Magnetic base drill Hole cutter

HSS one touch shank magnetic base drill(annular cutter,hole drill,hole cutter,magnetic base drill) We manufacture annular cutters / hole cutters with CNC machines and we have many cutters of different sizes in stock. Weldon shank & one touch shank annular cutters,M2,M35,M42 material,size from12mm-100mm,depth25mm,30mm35mm,,50mm,55mm,75mm Can drill iron sheet ,stainless steel,etc. Abrasion resistance,the cutters have long life . Tin coated ,TIALN Detailed Selling Lead Description 1.cutter Dia(mm):12mm...........100mm 2.Max.drilling depth:30mm/55mm/110mm 3.Tin coated is also OK. 4.Type:WBS/WBR/WBL Recommended Vc Recommended Vc(metermin) Type Cutters Materials Steel (700N/mm2) Stainless steel(l000 N/mm2) Cast iron (250N/mm2) Brittle CuZn AIloy Tough CuZn Alloy Alualloy containing 11Si Plastic (A) Plastic (B) WBS WBR WBL 30 20 10 60 35 30 20 15 WNBS WNBR WNBL 30 20 10 60 35 30 20 15 WDR 30 20 10 60 35 30 20 15 T0 obtain recommend RPM RPM= 1000*perlpheral speed(metermin) (3.14)*Cutter diameter(mm) Recommended feed(mmrev) Type of cutters Steel plate Stainless steel Cast iron WBS/MBR/WBL/WDR 0.01-0.05 0.01-0.05 0.01-0.05 WCBS/WCBR/WCDR 0.08-0.12 0.08-0.10 0.12-0.20 Drilling summary 1.For best results,it is advisable to predetermine the drilling position by indentation with a centre punch. 2.Select appropriate RPM. 3.Observe the recommended feed pressure It is better to be slower paticularly in the initital stage of drilling. 4.When drilling is completed,withdraw cutter while drill is still rotating. 5.Remove slug and chips after each drilling.(NoteA spring mechanism in the Shank Assembly will facilitate the removal of the slug.) 6.When drilling laminated material,remove slug and chips after having bored through each lamination. 7.If a magnetic drill stand is used,ensure that the underside of the magnetic board is kept clean. 8.Continuous use of oil coolant is necessary throughout the drilling process when the material is steel or stainless steel.Coolant is recommended for cast iron,copper,aluminum:but not required for FRP or wood.