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 information
| PRODUCT DEFINITION | |
|---|---|
| Brand | SNR |
| d - Internal diameter | 30 mm |
| D - External diameter | 72 mm |
| B - Bearing/Inner ring width | 19 mm |
| C - Outer ring width | 14 mm |
| T - Total width | 20,75 mm |
| d1 - External diameter inner ring | 52,4 mm |
| a - Charge load application point | 23,05 mm |
| rs - Min fillet radius | 1,5 mm |
| r1s - Min fillet radius | 1,5 mm |
| Mass | 0,392 kg |
| ISO 355 reference | T7FB030 |
| PRODUCT PERFORMANCE | |
|---|---|
| C - Dynamic load | 57,2 kN |
| A2 - Rating life coefficient | 1 |
| C0 - Static load | 59,8 kN |
| Cu - Fatigue limit load | 7,3 kN |
| e - Coefficient | 0.83 |
| Y0 - Static axial load coefficient | 0.4 |
| Y2 - Upper axial load coefficient | 0.73 |
| N ref - Reference thermal speed | 6100 tr/min |
| N lim - Mechanical Limit Speed | 10000 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) | 6,735 Hz |
| BPFI - Over rolling frequency on inner (60 rpm) | 9,265 Hz |
| BSF - Over rolling frequency on rolling element (60 rpm) | 5,404 Hz |
| BRF - Rotational frequency – rolling element (60 rpm) | 2,702 Hz |
| FTF - Rotational frequency - cage (60 rpm) | 0,421 Hz |
| ABUTMENT | |
|---|---|
| da max - Max shoulder diameter IR | 39 mm |
| db min - Min IR shoulder diameter | 38,5 mm |
| Da min - Min shoulder diameter OR | 55 mm |
| Da max - Max shoulder diameter OR | 63,5 mm |
| Db min - Min OR shoulder diameter | 68 mm |
| Ca - Min clearance | 3 mm |
| Cb - Min clearance | 6,5 mm |
| ra max - Max fillet radius | 1,5 mm |
| r1a - Max fillet radius | 1,5 mm |
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