Analysis of bearing wear in small four-wheel tractor

Source: China Bearing Network Time: 2014-01-09

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The small four-wheel tractor is difficult to turn or the bottom cannot turn; there are two conditions: one, can only go straight; the bottom can not turn. The primary reason is that the differential planetary gear shaft is stuck with the two planetary gears; Loss of differential effect; the tractor can't turn; can only travel straight. Solution: First replace the new differential planetary gear shaft and two planetary gears; and the thrust washers of the two planetary gears; replace the gear oil together. Second, the tractor insists on straight or turning. The main reason is that the roller bearing quality on the steering gear assembly is unqualified. The roller is dropped between the worm gear and the worm, and also because of long-term use; the bearing wear is severe; even the falling frame The worm wheel and the worm card are compared with the shoal shovel. W. Solution: Disassemble the steering gear assembly; replace the upper and lower single-row radial ball bearings together; and clean the steering gear parts; write the calcium base from the head Grease. When replacing the bearing, carefully check whether the bearing has fine cracks, etc. The tractor should be used to check and adjust the axial clearance of the bearing regularly; avoid excessive voids. To severe bearing wear.

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