Заказ инструмента: http://steelcam.org 8 (343) 382-52-03 | sales@sverla-ekb.ru Threading Anvil Selection With the Stellram threading system, a wide range of 1.5° Standard thread helix angles can be obtained without changing or Threading modifying toolholders. This is obtained by simply changing the carbide anvil. β Most toolholders are produced with 1.5° helix machined into the body. These tools are supplied with this angle as standard. 1.5° Standard Interchangeable anvils allow helix variations between +4.5° and -1.5° with the insert cutting edge remaining constant. β Negative helix angles are used for producing right hand threads with left hand holders or left hand threads with right hand holders. Negative Helix ß Helix Angle Insert size Toolholder 4.5° 3.5° 2.5° 1.5° 0.5° 0° -0.5° -1.5° mm Inch Anvil Part Numbers EX RH / IN LH YE33P YE32P YE31P YE3 YE31N YE31.5N YE32N YE33N 16 3/8" EX LH / IN RH YI33P YI32P YI31P YI3 YI31N YI31.5N YI32N YI33N EX RH / IN LH YE43P YE42P YE41P YE4 YE41N YE41.5N YE42N YE43N 22 1/2" EX LH / IN RH YI43P YI42P YI41P YI4 YI41N YI41.5N YI42N YI43N EX RH / IN LH YE4U3P YE4U2P YE4U1P YE4U YE4U1N YE4U1.5N YE4U2N YE4U3N 22U 1/2" EX LH / IN RH YI4U3P YI4U2P YI4U1P YI4U YI4U1N YI4U1.5N YI4U2N YI4U3N EX RH / IN LH YE53P YE52P YE51P YE5 YE51N YE51.5N YE52N YE53N 27 5/8" EX LH / IN RH YI53P YI52P YI51P YI5 YI51N YI51.5N YI52N YI53N EX RH / IN LH YE5U3P YE5U2P YE5U1P YE5U YE5U1N YE5U1.5N YE5U2N YE5U3N 27U 5/8" EX LH / IN RH YI5U3P YI5U2P YI5U1P YI5U YI5U1N YI5U1.5N YI5U2N YI5U3N Note: Standard toolholders are supplied with 1.5° helix angle as standard. Calculation of thread helix angle for a given thread Helix angle - Tan-1 u = Lead of the Thread Pitch/Effective Diameter x π www.kennametal.com C245