1. Common fat damage: When deep-turning soil and deep-ditch fertilization, the organic fertilizer is too large or the organic fertilizer is too concentrated, or the organic fertilizer is not fermented and fermented, causing burning roots; excessive, excessive or Excessively concentrated application of urea, potassium nitrate, ammonium sulfate, ammonium bicarbonate and other quick-acting fertilizers, causing burning of roots; when topdressing outside the roots, the concentration of fertilizer is too high, causing the leaves to be anxious and dry; improper long-term fertilization, deepening the soil The acidification or alkalization is caused by the excessive acidity and alkalinity of the soil solution; the soil organic matter is less, the soil is sticky and too compact, the applied fertilizer is not easy to spread quickly, and the local concentration of the fertilizer is too high and the root is damaged; Unqualified fertilizers are also prone to fat damage.
2, prevention methods: In order to prevent the occurrence of fertilizer damage, according to the cause of the occurrence of fertilizer damage, take appropriate preventive measures. For fertilizer damage that may occur due to deep soil turning and deep open ditch application of organic fertilizer, it may be adopted to prepare fine manure, uniformly fertilize, mix the manure, and water after fertilization; for fertilizer damage that may occur due to chemical fertilizer, Adopting reasonable fertilizer varieties due to the nature of the soil, balancing fertilization, controlling the amount of chemical fertilizers, and applying less each time, mastering the principle of “small number of timesâ€, more ditching, widening the ditch and evenly spreading, with water Into the method of prevention; for the fat damage caused by fertilization outside the root, we must choose a safe type of fertilizer, strictly control the use concentration (generally 0.3-0.5%) and the use period, time, avoid spraying at high temperature and other methods to prevent; For the fat damage caused by excessive soil compaction, it should be prevented by deep-turning the ground, adding organic fertilizer, and returning straw to the field. It is strictly forbidden to buy and use fake and fake fertilizers.
The UCF pillow block mounted bearing series has four bolt holes, and a set screw lock is designed for mounting onto bearing surfaces parallel to the shaft axis, such as conveyor belts. This ready-to-mount unit has solid base cast iron housing, chrome steel bearings, and is designed for efficient operation at a wide range of speeds. This one-piece pillow block housing allows for a stationary outer ring and rotating inner ring. Insert bearing maintains the separation between moving parts to reduce rotational friction, and to support radial and axial loads. The bearing is secured to the shaft with set screws to prevent slippage. This mounted bearing is used in food and beverage manufacturing, textile industry and many other industrial manufacturing.
Pillow blocks are usually referred to the housings which have a bearing fitted into them & thus the user need not purchase the bearings separately. Pillow blocks are usually mounted in cleaner environments & generally are meant for lesser loads of general industry. These differ from "plummer blocks" which are bearing housings supplied without any bearings & are usually meant for higher load ratings & corrosive industrial environments. However the terms pillow-block & plummer-block are used interchangeably in certain parts of the world.
However fundamental application of both types is the same which is to primarily mount bearings safely enabling their outer ring to be stationary while allowing rotation of the inner ring. The housing is bolted to a foundation through the holes in the base. Bearing housings are either split type or unsplit type. Split type housings are usually two piece housings where the cap and base can be detached. While certain series are one single piece housings. Various seals are provided to prevent dust and other contaminants from entering the housing. Thus the housing provides a clean environment for the expensive bearings to freely rotate hence increasing their performance and duty cycle.
Bearing housings are usually made of grey cast iron. However various different grades of metals can be used to manufacture the same.
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Shijiazhuang Longshu Mechanical & Electrical Equipment Trading Co., Ltd. , https://www.lsjgbearing.com