Along with the reform of rural areas and the transfer of land, the agricultural production organization model is undergoing profound changes. It is particularly manifested in the rapid rise of new agricultural management entities such as large-scale farms, family farms, agricultural cooperatives, large farm machinery, and large agricultural planters (specialized households). With the agricultural planting and management model, the problem of food concentration and rapid drying is more urgent than ever before, which has also led to the rapid expansion of the drying equipment market.
On March 25, 2015, Premier Li Keqiang presided over the executive meeting of the State Council, deployed and accelerated the implementation of "Made in China 2025" to realize the upgrading of manufacturing machinery for agricultural machinery and equipment. Miao Wei, Minister of the Ministry of Industry and Information Technology, said that we are not yet a manufacturing powerhouse for agricultural machinery and equipment, there is no large number of key enterprises with international competitiveness, and major technologies and agricultural machinery and equipment for industrial development urgently need to be broken through. Completing the transformation from a manufacturing powerhouse prepared for agricultural machinery to a powerhouse, smart manufacturing will be the main thrust.
The agricultural machinery and equipment that are one of the ten major areas for the “Made in China 2025†development need to promote the integrated development of producer services and manufacturing, and increase the manufacturing level and core competitiveness of agricultural machinery and equipment.
In the early 50's, China imported food series dryers and drying towers (rooms) from the former Soviet Union, and carried out the domestic design and manufacturing of drying towers. Although there are many forms, the basic structure is basically the same. The drying towers are all dried with high-temperature strong winds, and the drying process is carried out by drying the corn with hot air of downstream, countercurrent and mixed flow. The existence of a large volume of drying equipment, heat exchanger outside the tower heat exchanger, thermal energy loss, hot air is a one-time use rate, low utilization of thermal energy, hot air power consumption, waste heat can not be used and other issues. After drying, the quality of the corn is poor, and the drying time is long. The drying temperature is not easy to control. After the drying, the corn is broken and cracked seriously, resulting in increased losses in the circulation.
The drying of corn needs to maintain its original color, aroma, taste, shape and nutrient composition. It is necessary to eliminate problems such as solute loss, surface hardening, and quality degradation in the traditional drying process of corn; the cis-reverse circulating-flow low temperature corn drying tower can achieve The three goals of quality, energy saving and environmental protection provide a brand-new solution for low-cost, high-quality drying of corn and have a strong market competitiveness.
Angular contact ball bearing can withstand both radial load and axial load. Able to work at a high speed. With larger contact angle, the axial capacity of the bearing will be higher. High precision and high speed bearings usually have a 15 degree contact angle. The contact Angle will increase under axial force.
Angular contact ball bearing accuracy class includes dimensional tolerance and rotation precision.The precision is expressed as P0(ordinary), P6(P6X), P5, P4 and P2.In addition, the European and American brands also use P3, P7 and P9 to indicate the accuracy level. P3 is the P6 level of ISO and JIS standard, P7 is equivalent to P4, P9 is equivalent to P2.
Double row angular contact ball bearing application are: oil pump, roots blower, air compressor, all kinds of transmission, fuel injection pump, printing machinery, planetary reducer, extraction equipment, cycloid reducer, food packaging machinery, electric welding machine, electric, square box, gravity type spray gun, wire stripping machine, axle shaft equipment, chemical machinery, testing analysis equipment.
Angular Contact Ball Bearing sets:
Angular contact ball bearing most common series names are below:
718 Series
719 Series
H719 Series
70 Series
H70 Series
B70 Series
72 Series
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Angular Contact Ball Bearing
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