Catalog: Ball and Roller Bearings
Company/Brand: NTN Corporation Japan
577 a in Ball and Roller Bearings by NTN Corporation Japan
ceramic ball angular contact ball bearings 5s-hsb type b r ... r1 r1 r ra ra d d da da a d 50 120mm boundary dimensions mm basic ... load ratings dynamic approx kn kgf rls min 1 2 bearing numbers da d ... d b rs min 1 abutment and fillet dimensions mm da max load center ... mm ras max mass kg approx cr cr min a 50 55 60 65 70 75 80 85 90 95 72 80 80 ... 601 0.363 0.636 0.384 0.86 0.55 0.901 0.577 1.18 0.604 1.23 0.837 1.28 0.837 1.63 0 ... 110 170 120 180 165 150 145 1 minimal allowable dimension for chamfer dimension r or r1 ... basic rated loads for ceramic ball angular contact ball bearings in ntn fatigue ...
por fr use por fr for values of e y2 and yo see the table below bearing numbers ... abutment and fillet dimensions mm ras da db da db ... max load constant axial center load factors mm r1as max mass kg ... approx a e y2 yo 4t-484/472 4t-jh913848/jh913811 ... 4t-744/742 4t-29688/29620 4t-568/563 4t-577/572 4t-jlm714149/jlm714110 4t-jm714249/ ... 3.04 4.23 3.66 means that load center at outside on end of inner ring ...
