| da min. | 75 mm |
| Da max. | 115 mm |
| D1 | 78 mm |
| Bearing number | 54415U |
| Width (mm) | 135 |
| r min. | 2 mm |
| T | 135 mm |
| d | 75 mm |
| ra max. | 2 mm |
| Outer Diameter (mm) | 160 |
Abec vs. Skate Rated™ - Support - Bones Bearings
The ABEC rating system includes grades 1,3,5,7, and 9. The higher the ABEC rating, the tighter the tolerances are, making the bearing a more precision part
The ABEC Myth | Transworld SKATEboarding
Jul 13, 2002 - The ABEC rating system uses odd numbers, ranging from 1 to 9. The higher the number, the tighter the tolerance of the bearing, and thus, the
Abec 9 Skateboard Bearings | Lily Bearing
Abec-9 has been the highest grade in bearing industry. The Abec 9 rollerblade bearing can be applied to any harsh conditions with high speed requirements
ABEC scale - Wikipedia
There are five classes from largest to smallest tolerances: 1, 3, 5, 7, 9. The higher ABEC classes provide better precision, efficiency, and the possibility of greater
Bullseye Bearings ABEC 9 Skateboard ...
The Bullseye ABEC 9 bearing is best for very fast speeds and high precision. For example, if you wanted to achieve high speeds in a downhill style skate, these