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22:06:49 GMT+0000 (Coordinated Universal Time)
K687-672
Tapered roller bearing
Tapered roller bearings K-Series, in inch sizes, separable
Frequently bought together
Main Dimensions & Performance Data
| d | 101.6 mm | Bore diameter |
| D | 168.275 mm | Outside diameter |
| B | 41.275 mm | Width, inner ring |
| C | 30.162 mm | Width, outer ring |
| T | 41.275 mm | Width, total |
| Cr | 226,000 N | Basic dynamic load rating, radial |
| C0r | 350,000 N | Basic static load rating, radial |
| Cur | 42,000 N | Fatigue load limit, radial |
| nG | 4,100 1/min | Limiting speed |
| nϑr | 3,150 1/min | Thermal speed rating |
| ≈m | 3.45 kg | Weight |
Mounting dimensions
| da max | 112 mm | Maximum diameter of shaft shoulder |
| db min | 118 mm | Minimum diameter of shaft shoulder |
| Da min | 149 mm | Minimum diameter of housing shoulder |
| Da max | 156 mm | Maximum diameter of housing shoulder |
| Db min | 160 mm | Minimum diameter of housing shoulder |
| Ca min | 7 mm | Minimum axial space |
| Cb min | 11 mm | Minimum axial space |
| ra max | 3.6 mm | Maximum fillet radius of shaft |
| rb max | 3.3 mm | Maximum fillet radius of housing |
Dimensions
| r1, 2 min | 3.6 mm | Minimum chamfer dimension of inner ring back face |
| r3, 4 min | 3.3 mm | Minimum chamfer dimension of outer ring back face |
| a | 38 mm | Distance between the apexes of the pressure cones |
| d1 | 133.2 mm | Guidance rib diameter of inner ring |
Temperature range
| Tmin | -30 °C | Operating temperature min. |
| Tmax | 120 °C | Operating temperature max. |
Calculation factors
| e | 0.47 | Limiting value of Fa/Fr for the applicability of diff. Values of factors X and Y |
| Y | 1.28 | Dynamic axial load factor |
| Y0 | 0.7 | Static axial load factor |
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