| Domestic and foreign models | |||
| New domestic models | 7311ACQ1/SO | ||
| Domestic old models | - | ||
| Dimensions | |||
| Inside diameter（d） | 55 | mm | |
| Outside diameter（D） | 120 | mm | |
| Thickness（B） | 29 | mm | |
| Basic Load Rating | |||
| Dynamic load（Cr） | KN | ||
| Static load（Cor） | KN | ||
| Limiting Speeds | |||
| Grease | rpm | ||
| Oil | rpm | ||
| Weight | |||
| Weight | 1.39 | kg | |
| BEARING TYPE | |||
| Type | Needle bearing | ||
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