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FUJI BEARING LOCKNUTS

AXIAL IMPACT VIBRATION TEST

eliminate keyways and tab washers

AXIAL IMPACT VIBRATION TEST

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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IEC is the leading supplier of precision engineered vibration, sealing and rotating components for industry.