Tapered roller bearing, pressed steel cage
The single row tapered roller bearing is available in metric dimensions (ISO 355 and JIS B 1512 standards) and in inches (ABMA standard, metric series including J). The single row in tapered roller bearing range, is the most widely used and is generally mounted in opposition.
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| PRODUCT DEFINITION | |
|---|---|
| Brand | NTN |
| d - Internal diameter | 140 mm |
| D - External diameter | 250 mm |
| B - Bearing/Inner ring width | 42 mm |
| C - Outer ring width | 36 mm |
| T - Total width | 45,75 mm |
| d1 - External diameter inner ring | 189 mm |
| a - Charge load application point | 48,5 mm |
| rs - Min fillet radius | 4 mm |
| r1s - Min fillet radius | 3 mm |
| Mass | 8,73 kg |
| ISO 355 reference | T4FB140 |
| PRODUCT PERFORMANCE | |
|---|---|
| C - Dynamic load | 465 kN |
| C0 - Static load | 570 kN |
| Cu - Fatigue limit load | 57 kN |
| A2 - Rating life coefficient | 1 |
| e - Coefficient | 0.44 |
| Y0 - Static axial load coefficient | 0.76 |
| Y2 - Upper axial load coefficient | 1.38 |
| Nlim - Oil lubrication limit speed | 1900 tr/min |
| Nlim - Grease lubrication limit speed | 1400 tr/min |
| Tmin - Min operating temperature | -40 °C |
| Tmax - Max operating temperature | 120 °C |
| ABUTMENT | |
|---|---|
| da max - Max shoulder diameter IR | 163 mm |
| db min - Min IR shoulder diameter | 158 mm |
| Da min - Min shoulder diameter OR | 219 mm |
| Da max - Max shoulder diameter OR | 236 mm |
| Db min - Min OR shoulder diameter | 237 mm |
| Ca - Min clearance | 7 mm |
| Cb - Min clearance | 9,5 mm |
| ra max - Max fillet radius | 3 mm |
| r1a - Max fillet radius | 2,5 mm |
