In addition, 63 Series Ball Bearings can also be seen that the oil hole on the crankshaft cracks and causes the fracture. Breaking of connecting rod: There are several situations: connecting rod screw is broken, and the reasons are: plastic deformation of connecting rod screw after long-term use; poor contact between screw head or nut and the end face of the big end produces eccentric load, which can be as large as the bolt. Compressor accident fracture accident crankshaft fracture: most of the fractures are at the transition between the shaft journal and the crank arm. If due to negligence in design, sloppy manufacturing and operational reasons , Fracture occurs more often., and the temperature exceeds the specified value as overheating.
Combustion and explosion accidents often produce carbon deposits in oil-lubricated compressors. If there is no problem in ensuring design, processing, and material, the pre-tightening force during installation must not be too large, otherwise the piston rod will break when the maximum force reaches the yield limit. In order to prevent combustion and explosion, it is necessary to plan maintenance and regularly clean the grease on the gas storage tank and pipeline.
The main reasons for bearing overheating are: uneven fitting of bearing and journal or too small contact area; bearing deflection and crankshaft bending and twisting; lubricating oil viscosity is too small, the oil circuit is blocked, the oil pump is faulty and the oil is cut off, etc.. Due to lack of operating knowledge, the valve from the compressor to the gas storage tank was not opened after driving, resulting in a sharp increase in exhaust pressure and explosion
The tension of the air conditioner compressor belt and make adjustments. Simultaneously carry out the maintenance project every 100h and 250h; replace the fuel filter element; check the height of the rotary pinion grease (with grease); check and clean the radiator fins, oil cooler fins and cooling fins; replace the hydraulic oil Filter element; replace the oil in the final transmission case (only for the first time at 500h, and once after 1000h); clean the air filter element inside and outside the air conditioner system; replace the hydraulic oil vent filter element. 1.The purpose of regular maintenance of excavators is to reduce machine failures and extend machine service life; shorten machine downtime; improve work efficiency and reduce operating costs. ⑥ Maintenance items every 500h.) from being mixed in; the oil label should be selected according to the ambient temperature and purpose
Tags: 63 Series Ball Bearings
robotbestbearing