YOCH Bearing

Check whether the model specification is consistent with the requirements of the drawing, including the size of the anchor bolt hole, the size and position of the positioning pin hole

The paintable phosphating film is porous, uniform and fine, and the paint penetrates into the pores to increase the adhesion of the coating. At the same time, the modified low-zinc film can resist the corrosion during the electrophoresis process of electrophoretic paint and enhance the electrophoresis effect. These are all beneficial to improving the corrosion resistance of the phosphating film + organic coating of the coating product. The corrosion resistance of the steel surface after phosphating is 2 times higher than that of direct coating without phosphating. The effects of phosphate coating on coating are as follows.

The thermostat fails. For a YZ10B road roller, the water chamber under the water tank felt very cold when inspecting it, indicating that the cooling water was not fully circulated. After dismantling and inspecting the thermostat, it was found that there were ice cubes in the thermostat, which prevented the main valve from opening, causing the cooling water to be unable to circulate widely.

The crankshaft bearing and crankshaft journal are worn, causing the matching gap between the two to become larger and causing a knocking sound.

Reasons for the temperature increase of IKO bearings: (1). The bearing cooling water is interrupted. (2) Oil quality deteriorates, the oil itself is not clean or the oil deteriorates during operation. For example, the increase in moisture in the oil will cause the acidity of the oil to increase, which will reduce the lubrication effect of the oil, cause the bearing bush to be corroded, and cause the bearing temperature to rise.

Warm reminder: Among engine main shaft bearings, roller rod bearings only bear the radial load of the rotor, while ball bearings bear not only radial loads but also axial loads. The working conditions are much worse than roller rod bearings. In order to reduce the load on the ball bearing and improve the reliability of the engine, a roller bearing can be placed side by side on the ball bearing. The roller bearing is used to bear the radial load, and the ball bearing only bears the axial load. This greatly reduces the load on the ball bearing and improves its working conditions.

The shape of the grinding wheel is ensured by the roller. The dressing of the grinding wheel is easy and time-saving. It is suitable for grinding wheels with large holes (large abrasive grains) to grind smaller ferrules and dissipate heat quickly, but the surface roughness of the processed workpiece is poor;

Contact fatigue failure refers to failure caused by alternating stress on the working surface of the bearing. Contact fatigue spalling occurs on the working surface of NTN bearings, and is often accompanied by fatigue cracks. It first occurs from the maximum alternating shear stress below the contact surface, and then expands to the surface to form different spalling shapes, such as pitting or pitting spalling. , peeling off into small flakes is called shallow peeling. Due to the gradual expansion of the peeling surface, it often extends to deep layers, forming deep peeling. Deep spalling is a fatigue source of contact fatigue failure.