| Domestic and foreign models | |||
| New domestic models | 637-2Z | ||
| Domestic old models | 80037 | ||
| Main dimensions | |||
| Bore size（d） | 7 | mm | |
| External diameter（D） | 26 | mm | |
| Thickness（B） | 9 | mm | |
| Basic rated load | |||
| Live load（Cr） | 1.55 | KN | |
| Static load（Cor） | 1.95 | KN | |
| Ultimate speed | |||
| Grease | 26000 | rpm | |
| Oil lubrication | 32000 | rpm | |
| Weight | |||
| Weight | 24 | kg | |
| Bearing type | |||
| Type | Deep Groove Ball Bearing | ||
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Shandong Ruidefu Transmission Equipment Co., Ltd.