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United States
02:29:48 GMT+0000 (Coordinated Universal Time)
31308-XL
Tapered roller bearing
Tapered roller bearings 313, main dimensions to DIN ISO 355 / DIN 720, separable, adjusted or in pairs
Thay thế
31308-A, 31308-A-T29B
Thông tin về sản phẩm
Main Dimensions & Performance Data
| d | 40 mm | Bore diameter |
| D | 90 mm | Outside diameter |
| B | 23 mm | Width, inner ring |
| C | 17 mm | Width, outer ring |
| T | 25.25 mm | Width, total |
| Cr | 93,000 N | Basic dynamic load rating, radial |
| C0r | 83,000 N | Basic static load rating, radial |
| Cur | 12,300 N | Fatigue load limit, radial |
| nG | 9,600 1/min | Limiting speed |
| nϑr | 5,100 1/min | Thermal speed rating |
| ≈m | 0.72 kg | Trọng lượng |
Mounting dimensions
| da max | 51 mm | Maximum diameter of shaft shoulder |
| db min | 49 mm | Minimum diameter of shaft shoulder |
| Da min | 71 mm | Minimum diameter of housing shoulder |
| Da max | 81 mm | Maximum diameter of housing shoulder |
| Db min | 86 mm | Minimum diameter of housing shoulder |
| Ca min | 4 mm | Minimum axial space |
| Cb min | 8 mm | Minimum axial space |
| ra max | 2 mm | Maximum fillet radius of shaft |
| rb max | 1.5 mm | Maximum fillet radius of housing |
Dimensions
| r1, 2 min | 2 mm | Minimum chamfer dimension of inner ring back face |
| r3, 4 min | 1.5 mm | Minimum chamfer dimension of outer ring back face |
| a | 30 mm | Distance between the apexes of the pressure cones |
| d1 | 67.7 mm | Guidance rib diameter of inner ring |
Temperature range
| Tmin | -30 °C | Operating temperature min. |
| Tmax | 120 °C | Operating temperature max. |
Calculation factors
| e | 0.83 | Limiting value of Fa/Fr for the applicability of diff. Values of factors X and Y |
| Y | 0.73 | Dynamic axial load factor |
| Y0 | 0.4 | Static axial load factor |
Additional information
T7FB040 | Comparative designation to ISO 10317 and ISO 355 |