The recent two weeks have been very uneven. Heavy rains throughout the country have caused floods and caused heavy losses in various areas. Many vehicles are immersed in rain, hit by dropped objects, painted floats, etc. There is also a lot of damage to the vehicle. In this relatively cloudy and difficult weather condition, commercial vehicles will inevitably suffer some big and minor damage and scratches. If these scratches are not well dealt with, it will be. There is a rust situation. The treatment of rust-proof work must be careful to avoid the commercial vehicle becoming a big face. 1, the weather is unpredictable throughout the year, and the commercial vehicle in the driving process, often will encounter some of the road surface, muddy road, then it will make the bottom of the commercial vehicle vehicle and the floor inside the compartment Sludge accumulation. If it is not cleaned up in time, it will make the moisture will have a hiding place. Therefore, inspections are required for parts such as the door, the bottom of the trunk, and the inside and outside of the hub. In addition, the drainage holes in various parts of the vehicle body need to be maintained in a smooth state. Check the humidity of the covering inside the commercial vehicle and avoid the occurrence of rust on the parts. 2. When many owners park a commercial vehicle in an outdoor environment, they will cover the vehicle with the vehicle when it is raining, so that when the rain falls, the inner layer of the garment will also impact repeatedly. If paint is applied to the paint, if there are many gravels in the clothes, the car paint will scratch a lot of scratches. After a long period of time, the paint will change color. 3, commercial vehicles usually common corrosion, there have been flaws, collisions, when the vehicle is in the process of driving because of the wheels of the rock up the ball hit the body, the body paint will also appear In case of flaking paint. Due to a little bit of damage, most of the business owners do not pay much attention, but after long-term neglect, when the rainy season is encountered, there will be rust in the rain, so do not inspect the commercial vehicle because of minor losses. Be sure to pay attention to the maintenance, and do a good job processing.
The Tapered Roller Bearing belongs to the separation type bearing, and the inner and outer rings of the bearing have a conical raceway. This type of bearing is divided into single, double and four row tapered Roller Bearing according to the number of the roller. The single row Tapered Roller bearing can bear the radial load and the single direction axial load. When a bearing is subjected to a radial load, an axial force will be produced, so another bearing that can withstand the axial force of the opposite direction is needed to balance it.
There is a single row tapered roller bearing outer ring, the inner ring and a conical roller by maintaining a basket frame into the inner module. The outer ring can be separated from the inner ring assembly. According to the standard of the ISO tapered roller bearing dimension, any standard type tapered roller bearing outer ring or inner ring assembly should be able to achieve international interchangeability with the same type of outer ring or inner ring assembly. For example, the outer ring of the same type should conform to the ISO492 (GB307) rule besides the external dimension and tolerance. The conical angle of the inner ring assembly and the diameter of the component cone must also comply with the relevant provisions of the interchangeability.
Tapered roller bearings are widely used in automobile, rolling mill, mine, metallurgy, plastic machinery and other industries.
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Usually, the conical angle of the outer raceway of the single row tapered roller bearing is between 10 degrees ~19 degrees, and it can simultaneously bear the joint action of axial load and radial load. The larger the cone angle, the greater the ability to bear the axial load. The bearing of the big cone angle, the postposition code plus the B, the cone angle between 25 degrees ~29 degrees, can bear a large axial load. In addition, the single row tapered roller bearing can adjust the size of the clearance during the installation process.
The outer ring (or inner ring) of a double row tapered roller bearing is a whole. The two inner ring (or outer ring) has similar small end faces, and the middle has a spacer. The clearance is adjusted by the thickness of the spacer, and the pre interference of double row tapered roller bearings can also be adjusted by the thickness of the spacer.
The performance of the four row tapered roller bearing is basically the same as that of the double row tapered roller bearing, but the radial load of the double row tapered roller bearing is greater than that of the double row tapered roller bearing, and the limit speed is slightly lower, which is mainly used for heavy machinery.
Multi seal double, four row tapered roller bearings, ZWZ provides long life, multi seal double, four row tapered roller bearings. The new design of the bearing is personalized and the traditional design method of the fully sealed bearing is changed. A new seal structure combined with seal and dust-proof is adopted to improve the sealing effect and improve the sealing performance. Compared with open structure bearings, the life of multi seal double and four row tapered roller bearings increased by 20% to 40%, and the consumption of lubricants was reduced by 80%.
