Select a different country or region to see content for your location.
United States
17:35:13 GMT+0000 (Coordinated Universal Time)
KM12649-M12610
Tapered roller bearing
Tapered roller bearings K-Series, in inch sizes, separable, adjusted or in pairs
Replaces
KM12649.M12610
Product information
Main Dimensions & Performance Data
| d | 21.43 mm | Bore diameter |
| D | 50.005 mm | Outside diameter |
| B | 18.288 mm | Width, inner ring |
| C | 13.97 mm | Width, outer ring |
| T | 17.526 mm | Width, total |
| Cr | 37,500 N | Basic dynamic load rating, radial |
| C0r | 39,000 N | Basic static load rating, radial |
| Cur | 4,500 N | Fatigue load limit, radial |
| nG | 15,800 1/min | Limiting speed |
| nϑr | 10,000 1/min | Thermal speed rating |
| ≈m | 169.32 g | Weight |
Mounting dimensions
| da max | 27.5 mm | Maximum diameter of shaft shoulder |
| db min | 29.5 mm | Minimum diameter of shaft shoulder |
| Da min | 44 mm | Minimum diameter of housing shoulder |
| Db min | 46 mm | Minimum diameter of housing shoulder |
| Ca min | 4 mm | Minimum axial space |
| Cb min | 3.5 mm | Minimum axial space |
| ra max | 1.3 mm | Maximum fillet radius of shaft |
| rb max | 1.3 mm | Maximum fillet radius of housing |
Dimensions
| r1, 2 min | 1.3 mm | Minimum chamfer dimension of inner ring back face |
| r3, 4 min | 1.3 mm | Minimum chamfer dimension of outer ring back face |
| a | 11 mm | Distance between the apexes of the pressure cones |
| d1 | 34.5 mm | Guidance rib diameter of inner ring |
Temperature range
| Tmin | -30 °C | Operating temperature min. |
| Tmax | 120 °C | Operating temperature max. |
Calculation factors
| e | 0.28 | Limiting value of Fa/Fr for the applicability of diff. Values of factors X and Y |
| Y | 2.16 | Dynamic axial load factor |
| Y0 | 1.19 | Static axial load factor |