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68450/68712
Inch Single Row Tapered Roller Bearings
Dimensions: Bore (Inner) Diameter: 4.5000 "； Outer Diameter: 7.1250 "； Width (Thickness): 1.3750 ";
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Product Attributes
| Product Number | 68450/68712 |
| Bore diameter | 4.5000 " |
| Outside diameter | 7.1250 " |
| Total width | 1.3750 " |
| Shoulder diameter of inner ring | 5.6693 " |
| Widthof inner ring | 1.2500 " |
| Width of outer ring | 1.0000 " |
| Chamfer minimum dimension of inner ring (r1,2) | 3.5 mm |
| Chamfer minimum dimension of outer ring (r3,4) | 3.3 |
| Distance side face to pressure point (a) | 39 |
| Basic dynamic load rating (Cr) | 227 |
| Basic static load rating (Cor) | 280 |
| Fatigue load limit (Pu) | 30 |
| Reference speed | 2800 r/min |
| Limiting speed | 3400 r/min |
| Mass | 2.95 kg |
| Limiting value (e) | 0.5 |
| Axial load factor (Y) | 1.2 |
| Axial load factor (Y0) | 0.7 |
| Maximum diameter of shaft abutment (da) | 129 mm |
| Minimum diameter of shaft abutment (db) | 129 mm |
| Minimum diameter of housing abutment (Da) | 158 mm |
| Maximum diameter of housing abutment (Da) | 167 mm |
| Minimum diameter of housing abutment (Db) | 170 mm |
| Minimum width of space required in housing on large side face (C | 4 mm |
| Minimum width of space required in housing on small side face (C | 9.5 mm |
| Maximum Radius of shaft fillet (ra) | 3.5 mm |
| Maximum Radius of housing fillet (rb) | 3.3 mm |
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