Drill America - D/ACO3/4 3/4 Bit-Tħaffir tal-Kobalt Mnaqqsa b'Xank 1/2, Serje D/ACO 3/4 1/2 Shank

Brand:Drill America

3.2/5

Magħmula minn kobalt reżistenti għas-sħana u mitħun għal heavy duty 135° split point. Flawt komuni u tul ġenerali għal aġġustament minimu waqt il-bidliet tal-għodda. Art ta 'preċiżjoni għal grad għoli ta' konċentriċità bejn ix-xejk u d-dijametru tal-ġisem. Ideali għat-tħaffir f'materjali iebsa u ta 'reżistenza għat-tensjoni għolja. Tespandi l-kapaċità tal-firxa tad-daqs ta 'ċokk ta' drill portabbli. Flawt komuni u tul ġenerali għal aġġustament minimu waqt il-bidliet tal-għodda. Art ta 'preċiżjoni għal grad għoli ta' konċentriċità bejn ix-xejk u d-dijametru tal-ġisem. Ideali għat-tħaffir f'materjali ta 'reżistenza għat-tensjoni baxxa u medja.

Ebda unitajiet disponibbli
Manifatturati skont l-istandard Nazzjonali tal-Aerospazju 907. Meta jitmexxew f'direzzjoni kontra l-arloġġ (qatgħa tal-lemin) għodod skanalat spirali jevakwaw iċ-ċipep 'il fuq u 'l barra mill-qatgħa biex jitnaqqas l-imblukkar. Ix-xekkel tondi jippermettu l-użu ma 'varjetà wiesgħa ta' sistemi ta 'żamma tal-għodda. L-ossidu tad-deheb huwa trattament tal-wiċċ ta 'ossidu irqaq minn ossidu iswed tipikament użat biex jidentifika għodod tal-azzar tal-kobalt; il-prestazzjoni hija simili għal għodda mhux miksija. Għodod tal-azzar tal-kobalt huma simili għall-azzar b'veloċità għolja, iżda b'aktar kobalt għal prestazzjoni mtejba meta jaqtgħu metalli aktar iebsin bħall-istainless steel jew il-ligi tan-nikil.
Country of Origin USA
Cutting Angle String 135 Degrees
Cutting Diameter 0.75 Inches
Finish Type Gold Oxide
Is Discontinued By Manufacturer No
Item model number D/ACO3/4
Manufacturer Drill America
Material Cobalt Steel
Product Dimensions 6 x 1.3 x 1.2 inches; 1.16 Ounces
Shank Type Round

3.2

9 Review
5 Star
66
4 Star
11
3 Star
6
2 Star
3
1 Star
15

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Scritto da: Wayne S.
Cobalt Hardened for Hard Metals
Cuts through stainless and hardened steels where titanium and others fail. Use some oil to preserve its edge for longer life.
Scritto da: Laura
Stainless steel
Just a couple of holes in 1/2" ss.
Scritto da: ratflinger
Quality bit
Bought a cheaper bit 1st - it failed immediately so I ordered this bit from Drill America. This bit drilled the 16 holes I needed and was still going strong at the end. Drill America bits stand up to the test.
Scritto da: GSD
Need a hole in your head?
Ok, maybe not the noggin! But for drilling steel this bit worked as a cobalt bit should. No issues, and it cut fast. Drilled through 1/4 plate steel pretty quickly using a 20 volt cordless drill. Quality seems good and was cheaper than big brand names. Like the reduced shank so i could use in 1/2" drill. Nothing worse then having a bunch of drill bits with the size worn off from slippage, so pick up a couple.
Scritto da: Mr. Geweke
worked well enough at a difficult task
Lasted about 2 hours of use against hardened steel before starting to dull. Would last a lot longer against mild steel and even longer with soft metals.
Scritto da: Earl Burns
Very sharp.
Drilled 15 holes through 1 in plate steel just fine. I used tap magic and a drill press.
Scritto da: Seth VanNuys
Legit
Had a project to drill 4x 5/8 holes in hardened steel. I had ordered 3 Cobalt hss bits from two different brands. Each failed drilling only about an 1/8" of the material. Ordered the bit from Drill America and finished the first hole in 20sec or less and went on to do the other three holes without issue using the single bit.
Scritto da: Mac user
Stepped shank drill doesn't run true
I bought a 33/64" stepped shank drill to cut close fit clearance holes for a 1/2-13 fastener. I mounted the drill on the 3 shank flats and noted significant runout (I'm guessing at least 1/16" runout) at the tip of the drill. So I tried mounting it on the 1/2" cylindrical surface. With the drill in that position, the bit cuts a hole that is 17/32" in diameter. So, it appears neither the stepped shank or the flats allow the drill to run concentric with the cutting tip. As a result I'll be avoiding Drill America bits in the future.
Scritto da: Richard
Well cutting!
As expected, fast delivery!

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