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30209-A
Tapered roller bearing
Tapered roller bearings 302, main dimensions acc. to DIN 720, separable
Main Dimensions & Performance Data
| d | 45 mm | Bore diameter |
| D | 85 mm | Outside diameter |
| B | 19 mm | Width, inner ring |
| C | 16 mm | Width, outer ring |
| T | 20.75 mm | Width, total |
| Cr | 70,000 N | Basic dynamic load rating, radial |
| C0r | 82,000 N | Basic static load rating, radial |
| Cur | 9,800 N | Fatigue load limit, radial |
| nG | 8,800 1/min | Limiting speed |
| nϑr | 5,400 1/min | Thermal speed rating |
| ≈m | 482.8 g | Weight |
Mounting dimensions
| da max | 54 mm | Maximum diameter of shaft shoulder |
| db min | 52 mm | Minimum diameter of shaft shoulder |
| Da min | 74 mm | Minimum diameter of housing shoulder |
| Da max | 78 mm | Maximum diameter of housing shoulder |
| Db min | 80 mm | Minimum diameter of housing shoulder |
| Ca min | 3 mm | Minimum axial space |
| Cb min | 4.5 mm | Minimum axial space |
| ra max | 1.5 mm | Maximum fillet radius of shaft |
| rb max | 1.5 mm | Maximum fillet radius of housing |
Dimensions
| r1, 2 min | 1.5 mm | Minimum chamfer dimension of inner ring back face |
| r3, 4 min | 1.5 mm | Minimum chamfer dimension of outer ring back face |
| a | 18 mm | Distance between the apexes of the pressure cones |
| d1 | 64 mm | Guidance rib diameter of inner ring |
Temperature range
| Tmin | -30 °C | Operating temperature min. |
| Tmax | 120 °C | Operating temperature max. |
Calculation factors
| e | 0.4 | Limiting value of Fa/Fr for the applicability of diff. Values of factors X and Y |
| Y | 1.48 | Dynamic axial load factor |
| Y0 | 0.81 | Static axial load factor |
Additional information
T3DB045 | Comparative designation to ISO 10317 and ISO 355 |
All
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