LM739749/LM739710挖掘机轴承NTN挖掘机轴承天津挖掘机轴承克迪斯轴承（天津）NTN挖掘机轴承NSK挖掘机轴承外形尺寸及技术参数对照表NTN挖掘机轴承NSK挖掘机轴承克轴承型号(圆锥滚子轴承)外形尺寸(dxDxB)迪NTN轴承/LM739749/LM739710挖掘机轴承196.85x257.175x39.688斯NTN轴承/L540049/L540010挖掘机轴承196.85x254x28.575轴NTN轴承/LL639249-LL639210挖掘机轴承196.85x241.3x23.812承NTN轴承/544090/544116挖掘机轴承228.6x295.275x33.338NTN轴承/544091/544118挖掘机轴承231.775x300.038x33.338NTN轴承/L540045挖掘机轴承196.85x254x28.5)