YOCH Bearing

In recent years, loader brake system failures have become an increasing trend, especially brake failure, brake system temperature rise, oil leakage from the brake pump vent, and a series of other problems. At present, almost all domestic loader service brake systems use pneumatic brake systems. Top oil caliper disc brake, the selection of brake components is generally the same as that of automobiles. There are many factors that cause the failure of the loader's braking system, such as damage to the braking components leading to braking failure. In recent years, loader braking systems have become the main factor in the upward trend. The author believes that the decline in the quality of brake fluid and brake pads is also an influencing factor. The following is a brief introduction to the effect of brake fluid on the braking performance of wheel loaders.

Tapered roller bearings are separable, and their inner ring roller cage assembly and outer ring can be separated and assembled separately. Corrected linear contact between rolling elements and raceways avoids edge stresses. Tapered roller bearings can support both high radial and axial loads. Because this type of bearing can only bear axial force on one side, it needs to be paired when used. This type of bearing is used in gear boxes and axle holding boxes.

When disassembling the spherical roller bearing for maintenance, first record the appearance of the FAG bearing, confirm the remaining amount of lubricant, and then wash the bearing after sampling the lubricant for inspection. As cleaning agents, gasoline and kerosene are generally used.

Internal stress is easily formed during plastic molding, and the stress concentration areas are prone to cracking after painting. Annealing treatment or whole surface treatment can be used to eliminate stress. The annealing treatment is to heat the ABS plastic molded parts below the heat deformation temperature, that is, 60°C, and keep it warm for 2 hours. Since the use of this process requires a large amount of equipment investment, the entire surface treatment technology can be used, that is, a solution that can eliminate the internal stress of the plastic part is prepared and the surface of the plastic part is treated for 15 to 20 minutes at room temperature.

Due to its own process requirements, this method requires that the outer or inner pipe surface be round in order to fit the composite inner and outer tubes. However, due to the incompressibility of the transmission cable and insulating material, the electrically conductive drill pipe body will be inside There is a "slight convexity" in the cable fitting part, so the pull-out composite and mechanical expansion joint composite will cause damage to the insulation and performance of the cable, and the applicability is not strong.

Common quality defects of FAG bearing parts after heat treatment include: overheating, underheating, quenching cracks, insufficient hardness, heat treatment deformation, surface decarburization, and soft spots in the quenching microstructure.

The tiltable tile bearing is composed of five arc tiles, the upper half bearing is three tiltable tiles, the lower half bearing is two tiltable tiles, the tile can tilt freely on the fulcrum, the tile can swing freely when working, forming a multi-oil wedge around the shaft neck. The lubricating oil of the bearing enters the annular channel of the bearing shell through the oil inlet at the bottom of the bearing. The lubricating oil enters the bearing tile through 5 oil holes from the annular channel. The lubricating oil is distributed along the journal and discharged from both ends of the journal to complete the cooling and lubrication effect.

For bearings used in pairs, excessive axial oil clearance can easily cause cage wear. It is necessary to regularly check the axial movement and adjust it in time. For paired bearings (tapered pairs - DB/DF), the intermediate spacer must be provided by the manufacturer, with high precision, and its main function is to adjust the axial clearance. For example, the suffix T165 means that the total length of the spacer and the bearing is 165mm.