Parts Number
Inquiry
Product Information
Designations
7228A
Boundary Dimensions
| d | 140 | mm | Bore diameter |
| D | 250 | mm | Outside diameter |
| B | 42 | mm | Width |
| r(min.) | 3 | mm | Chamfer Dimension |
| r1(min.) | 1.1 | mm | Chamfer Dimension |
Basic Load Ratings
| Cr | 275 | kN | Basic Dynamic Load Rating |
| C0r | 234 | kN | Basic Static Load Rating |
Speeds
| Grease | 3900 | min-1 | Limiting Speed |
| Oil (Oil-air) | 5200 | min-1 | Limiting Speed |
Abutment and Fillet Dimensions
| da(min.) | 154 | mm | Diameter of Shaft Abutment |
| Da(max.) | 236 | mm | Diameter of Housing Abutment |
| Db(max.) | 243 | mm | Diameter of Housing Abutment |
| ra(max.) | 2.5 | mm | Radius of Shaft or Housing Fillet |
| rb(max.) | 1 | mm | Radius of Shaft or Housing Fillet |
Others
Performance
| Pa | 150 | kN | Permissible Axial Load |
Preload,Rigidity(DB and DF arrangement)
| Preload | Axial Rigidity | Measured axial clearance | |
| EL | 573N | 352N/μm | -5μm |
| L | 4992N | 751N/μm | -36μm |
| M | 11447N | 1022N/μm | -65μm |
| H | 15522N | 1149N/μm | -80μm |
Mass
| 7.97 | kg | Mass(approx.) |
