the spindle, so the changeover is a tool change.
• 0.18 kg, light at the collet. 0.18 kg net weight keeps the load on the collet and taper low for a cutter this long.
• Four operations, one cutter. 3D contouring, surface finishing, slotting and pocketing run on the same 2 flute ball nose.

The usual choice on a curved surface is sending the job out or sanding it back by hand. What a buyer gets:

• One cutter covers four operations. 3D contouring, finishing, slotting and pocketing run on the same 2 flute ball nose, so the tool crib carries fewer lines.
• The radius is in the geometry. A ball nose leaves a constant radius by design, so the surface does not depend on who ran the pass.
• Chips leave instead of packing. Wider flute space on 2 flutes keeps a soft workpiece clearing its chip through a deep pass.
• Reach without stacking holders. 70 mm of blade on a 125 mm overall length gets into the pocket; every stacked holder also adds runout.
• Wear becomes a coating question. The blue coating takes the friction and heat at high-speed machining, so the edge holds between changes.
• Fits what is already on the spindle. A 12 mm shank and 0.18 kg net weight go straight into the collet the machine already has.
• Reorder by size string. φ12 x 70 x 125 mm is the whole part size; one string reorders it.
• A non-standard build is a quote. Customization is supported, so a different length or nose geometry is priced on request.

φ12 x 70 x 125 mm — 12 mm shank, 70 mm blade, 125 mm overall. All three numbers are on the size line, so the collet size, the depth of cut and the reach can be checked before an order.

Yes, if that collet is a 12 mm one. The shank diameter is 12 mm, which is the size the cutter is built to, so it goes into a 12 mm collet with no adapter.

Because chips need somewhere to go. Two flutes leave wider chip space than a 4 flute cutter of the same 12 mm diameter, so softer material and deep cuts clear their chip instead of packing the flute.

It cuts curves. 3D contouring is what the ball nose is for: the round nose leaves a radius along the profile instead of a corner, so a curved surface comes off the tool without a stepped finish.

The whole cutter. The 12 mm shank, the 70 mm blade and the 125 mm length are solid carbide, so there is no brazed joint between a carbide tip and a steel shank.

It lowers friction and heat at the cutting edge. The coating is a wear layer on the flutes, so the edge keeps its form at higher speed and the workpiece sees less heat at the contact point.

0.18 kg net. For a cutter with a 125 mm overall length that is light at the collet, and it is the figure to use when you check the load on the spindle.

Yes. Customization is supported, so a length or geometry other than the listed φ12 x 70 x 125 mm is quoted on request; send the size you need with the quantity for a price.