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Causes of bearing vibration
Author:admin Date:2022-05-11
Sliding bearings are generally referred to as plane bearings. They have a simple form and a large contact area. If the lubrication is kept well, the anti-wear performance will be very good, and the bearing life will be very long. Sliding bearings have large bearing capacity, high rotation accuracy, and lubricating film with impact resistance, so they are widely used in engineering.
The main reasons for the failure of sliding bearings are:
1. Improper bearing design and installation. Excessive speed, overload operation or impurities in the lubricating oil.
2. Under the operating conditions of high temperature, high speed and high load, the journal and the bearing pad material thermally expand, the bearing gap disappears, and the metals are in direct contact.
3. Under the action of alternating load, the bearing surface produces reciprocating tensile stress, compressive stress and shear stress, resulting in fine cracks on the bearing surface, and finally forms fatigue damage under continuous operation.
4. Birth caused by long-term operation under large amplitude. The secondary synchronization is unstable due to the misalignment of the coupling, improper operation and so on.
Specializing in manufacturing sliding bearing series products, the physical production enterprises have reached 150 million sets of production capacity, with one automatic sintering line. Enterprise technology relying on Research Institute and colleges and universities and colleges and universities and colleges and universities, constantly develop self-lubricating bearing products adapted to different working conditions and various mechanical fields. The product performance has reached the level of foreign products of the same kind. The sales of products all over more than 40 countries and regions at home and abroad, and have been recognized by domestic and foreign users. In 2006, the company passed the ISO9001 quality system certification! And there is TUV system certification!
The main products are (Du) oil-free bearings, (Dx) boundary lubrication bearings, bimetal series bearings, bimetal bush, self-lubricating bearings. The characteristic product is Du thin wall series!
There are many manifestations of sliding bearing vibration failure, including excessive bearing clearance. Oil film whirl and oil film oscillation, friction; and common bearing bush wear, bush burning, tire breakout cracks caused by fatigue and other faults. There are many reasons for the vibration of sliding bearings, most of which are caused by other mechanical problems, such as rotor imbalance, misalignment, stiffness problems, etc. The vibration caused by the sliding bearing itself is mainly caused by the stiffness reduction caused by improper fitting clearance, and the oil film problem caused by improper design and installation.
The main reasons for the failure of sliding bearings are:
1. Improper bearing design and installation. Excessive speed, overload operation or impurities in the lubricating oil.
2. Under the operating conditions of high temperature, high speed and high load, the journal and the bearing pad material thermally expand, the bearing gap disappears, and the metals are in direct contact.
3. Under the action of alternating load, the bearing surface produces reciprocating tensile stress, compressive stress and shear stress, resulting in fine cracks on the bearing surface, and finally forms fatigue damage under continuous operation.
4. Birth caused by long-term operation under large amplitude. The secondary synchronization is unstable due to the misalignment of the coupling, improper operation and so on.
Specializing in manufacturing sliding bearing series products, the physical production enterprises have reached 150 million sets of production capacity, with one automatic sintering line. Enterprise technology relying on Research Institute and colleges and universities and colleges and universities and colleges and universities, constantly develop self-lubricating bearing products adapted to different working conditions and various mechanical fields. The product performance has reached the level of foreign products of the same kind. The sales of products all over more than 40 countries and regions at home and abroad, and have been recognized by domestic and foreign users. In 2006, the company passed the ISO9001 quality system certification! And there is TUV system certification!
The main products are (Du) oil-free bearings, (Dx) boundary lubrication bearings, bimetal series bearings, bimetal bush, self-lubricating bearings. The characteristic product is Du thin wall series!
There are many manifestations of sliding bearing vibration failure, including excessive bearing clearance. Oil film whirl and oil film oscillation, friction; and common bearing bush wear, bush burning, tire breakout cracks caused by fatigue and other faults. There are many reasons for the vibration of sliding bearings, most of which are caused by other mechanical problems, such as rotor imbalance, misalignment, stiffness problems, etc. The vibration caused by the sliding bearing itself is mainly caused by the stiffness reduction caused by improper fitting clearance, and the oil film problem caused by improper design and installation.
