2D U drill SPMGT insert 12.5-45mm

SP insert 2D U drill
material: SKD61 H13 42crmo
HRC 55

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1,Using highly-strength special steel and surface strengthening process ,making higher strength and more wear-resistance .
2,The space of chip flute is much bigger ,the discharge is more smooth .
3,through the insert install the angle ,the insert which is cutting balance design ,cutting in low vibration ,the lathe main axia load is low ,cutting efficiency is high ,drilling precision and the surface finish are much better .
4,the series of big diameter U drill can be changed in different size of toolholder ,changed in the drilling diameter ,hel the users to cost saving substantially .
5.the new type of double helix internal cooling hole ,cooling and lubricating are much better and can drilling more deeper.

Warning :

1.Use the High Speed Dril the best to drain water from the high pressure center to extending inserts life and good for removing the metal chips 

2.Using CNC lathe the cutting center point with spindle center of Machine best to be parallel .

3.if you need to expand hole when using CNC Lathe ,the outer insert must parallel with the remove angle of cutter tower .

4.the inserts have to be checked regularly for wear and stop immediately once noise occurred .