Overall dimensions (mm)
| d | 8 |
| D | 28 |
| B | 9 |
| B1 | 9 |
| γ(min) | 0.3 |
| γ1(min) | 0.3 |
Rated speed min-1
Grease lubrication
Z·ZZ
V·VV | 28000 |
| D·DD | 22000 |
| Oil lubrication Z | 34000 |
Bearing number
| Open type | 638 |
| Dust cover type | 638ZZ1 |
Non-contact
Sealed | VV |
| Contact sealed | DD |
Installation size (mm)
| da（min） | 10 |
| db(max） | 12.8 |
| da(max） | 26 |
| Db(min) | 22.8 |
| γa（max） | 0.3 |
| γb(max） | 0.3 |
Weight (g) (reference)
| Open type | 28.3 |
| Dust cover type | 28.6 |
Description
JAPAN KONKEN SEIKO CO.,LTD Professional sales 638, 638 related information: model 638 inner diameter 8 outer diameter: 28 thickness: 9 series: Metric Series Internal Diameter 5-9 mm, want to know more about 638 related information, you can conduct online consultation or call the hotline, we will serve you in detail.
638 wide range, 638 mainly used in construction machinery, machine tools, automobile, metallurgy, mining, mining, oil, machinery, power, railway and other industries, the company sold 638 price is reasonable, look forward to cooperation with you.
