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曲轴为铬钼钢锻件,除前后两个端面外,所有表面,包括在曲轴上的两个齿轮,均进行氮化处理。曲轴两端各有一个斜齿平齿轮,齿数为45,其节园线速度约为18米/秒,齿轮不经磨削,滚齿后用手工修整。曲轴及装上主轴承盖的曲轴箱示于图14。 主轴颈为146毫米,连杆轴颈为98毫米,允许磨修四次,每次0.254毫米,但每磨小0.508毫米需再氮化一次。 曲轴的轴向窜动量为0.1至0.3毫米,主轴承径向间隙为0.076至0.133毫米。曲轴自由端装硅油减震器,由12个螺栓以70牛顿·米力矩拧紧,重约42.75公斤。曲
The crankshaft is a chrome-molybdenum steel forgings, all surfaces, including the two gears on the crankshaft, except for the two front and rear faces, are nitrided. Each end of the crankshaft has a bevel gear, the number of teeth 45, the park line speed of about 18 m / s, the gear without grinding, hobbing after hand trimming. The crankshaft and crankcase fitted with the main bearing cap are shown in Figure 14. The main journal is 146 mm and the connecting rod journal is 98 mm, allowing for four sharpening cycles of 0.254 mm each, but a further 0.508 mm per mill is required for nitriding again. The crankshaft axial play is 0.1 to 0.3 mm and the main bearing radial clearance is 0.076 to 0.133 mm. Free ends of the crankshaft installed silicone shock absorber, by 12 bolts to 70 Newton meters torque tightening, weighing about 42.75 kg. song