4 flutes high efficiency ball nose end mill EHHB-ATH Epoch High Hard Ball

Achieves high-efficiency direct cutting of hardened steels! Greatly reduces processing steps by achieving direct cutting after tempering. Features of EHHB-ATH Highly efficient cutting with 4 flutes Special flute shape in tip area improves cutting performance. ATH coating provides long tool life even on hardened steels. Variable Pitch geometry enables vibrations to be suppressed even for 4 flutes. Wide chip pocket improves chip removal for stable cutting. Peripheral flute can also be used. (High helical provides good cutting performance.) Applicable range Copper Carbon steel Alloy steep Stainless...

Suppressed vibration with Variable Pitch geometry 4 flutes Variable Pitch X direction d Y direction d Z direction d Cycle Cyc e r flute Cycle per flute Cycle per flute yc flu Conventional 4 flutes Equal pitch X direction Y direction Z direction The vibration can be observed a cycle per flute. Performance and positioning Hardened steels (HRC) 4 flutes Epoch High Hard Ball Covers the range from 55 to 72 HRC. (Surpasses conventional tools particularly on hardened steel of 55 HRC or higher.) Roughing region EPBTS-TH EPBT （2 flutes） Finishing region Improved heat-resistant coating Features and characteristics...

For regrinding of this tool, please ask our company. We will reproduce the special tip section shape. O Re-grinding compatibility range table

For work materials with hardnesses up to 55HRC, we recommend our company's 2-flute or 3-flute tool series. Please refer to "Performance/Positioning" on page 3. ^Set the hole diameter for helical boring to between 1.6 and 2.0 times the tool diameter. ^Set the maximum depth for helical boring to the tool diameter or smaller (< 1D). [Note] S Use the appropriate coolant for the work material and machining shape. © Use as highly rigid and accurate machine as possible. © These conditions are for general guidance; in actual machining conditions adjust the parameters according to your actual machine...

Recommended Cutting Conditions ap Work material Ball radis R Cutting speed vc =280m/min Revolution n Feed rate v f Revolution n Feed rate v f Cutting speed vc =210m/min Revolution n Feed rate v f Revolution n Feed rate v f Cutting speed vc =160m/min Revolution n Feed rate v f Hardened Steels (45∼55HRC） SKD61, HPM38, DAC-MAGIC Work material Ball radis R Pre-hardened Steels (35∼45HRC） HPM-MAGIC, CENA1 Cutting speed vc =120m/min Revolution n Feed rate v f ① appropriate coolant for 【Note】 Use thehighly rigid and accuratethe work material and machining shape. ② Use as machine as possible. ③ These...

02 Sintered HSS bottom cutting example [HAP40, 64HRC] Tool： （R4） φ8 n =3,600min-1 c=90m/min） v f =1,220mm/min(4 flutes： z =0.085mm/t, 2 flutes fz =0.17mm/t) （v f ： ap=0.5mm ae=1.5mm Dry, Air-blow Machine ：HSK-A63 Over hang：32mm 32mm y, Air blow Machine HSK A63 Over Cutting distance Cutt n distance：20 Cutting distance：20m ttin distance：20m Cutting dist ce： Cut ing distance 20 Cutting distance：20m ttin tt n distance：20m stan Cutt ng distance 40m Cutting distan Cutting distance : 40m ttin ance an C pp Chippi g occured Ch pping occured Chipping oc ured pi cc re r Norm Normal wear Normal wear ea Chipping...

The diagrams and table data are examples of test results, and are not guaranteed values. "Epoch" and “ ” are registered trademarks of Mitsubishi Hitachi Tool Engineering, Ltd. in Japan. Attentions on Safety 1. Cautions regarding handling (1) When removing the tool from its case (packaging), be careful that the tool does not pop out or is dropped. Be particularly careful regarding contact with the tool flutes. (2) When handling tools with sharp cutting flutes, be careful not to touch the cutting flutes directly with your bare hands. 2. Cautions regarding mounting (1) Before use, check the outside...