Bangkok Belt & Industry Centre Sdn. Bhd. (246665-W)
NTN BEARING 1208
NTN BEARING 1208
NTN BEARING 1208
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Type: Double-row, self-aligning ball bearing with cylindrical (straight) bore, open design (no seals)
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Dimensions: 40 mm inner diameter (bore) × 80 mm outer diameter × 18 mm width
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PRODUCT DEFINITION
| Brand | SNR |
| d – Internal diameter | 40 mm |
| D – External diameter | 80 mm |
| B – Bearing/Inner ring width | 18 mm |
| d1 – External diameter inner ring | 54 mm |
| D1 – Inner diameter outer ring | 67,1 mm |
| rs – Min fillet radius | 1,1 mm |
| Radial clearance class | CN |
| Precision class | P0 |
| Mass | 0,417 kg |
PRODUCT PERFORMANCE
| C – Dynamic load | 18,9 kN |
| C0 – Static load | 6,5 kN |
| Cu – Fatigue limit load | 0,3 kN |
| e – Coefficient | 0.22 |
| Y0 – Static axial load coefficient | 3.01 |
| Y1 – Lower axial load coefficient | 2.87 |
| Y2 – Upper axial load coefficient | 4.44 |
| N ref – Reference thermal speed | 8600 tr/min |
| N lim – Mechanical Limit Speed | 11000 tr/min |
| Tmin – Min operating temperature | -40 °C |
| Tmax – Max operating temperature | 120 °C |
BEARING FREQUENCIES
| BPFO – Over rolling frequency on outer ring (60 rpm) | 7,279 Hz |
| BPFI – Over rolling frequency on inner (60 rpm) | 9,721 Hz |
| BSF – Over rolling frequency on rolling element (60 rpm) | 6,747 Hz |
| BRF – Rotational frequency – rolling element (60 rpm) | 3,374 Hz |
| FTF – Rotational frequency – cage (60 rpm) | 0,428 Hz |
