Woodworking Two Flute Router Bit For Drilling Machine Tools Tungsten Steel

Need a straight router bit that survives production, not a hobby bit? This one has a tungsten steel cutting head, a high speed steel shank joined by high frequency welding, and two flutes that clear the chip out of the slot. Ten sizes sit on one 1/2 inch (12.7 mm) shank, from 1/2*6*22 to 1/2*15*30: cutting diameters 6-15 mm, cutting heights 22-30 mm, published feeds from 8 m/min to 18 m/min at 18,000-24,000 r/min. Boxed one by one; customisation supported.

A shop that routs grooves, dados and mortises all day runs into the same three things: an edge that goes dull halfway through a batch, swarf with nowhere to go so the slot scorches, and a shank that fails where the head is joined to it. This bit is built to remove all three.

It is a two flute straight router bit for woodworking drilling machine tools. The cutting head is tungsten steel, brought to size by CNC grinding; the shank is high speed steel, listed as a separate material; the two parts are joined by high frequency welding.

Ten combinations are listed on one 1/2 inch (12.7 mm) shank: 1/2*6*22, 1/2*7*22, 1/2*8*22, 1/2*8*27, 1/2*8*30, 1/2*9*25, 1/2*10*30, 1/2*12*30, 1/2*1/2*30 and 1/2*15*30 — cutting diameters of 6 mm to 15 mm, cutting heights of 22 mm to 30 mm.

Speeds are published rather than guessed: at 6 mm cutting diameter run 18,000 r/min with 8-10 m/min feed, 21,000 with 12 m/min, 24,000 with 14 m/min; at 8 mm, 18,000 with 10-12 m/min, 21,000 with 14 m/min, 24,000 with 18 m/min. Each bit ships in its own box.

What each number on the label decides at the spindle:

• Two flutes, straight cut — two cutting edges leave a wide gullet behind each one, so a 6 mm groove clears its chip instead of recutting it.
• Tungsten steel head — the cutting head is tungsten steel, the material named for the blade, finished by CNC grinding.
• High speed steel shank — the shank is high speed steel, listed as a separate material from the head, on the same 12.7 mm grip.
• High frequency welded joint — head and shank are joined by high frequency welding, the method named on the listing for strength at that joint.
• Ten sizes, one shank — 1/2*6*22 through 1/2*15*30, diameters 6-15 mm, cutting heights 22-30 mm, all on a 1/2 inch shank.
• Published speed and feed — 18,000-24,000 r/min against 8-18 m/min, split by diameter: 6 mm at 8-10 m/min, 8 mm at 10-12 m/min.
• One box per bit — individual packaging, so a 15 mm head does not get chipped by a 6 mm shank before it reaches the machine.
• Built for drilling machine tools — listed under woodworking drilling machine tools and the woodworking industry, not a general-purpose hardware bit.
• Customisation supported — sizes outside the 10 listed combinations are quoted as a diameter, a height and a shank, not as a description.

For a shop that either sends every groove to an outside machinist or grinds by hand, the choice is normally between waiting and variance. A stocked size with a published speed is the third option.

• One shank covers the range. 10 combinations from 6 mm to 15 mm diameter run on the same 1/2 inch shank, so the collet is set once and only the head changes.
• Reorder by number, not by picture. every size reads shank, diameter, height: 1/2*8*30 is a 12.7 mm shank, an 8 mm cut and a 30 mm height.
• The first cut starts at a known point. 18,000 / 21,000 / 24,000 r/min are matched to 8-18 m/min feed for 6 mm and 8 mm cutting diameters.
• The joint is welded, not pressed on. high frequency welding joins head to shank — the method the listing names for joint strength.
• Two flutes in a narrow slot. two edges and a long gullet behind each keep a 6 mm groove clearing, so the chip leaves the slot.
• Spares that survive the drawer. each bit in its own box, then air, sea or express, so a spare ordered for a 15 mm housing arrives with its edge intact.
• Sizes outside the list are quoted. customisation is supported: give the diameter, cutting height and shank and it is priced as a number.

Shank, cutting diameter, cutting height, in that order. So 1/2*8*30 is a 1/2 inch (12.7 mm) shank, an 8 mm cutting diameter and a 30 mm cutting height, and every one of the 10 listed sizes uses the same 1/2 inch shank.

Only if the collet or chuck takes 12.7 mm. Measure the collet bore rather than the tool holder body: a 12.7 mm bore is what a 1/2 inch shank needs, and no listed size comes on a smaller shank.

Start at the published figure for the diameter. 6 mm cutting diameter: 18,000 r/min with 8-10 m/min feed, 21,000 with 12 m/min, 24,000 with 14 m/min. 8 mm: 18,000 with 10-12 m/min, 21,000 with 14 m/min, 24,000 with 18 m/min.

10-12 m/min at 18,000 r/min, then 14 m/min at 21,000 r/min and 18 m/min at 24,000 r/min. Those three pairs are the ones printed on the listing for 8 mm cutting diameter.

Two flute. Both the product name and the parameter block read two flutes, the cutting head carries two edges, and that is the flute count written into the speed and feed table on the listing.

Either, as long as the tool holder takes a 12.7 mm shank. The listing names woodworking drilling machine tools and the woodworking industry; the sizes and the published 18,000-24,000 r/min speeds apply to any spindle in that range.

One box per bit. Every piece is packed separately, which is what keeps a 15 mm head from being nicked by a 6 mm shank when you order a mixed set.

Yes. Customisation is supported, so a diameter, a cutting height or a shank outside the 10 listed combinations is quoted on request; send the three numbers and the quantity and you get the price.