7210B – NTN, 50x90x20mm
Angular contact ball bearings, pressed steel cage
The single row angular contact ball bearing is designed to withstand combined loads with a predominant axial component. Installed in opposition with another bearing of the same type, it guarantees high mounting rigidity.
The NTN range is available in several variants: 30° or 40° angles, polyamide, pressed steel or solid brass cages, universal pairing available, clearances or preloads, etc.
PRODUCT DEFINITION
| Brand | NTN |
| d – Internal diameter | 50 mm |
| D – External diameter | 90 mm |
| B – Bearing/Inner ring width | 20 mm |
| a – Charge load application point | 39,5 mm |
| α – Contact angle | 40 ° |
| rs – Min fillet radius | 1,1 mm |
| r1s – Min fillet radius | 0,6 mm |
| Radial clearance class | CN |
| Mass | 0,466 kg |
PRODUCT PERFORMANCE
| C – Dynamic load | 41,5 kN |
| C0 – Static load | 28,6 kN |
| Cu – Fatigue limit load | 2,16 kN |
| N lim – Oil lubrication limit speed | 9900 tr/min |
| N lim – Grease lubrication limit speed | 6700 tr/min |
| Tmin – Min operating temperature | -40 °C |
| Tmax – Max operating temperature | 120 °C |
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