Plant growth regulators make plants stronger and enhance their antiviral ability through the regulation of crop growth and development; some plant growth regulators have direct poisoning effects on viruses. For example, O. 000 1% cytokinin wettable powder 400 ~ 600 times solution. Spraying 10 days after tobacco transplanting, spraying once every 7 days, a total of 3 sprays, can reduce tobacco mosaic disease, and increase production.
Spraying with sodium naphthalate acetate solution at a concentration of 20 mg/L can alleviate the disease of pepper and cucumber virus.
Sprayed with a concentration of 1 000 mg / liter of chlormequat, from the tomato seedling stage (3 true leaves to the first inflorescence before flowering), spray once every 7 days, a total of 3 times, can reduce the viral disease. Under the environmental conditions of high temperature, high humidity and poor ventilation of the protected area, the tomato plants can be inhibited from being elongated, the stems are thick, the internodes are shortened, the leaves are dark green, and the yield is increased.
Plant growth regulators are used to control plant virus diseases. In addition to being used alone, they are more complexed with viricides and serve as a icing on the cake.
Thin wall ball bearings are simple in structure and easy to use. Mainly used to bear radial load, but when the radial clearance of the bearing is increased, it has a certain performance of Angular Contact Ball Bearing and can bear combined radial and axial load.
When the speed is high and thrust ball bearings are not suitable, thin wall ball bearings can also be used to bear pure axial loads. Compared with other types of bearings of the same size, this type of bearing has a small friction coefficient and a high limit speed. But it is not impact resistant and not suitable for heavy loads.
Thin wall ball bearings have a bearing inner diameter and outer diameter ratio less than a specified value. The ratio of bearing outer diameter to bearing inner diameter is 1.25 or less. It is called thin wall ball bearings, which means that the outer diameter-inner diameter value of the bearing is very small and the bearing wall is very thin.
The precision required by thin wall ball bearings is very high, because the wall is very thin, so the weight it can carry is also very low, and the impact resistance is very poor, so this must be selected according to the use environment!
Characteristics
The specific use of thin wall ball bearings:
Model airplanes, remote control cars, machine tools, motors, water pumps, agricultural machinery, textile machinery, laser printers, instruments, measuring instruments, electronic accessories, motors, motors, etc.
Welcome to contact me to get the price of thin wall ball bearings!
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Shijiazhuang Longshu Mechanical & Electrical Equipment Trading Co., Ltd. , https://www.lsjgbearing.com