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06:46:10 GMT+0000 (Coordinated Universal Time)
K12580-12520
Tapered roller bearing
Tapered roller bearings K-Series, in inch sizes, separable
Frequently bought together
Main Dimensions & Performance Data
| d | 20.638 mm | Bore diameter |
| D | 49.225 mm | Outside diameter |
| B | 19.845 mm | Width, inner ring |
| C | 15.875 mm | Width, outer ring |
| T | 19.845 mm | Width, total |
| Cr | 36,500 N | Basic dynamic load rating, radial |
| C0r | 38,000 N | Basic static load rating, radial |
| Cur | 4,350 N | Fatigue load limit, radial |
| nG | 15,900 1/min | Limiting speed |
| nϑr | 11,200 1/min | Thermal speed rating |
| ≈m | 0.185 kg | Weight |
Mounting dimensions
| da max | 26 mm | Maximum diameter of shaft shoulder |
| db min | 28 mm | Minimum diameter of shaft shoulder |
| Da min | 41 mm | Minimum diameter of housing shoulder |
| Da max | 42 mm | Maximum diameter of housing shoulder |
| Db min | 45 mm | Minimum diameter of housing shoulder |
| Ca min | 3 mm | Minimum axial space |
| Cb min | 3.5 mm | Minimum axial space |
| ra max | 1.6 mm | Maximum fillet radius of shaft |
| rb max | 1.6 mm | Maximum fillet radius of housing |
Dimensions
| r1, 2 min | 1.6 mm | Minimum chamfer dimension of inner ring back face |
| r3, 4 min | 1.6 mm | Minimum chamfer dimension of outer ring back face |
| a | 13 mm | Distance between the apexes of the pressure cones |
| d1 | 35.2 mm | Guidance rib diameter of inner ring |
Temperature range
| Tmin | -30 °C | Operating temperature min. |
| Tmax | 120 °C | Operating temperature max. |
Calculation factors
| e | 0.32 | Limiting value of Fa/Fr for the applicability of diff. Values of factors X and Y |
| Y | 1.86 | Dynamic axial load factor |
| Y0 | 1.02 | Static axial load factor |
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