51130L1 日本NTN机床主轴轴承 81104T2,51130L1重量,51130L1尺寸,51130L1参数,4T-749A/742型号尺寸，4T-749A/742轴承价格,4T-749A/742采购 CM-UCT213D1货期价格,CM-UCT213D1图纸参数,CM-UCT213D1采购交期,,