... = 1+ 0 ,40 7.0,5.1 74. 90,6 1,003 2 .44 5 243 ,4. 1,072 64 1,13 KH =KH.KHKHv=1,072 64. 1,13.1,003 =1,21556 =ZM.ZH.Z H =2 74. 1,71738.0,76 2 .44 5 243 ,4. 1,2675(2, 841 1) 2T2 K H (u 1) 0,5.1 74. 2, 841 .90,6 ... 1,222 1,222.0,5.1 74. 90,6 1,007 2 .44 5 243 ,4. 1,16528 1,37 KF = 1,16528.1,37.1,007 = 1,61 F1 2T2 YF Y Y YF bw3 d w3 m 2 .44 5 243 ,4. 1,61.0,578.0,902.3,6599 0,5.1 74. 90,6 F1 [F]1 =288 ... cos 13,77 257 ,4 da3 =d3 + 2.m =90,6 + 2.2 = 94, 6 mm da4 = d4 + 2.m =257 ,4+ 2.2 =261 ,4 mm Đường kính chân df3 =d3 -2,5.m =90,6 -2,5.2 =85,6 mm df4 =d4 -2,5.m =257 ,4 -2,5.2 =252 ,4 mm chiều rộng...