Increase the oil passage and oil storage tank on the wheel hub welded parts, increase the oil storage volume, increase the oil injection volume from the original 150ml to 1182ml, and improve the circulation state of the lubricating oil; (2) Reform the C28 Ball Bearing original oil injection tool.
Figure l is its structure diagram. In addition, the lubricating oil in the gap between the guide wheel shaft and the shaft sleeve cannot heat the friction generated by the bearing operation because there is no oil passage, which causes the working temperature of the bearing to rise, the viscosity of the lubricating oil and the thickness of the lubricating oil film decrease.025. The guide wheel is mounted on the guide wheel shaft through a bimetal sleeve sliding bearing in the rim hole, and the two ends of the shaft are fixed on the left and right supports.
The main factors that lead to poor lubrication of the guide wheel shaft are: (1) The coaxiality of the guide wheel bimetal sleeve sliding bearing is out of tolerance ∮0. Add lubricating oil into the guide wheel cavity to ensure the lubrication and heat dissipation of the sliding bearing. 3. To this end, our company has launched a quality research and found a solution. The guide wheel is a steel plate welded structure, and its radial section is box-shaped.
The structural principle of the guide wheel of the T90 bulldozer. The guide wheels and the left and right supports are sealed by floating oil seals, and the floating oil seals and O-rings are compressed by the locking pins between the left and right supports and the guide wheel shafts. After inspection and demonstration, the guide wheel shaft is worn and the sleeve of the sliding bearing is burnt due to the lubrication state between the guide wheel shaft and the sleeve of the sliding bearing.
Tags: C28 Ball Bearing
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