688 Wholesale low noise plastic bearing car ceramic protection bearings skf for skates or longboard
High Quality AMERICAN BEARING MFG.CORP. 688 Wholesale low noise plastic bearing car ceramic protection bearings skf for skates or longboard. Competitive NTN Brand skf imx8 Bearing Pricing. Accept Small Order. Easy 12 mm B and Fast 0.6 mm ra max Shipping.
What is 688 bearing interchange？
| Brand Name: | SKF |
| Model Number: | 688 |
| Bearing number: | 678A |
| Size (mm): | 8x12x2.5 |
| Bore Diameter (mm): | 8 |
| Outer Diameter (mm): | 12 |
| Width (mm): | 2,5 |
| d: | 8 mm |
| D: | 12 mm |
| B: | 2,5 mm |
Product Details
| Bearing number | 678A |
| Size (mm) | 8x12x2.5 |
| Bore Diameter (mm) | 8 |
| Outer Diameter (mm) | 12 |
| Width (mm) | 2,5 |
| d | 8 mm |
| D | 12 mm |
| B | 2,5 mm |
| C | 2,5 mm |
| r min. | 0,1 mm |
| da min. | 8,8 mm |
| da max | 9,1 mm |
| Da max. | 11,2 mm |
| ra max. | 0,1 mm |
| Weight | 0,75 Kg |
| Basic dynamic load rating (C) | 0,515 kN |
| Basic static load rating (C0) | 0,252 kN |
| (Grease) Lubrication Speed | 38 000 r/min |
| (Oil) Lubrication Speed | 45 000 r/min |
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