| Domestic and foreign models | |||
| New domestic models | N421M | ||
| Domestic old models | 2421H | ||
| Dimensions | |||
| Inside diameter（d） | 105 | mm | |
| Outside diameter（D） | 260 | mm | |
| Thickness（B） | 60 | mm | |
| Basic Load Rating | |||
| Dynamic load（Cr） | KN | ||
| Static load（Cor） | KN | ||
| Limiting Speeds | |||
| Grease | rpm | ||
| Oil | rpm | ||
| Weight | |||
| Weight | 17.7 | kg | |
| BEARING TYPE | |||
| Type | Aligning ball bearing | ||
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