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Scroll surface materials stripping, showing a clear punch shape
Reason:
1. KOYO bearings in their work load is too large.
Bearings subjected to loads exceeding the limit load at work.
2. improper installation.
KOYO bearings do not tilt in place or installed at installation time, bearing a non-functioning.
3. precision of the shaft or housing does not meet requirements.
Precision of the shaft or housing does not meet requirements, resulting in poor contact with the bearing (less interference and contact surface and shape and position tolerance of the variance the variance).
4. Clearance is too small
Clearance is too small, the rolling card running resistance, rotation and revolution cannot be achieved.
5. Foreign bodies from entering into
There are foreign bodies entering the KOYO bearings, bearing in operation when the obstruction open-close.
6. Unbalanced load
Excessive axial force on bearing, bearing a non-normal operation (ball bearing rolling element is not in the gully, a list of rolling element bearing spherical roller bearings).
7. High ambient temperature
Decline in hardness caused by abnormal high temperature bearings.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 7334ADF NSK | 170 | 360 | 72 |
| 7234BDF NSK | 170 | 310 | 52 |