A*2+C*2A*2+C*1.5A*2+B+C*2A*2+B+C*1.51M61.63.26.401619.22M81.64.27.94019.0823.283M1025.29.54023.0828.284M10(止退螺母)25.29.54018.3123.515M122.56.212.1785.6114.94121.146M12(止退螺母)2.56.212.17023.25529.4557M142.57.213.9025.8533.058M1638.215.9029.8538.059M183916.9031.3540.3510M2031019034.544.511M2241120.2038.349.312M2441222.3041.4553.4513M3041526.4047.662.6核准:审核:螺栓长度L(mm)螺栓长度L(附弹垫)mm常用螺栓长度的计算制表:马伟峰序号螺栓规格A:平垫厚度h(mm)B:弹垫自由高度h(mm)C:螺帽高度m(mm)紧固部件厚度X(mm)序号螺栓规格GB5780,5781-86平垫厚度HGB95-85弹垫自由高度hGB93-87螺帽高度mGB41-86紧固部件厚度X螺栓长度L(未附弹垫)螺栓长度L(附弹垫)1M61.63.26.4X19.6+X22.8+X2M81.64.27.94X21.14+X25.34+X3M1025.29.54X23.54+X28.74+X4M122.56.212.17X27.17+X33.37+X5M142.57.213.9X28.9+X36.1+X6M1638.215.9X31.9+X40.1+X7M183916.9X32.9+X41.9+X8M2031019X35+X45+X9M2241120.2X38.2+X49.2+X10M2441222.3X40.3+X52.3+X11M3041526.4X44.4+X59.4+X注:其中螺栓的长度已附加10mm的余量只需加上紧固件的厚度X即可计算出螺栓长度L核准:审核:制表:马伟峰常用螺栓长度的计算常用螺栓长度的计算螺栓长度L(mm)螺栓长度L(附弹垫)mmA*2+C+D*0.3+XA*2+B+C+D*0.3+X1M61.63.26.46011.414.62M81.64.27.948013.5417.743M1025.29.5410016.5421.745M122.56.212.1712020.7726.977M142.57.213.914023.130.38M1638.215.916026.734.99M183916.918028.337.310M2031019200314111M2241120.222034.845.812M2441222.324037.549.513M3041526.430043.458.4注:参考机械设计手册(徐灏主编)第三卷第21篇第二章44页常用螺栓长度的计算序号螺栓规格A:平垫厚度h(mm)B:弹垫自由高度h(mm)C:螺帽高度m(mm)D:螺栓直径(mm)X:紧固部件厚度(mm)