| Domestic and foreign models | |||
| New domestic models | NU344M+HJ344 | ||
| Domestic old models | 52344H | ||
| Main dimensions | |||
| Bore size（d） | 220 | mm | |
| External diameter（D） | 460 | mm | |
| Thickness（B） | 88 | mm | |
| Basic rated load | |||
| Live load（Cr） | KN | ||
| Static load（Cor） | KN | ||
| Ultimate speed | |||
| Grease | rpm | ||
| Oil lubrication | rpm | ||
| Weight | |||
| Weight | 81.6 | kg | |
| Bearing type | |||
| Type | Cylindrical roller bearing | ||
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Shandong Ruidefu Transmission Equipment Co., Ltd.