基本尺寸 型號
Model
d[mm]D[mm]B[mm]
15mm27mm16mm NK19/16
0mm26mm20mm NK18/20
0mm26mm16mm NK18/16
0mm25mm20mm NK17/20
0mm25mm16mm NK17/16
12mm24mm20mm NK16/20
12mm24mm16mm NK16/16
0mm23mm20mm NK15/20
20mm26mm16mm BK2016
18mm24mm16mm BK1816
22mm28mm12mm BK2212
20mm26mm12mm BK2012