1. Reasonable selection of pesticides Some pesticides (such as dimethoate) are greatly affected by temperature, and their efficacy is significantly weakened with the decrease of temperature, while some pesticides (such as omethoate) are less affected by temperature, even At lower temperatures (below 15 ° C), it also exerts its normal insecticidal action. Similar to omethoate, there is also a pyrethroid, which is more toxic at low temperatures (15 ° C) than at high temperatures (25 ° C). Therefore, in winter and spring low temperature seasons to control crop pests and diseases, we must pay attention to the use of pesticides with less temperature impact. 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.
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. Thin Wall Ball Bearing,Thin Section Bearings,Thin Ball Bearing,Thin Wall Bearing Shijiazhuang Longshu Mechanical & Electrical Equipment Trading Co., Ltd. , https://www.longsbearings.com
2. Appropriately increase the dosage of pesticides in the low temperature season. Under the guidance of professionals, increase the dosage and increase the concentration of the liquid, but not exceed the “safe high concentration†(ie, the maximum allowable dose without phytotoxicity).
3. When the application temperature is high during high temperature and high temperature, the activity range and respiratory intensity of the pest increase, and the feeding amount increases. At this time, the application is beneficial to improve the control effect.
4. Improve the application method In the winter and spring season, prevent crop pests and diseases in the greenhouse, and apply the smoke method or dust method as much as possible. If the spray method is applied, the number of prevention and the amount of liquid spray should be appropriately reduced to prevent the humidity in the shed.
5. Properly extend the safe interval. In the low temperature season, the degradation rate of pesticides is slow, and the residual time in the crops is relatively long. The number of days (ie, the safety interval) of the last application of the crops must be appropriately extended to ensure food safety. (ç»®å—)
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.
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.
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