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Bearing use and storage
Source: China Bearing Network Time: 2014-09-15
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1) Adhere to the hygiene of the bearing and its surroundings. 2) Careful and careful when using it. If it is used, the thick and large leaves will give the bearing a severe impact; the bearing will be scratched, indented, cracked and so on.
3) Use suitable things 4) Pay attention to the rust prevention of the bearing to avoid use in wet places; and do not let the sweat get on; wear gloves.
5) The operator should understand the bearing 6) the operating specification of the proposed bearing operation a, the storage b of the bearing, the removal of the bearing and its surrounding c, the inspection of the dimensions and processing quality of the equipment part, the operation of the equipment e, the inspection of the equipment f , open the job g, protect the protection (timed view)
h. Smoothing agent The bearing of the bearing is coated with excessive anti-rust oil and packaged with anti-rust paper; only the package is not damaged; the quality of the bearing will be ensured.
However, when storing for a long time; it is intended to be kept at a temperature of less than 65% and a temperature of about 20 degrees Celsius; it should be stored on a shelf 30cm above the ground. Others; {TodayHot} storage places should avoid direct sunlight or The icy wall touches.
Precautions for the equipment of the bearing 1) Preparation of the bearing Because the bearing has been rust-proofed and packaged; therefore, do not open the package before the equipment.
Others; the anti-rust oil coated on the bearing has an outstanding smooth function; the bearing for general use or the bearing filled with smooth grease; can be used directly without cutting off. However, the bearing for exterior or the bearing for high-speed rotation; The oil is removed to wash away the rust-proof oil; the bearing is simply rusted; it can't be placed for a long time.
2) Inspection of the shaft and the outer casing to remove the bearing and the outer casing; acknowledge the burrs left by the scratches or machining. There must be no abrasive (SiC, Al2O3, etc.) sand or chips in the outer casing.
Secondly, check whether the scale, shape and processing quality of the shaft and the outer casing can match the drawing.
Before the bearing of the equipment; apply the mechanical oil on the cooperation surface of the qualified shaft and the outer casing.
Bearing equipment method The bearing equipment method varies with bearing type and cooperation conditions.
Because the shaft is generally rotated; therefore, the inner ring and the outer ring can be separated from each other by using interference cooperation and clearance; and when the outer ring is rotated; the outer ring is used for interference cooperation.
(1) Pressing equipment Pressing equipment generally uses a press; bolts and nuts can also be used; hand hammers can be used when necessary.
(2) The hot-sleeve device heats the bearing in the oil to expand it, and then the hot-sleeve method on the shaft can prevent the bearing from being subjected to unnecessary external force; the equipment operation is completed in a short time.
Heating matters:
1) Do not exceed 100 degrees Celsius for general heating.
2) Do not allow the bearing to touch the bottom of the oil groove.
Other hot-sleeve equipment can also use induction heating equipment to heat the bearing to make it swell and then on the shaft.
When the bearing is disassembled, the time is required to view or replace the parts; the bearing needs to be disassembled. Generally, the shaft and the bearing box must be continuously used; the bearing is also often used continuously. Therefore, the structural design should take into account the disassembly of the bearing; {HotTag} To damage bearings, shafts, bearing housings and other parts; together with proper disassembly, when disassembling the static cooperation ferrule; only pull the tension on the ferrule; do not pull the ferrule through the tumbling body .
The protection of the bearing is to make the bearing fully play and insist on its proper function for a long time; it is necessary to do the timing protection (timely viewing).
After proper timing review; early detection of problems; avoiding accidents in the first place; important for improving productivity and economy.
1. Remove the bearing when it is removed. First make a record of the appearance by shooting. Others; recognize the amount of smoothing agent and sample the smoothing agent; then remove the bearing.
a. The removal of the bearing is divided into rough washing and fine washing; and the metal mesh frame can be placed on the bottom of the used container.
b. When rough washing; remove the smooth grease or adhesive with a brush at the top of the oil. If you change the bearing in the oil at this moment; pay attention to the rolling surface due to foreign matter damage.
c, fine washing; gradually change the bearing in the oil; must be carefully carried out.
The general use of the scavenger is neutral non-aqueous diesel or kerosene; depending on the demand, it is also sometimes used as a warm lye. No matter which kind of scavenger is used;
Immediately after eradication; apply anti-rust oil or anti-rust grease to the bearing.
2, view and discriminate in order to determine whether the removed bearing can be used from the beginning; to focus on its scale accuracy, rotation accuracy, internal clearance and cooperation surface, raceway surface, support frame and seal ring.
Regarding the results of the inspection; can be judged by the use of the bearings or the bearings.
The specification of the discrimination differs depending on the mechanical function and importance and the viewing period. If there are the following damages, the bearings must not be used from the beginning; it is necessary to replace them.
1) Cracking and shortcomings of bearing components.
2) Stripping of the rolling surface of the raceway surface.
Bearing fault identification methods are not opened for inspection; it is possible to identify or guess whether the bearing in the operation is faulty; it is very important for improving productivity and economy.
The primary identification method is as follows:
1) After the sound is recognized, it is necessary to identify the sound through the sound. It is necessary to go through ample practice to identify the sound of the bearing and the non-bearing sound. For this reason, it should be done by a special person. Use a listener or The sound bar is attached to the casing to clearly hear the sound of the bearing.
2) The method of identification by the operating temperature is a comparative method; it is only used in occasions where the working conditions are not changed. For this reason; it is necessary to record the temperature continuously. When the problem occurs; not only the temperature rises; The rules change.
3) After the smoothing agent is identified, the smoothing agent is sampled and analyzed; whether the turbidity can be mixed with foreign matter or metal powder, etc. This method is especially useful for bearings or large bearings that cannot be closely investigated.
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