常用螺栓的许用夹紧力及所需夹紧扭矩

各种直径螺栓的许用夹紧力及达此夹紧力所需的夹紧扭矩以上计算f=0.18 ,Q =0.64 也4L_.拉=许用拉应力=800kg/cm2螺栓外径dmm许用夹紧力QKG家在螺母上的夹紧扭矩 M （ NM ）螺母承托表面的情况有滚动轴承（卩=0）无滚动轴承（卩=0.2）82602.25104004.29.5125807.316.216105017.137.920160032.56724230055.9123.527295079.9f仃 8.8303600108.7244螺母夹紧，不同夹紧力所需要的夹紧扭矩值螺 纹 外 径 d mm加在螺母上的夹紧扭矩 M （NM）夹紧力Q kgJr2604005808001050 气16002000230029503600IIIIIIIIIIIIIIIIIIIIIIIIIIIIII82.25102.76.24.29.5123.27.3511.27.316.2164.29.46.514.49.520.91328.917.137.9205.310.98.116.811.824.316.233.521.34432.567246.3149.721.514.131.119.44325.556.438.985.948.6107.455.9123.527715.810.824.215.735.121.748.528.563.643.49754.2121.262.3139.479.9178.8307.917.712.1 ,27.217.539.424.254.431.771.448.3108.860.413669.5156.489.1200.6108.7244I承托表面有滚动轴承；II承托表面无滚动轴承球端螺钉夹紧或承托表面有滚动轴承的螺母夹紧时，夹紧力0.1d（Q公斤，M夹紧扭矩 公斤毫米，d螺纹外径毫米）承托面无滚动轴承，选J =0.2，夹紧力QM0.22dZgliuwh