NSK-TAC B系列高精度機床軸承 NSK-TAC B系列高精度機床滾珠絲杆支撐用推力角接觸球軸承,精度P4(C)級,接觸角為60°有:15TAC47B,17TAC47B,20TAC47B ,25TAC62B,30TAC62B,35TAC72B,40TAC72B,40TAC90B,45TAC75B ,45TAC100B,50TAC100B,55TAC100B ,60TAC120B