Annular Cutters Set 6pcs JESTUOUS 3/4 Inch Weldon Shank 2 Cutting Depth 7/16 to 1-1/16 Cutting Diameter HSS Kit for Magnetic Drill Press with 2 Pilot Pins

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About Annular Cutters Set 6pcs JESTUOUS 3/4 Inch Weldon

Specification:  Item:HSS standard weldon annular cutter set Includes: 6 annular cutters; 2 pilot pins & 1 carrying case  Cutting Diameter: 7/16", 9/16", 11/16", 13/16", 15/16" &1-1/16" Cutting Depth: 2" Shank Diameter: 3/4"  Shank Style: Weldon Flat  Number of Flats: 2  Accessories: 2 pilot pins (6.34mmx103mm&4.74*102mm)  Material:High Speed Steel（HSS） Finish/Coating: Bright Fits: Core hole drilling fields such asengineering,rail transit, bridges, ships, machinery manufacturing, aerospace,mild& structural steel,aluminum,stainless steel (lower BHN)and cuts only agroove at the periphery of the hole and leaves a solid core or slug at the center.  Application:  1.Requirement to cutting rotate speed of annular cutter are also different fordifferent diameters,and reasonable cutting rotate speed will prolong servicelife of annular cutter directly,So we recommend:1.The cuttingspeed:VC=20-25m/min 2.The reasonable rotate feed amount shall befn=0.08-0.13mm/r 3.The reasonable feed rate shall be vf=36-60mm/min 2. "Weldon shank" annular cutters have 2 flats andfix in the chuck by tightening Grub screws in the two flat areas.  3. Insert the ejector pin inside the annular cutter,never use an annular cutter without an ejector pin.Fill the coolant tank with BDSlubricant,never use the machine without lubricant.  Tips:  1. Make sure the product is correct when youfirstly receive it,any problem please feel free to contact us.  2. Remember to protect yourself, especially eyeswhen working with it. 3. We also have other pieces annular cutter set and single annular cutter, if you need, just search on our shop,many sizes can be chosen.