VEHICLE TWO-STEP FINAL DRIVE Russian patent published in 1995 - IPC

FIELD: mechanical engineering. SUBSTANCE: final drive has spur gear 2 right-hand support of which is made up of two taper roller bearings installed in X-type manner. Preload of taper roller bearings 5,6 to provide their stability and efficiency is adjusted outside final drive housing by means of nut 8, lockwasher 11 and locknut 14. In process of adjustment nut thrusts against larger end face of outer bearing cup and provides optimum value of preload from point of view of efficiency and bearing service life. Then lockwasher 11 is installed on nut 8 to prevent its turning. Locknut 14 is turned onto nut tailpiece to ensure reliability of threaded joint exposed to operating loads. Locknut 14 thrusts against end face of bearing sleeve 7. EFFECT: enhanced reliability of final drive owing to enhanced manufacturability and accuracy of adjustment of preload. 1 dwg