FUJI BEARING LOCKNUTS
General Information
Test Conditions
Machine – NAS high speed screw loosening tester
| Sample size | M20 x 1.0 |
| Frequency | 21Hz |
| Excitation stroke | 11mm |
| Impact stroke | 10mm |
| Vibrating acceleration of excitation table | 10G |
| Test time | 60 minutes |
| Direction of impact | Bolt axis direction |
| Clamping torque | 53.9N.m (550kgf.cm) |
Test Results
Sample Nut | Excitation Time (Minutes) 10 20 30 40 50 60 | Test Results | |
Standard bearing nut with tongued washer | Looseness Δ – x damaged washer (11 minutes) 20o | Nut came off | |
FUJI Locknut | No effect |
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