KOYO BM3520 needle roller bearings
What is KOYO BM3520 needle roller bearings in mechanical engineering? 5 Bore Diameter (mm) Manufacturing Service . Upload your CAD file for an instant. Bore Diameter (mm) 5 d 5 mm B 8 mm d2 19,5 mm d3 10 mm d4 13 mm dk 11,112 mm h1 30 mm l3 min. 12 mm l4 max.