News

• 17

  2018.01

  Application of Self Aligning Ball Bearings

  Industry application: Self aligning ball bearing is suitable for textile machines, plastic machinery, medical equipment and various industrial machinery. The characteristics of products: self-aligning ball bearings are divided into with a cylindrical bore and two conical hole two types, the material of the cage is plate, synthetic resin, etc. Its characteristic is the outer ring raceway is spherical self-aligning, with au...
• 16

  2018.01

  How to Judge Whether the Lubricating Grease Is Metamorphic

  In order to provide better performance during operation, the bearing is usually lubricated by grease , it can reduce the friction and temperature rise of the bearing. If the grease is bad , not only does it not play a role, but it is more detrimental to the use of bearings. The method of judging metamorphic grease are as follows. 1.Oil flow observation. Take two measuring cups , one is filled with lubricating oils, whi...
• 15

  2018.01

  Thrust ball bearing characteristics.

  1. There are two types: one-way and two-way. 2. Thrust ball bearing can only bear axial load. One-way thrust bearing can only bear axial load of one direction, and two-way thrust bearing can withstand the alternating axial load of two directions. 3, thrust ball bearing can not limit axial or radial movement of box, its limit rotational speed is low, the unidirectional thrust bearing can restrict the shaft or the axial ...
• 11

  2018.01

  Different States of Spherical Roller Bearings Damage

  Damage status of spherical roller bearings, such as: roller bearing ring guard card damage, as a reason to consider, lack of lubricant, not suitable for the defect of oil discharge structure, foreign invasion, bearing installation error, the deflection of the shaft is too large. 1, The Cavitation The cavitation erosion of the core roller bearing is the form of surface damage caused by the contact between the solid surface ...
• 10

  2018.01

  The Overview of Spherical Plain Bearings

  Spherical plain bearings mainly consist of a inner ring with spherical outer surface and a outer ring with inner spherical surface , it can withstand heavy load. Depending on its different type and structure , it can bear radial load, axial load , and combined load of radial and axial directions. Since its outer sphere of the inner ring is encrusted with composite materials , the bearing can produce self-lubrication at work....
• 09

  2018.01

  Using ZZ bearing have any requirements

  Preferred to have a good understanding of mechanical device used in bearing parts, premise to choose appropriate ZZ bearing, to obtain the following several aspects of the data and material: 1, Mechanical device functions and structure 2, The use of bearing parts 3, Bearing load (size and direction) 4, Rotating speed 5, Vibration and impact 6, Bearing temperature (temperature, temperature rise around) ...
• 08

  2018.01

  Bearing unit of papermaking machinery

  The bearing unit of paper machinery is the combination of special bearing for paper machinery and adapter sleeve , it is helpful to installation , position and using . Adapter sleeve can make the bearings running smoothly as an necessory of internal cone hole, and it must be high precision with longer life . Most important 4 parameters are as followings : 1 . The redial beating times of external for adapter sleeve and ...
• 05

  2018.01

  Maintenance of Bearings

  Cleaning of bearing: when removing the bearing, we first check the surface of the bearing, confirm the remaining amount of lubricant. After sampling the lubricant, wash the bearing with a cleaning agent or kerosene. The cleaning of the removed bearings is divided into coarse cleaning and fine cleaning. They are placed in containers respectively. In the coarse cleaning, if the bearing is rotated with the dirt, it will damage...
• 04

  2018.01

  The Necessity of Checking Vibration and Temperature of Bearings

  1.Bearing vibration. Bearing vibration is sensitive to bearing damage , for example , the peeling , indentation , rusting , crack , abrasion ... will be reflected in bearing vibration measurement . So, the vibration size can be measured by using a special bearing vibration parameter meter (frequency analyzer), we can infer the specific situation by the frequency distribution. The measured values are different depending on...
• 03

  2018.01

  The solution of Using ZZ tapered roller bearing fault

  The solution of Using ZZ tapered roller bearing fault in the process of the bearings Use factor is mainly refers to installation and adjustment, and use the maintenance, the maintenance and repair, etc is in accordance with the technical requirements. ZZ bearing according to installation, operation and maintenance, the maintenance requirements, on operation of circular cone roller bearings are under load, speed, worki...
• 29

  2017.12

  Advantages and Disadvantages of Rolling Bearings

  The rolling bearing is a kind of precise mechanical element that turnsthe sliding friction between the shaft and the axle seat into rolling friction,in order to reduce the friction . Ball bearings, roller bearings andneedle roller bearings all belong to the rolling bearings. Advantages of rolling bearings 1, the friction resistance and the power consumption are small,the mechanical efficiency is high, and is easy to st...
• 28

  2017.12

  The Function of Bearing Lubrication

  Lubrication has important influence on fatigue life, abrasion, temperature and vibration of rolling bearing , without normal lubrication, the bearing cannot work. Based on analysis, about forty percent of the bearing damage is related to lubrication. So good lubrication of bearing is an effective measure to reduce friction and wear. The function of bearing lubrication can be briefly explained as follows: 1. A layer of o...
• 27

  2017.11

  Import bearings selected and matters need attention

  The import bearings and the use of attention in the selected summary of rolling bearing bearing type, type and size are diverse. For the mechanical device to play out the expected performance, select the most appropriate bearing is very important. For the selected bearing, many will need analysis, from every Angle to research, evaluation on choosing the bearing program, and no special specifications, but the general order...
• 26

  2017.10

  Bearings Cleaning

  When bearings are inspected , the appearance of the bearings should first be recorded and the amount and condition of the residual lubricant should be checked . After the lubricant has been sampled for examination , the bearings should be cleaned . in general , light oil or kerosene may be used as a cleaning solution . Dismounted bearings should first be given a preliminary cleaning followed by a finishing rinse .Each ...
• 25

  2017.09

  High-speed Ball Bearings

  Usually we name a rolling bearing with a Dmn value of more than 1.0X106mm.r/min as high speed ball bearing. " Dm" is the average diameter of the rolling bearing, and " n" is the speed of the inner ring. The centrifugal force has great influence on the life and strength of rolling bearings when they are moving at high speed. Therefore, the weight of high-speed rolling bearings is often reduced to improve the high speed perfor...
• 22

  2017.08

  The Load of Bearings

  The load of bearings can be divided into static load and dynamic load . The bearing static load including constant load that doesn’t change with time and quasi-static load , it’s too slow , so that the force of inertia can be omitted. The bearing dynamic load including short - time quick impact load ( for example: air hammer), periodic changed cyclic loading( for example: the air compressor crankshaft and aperio...
• 21

  2017.07

  Improve tapered roller bearing rated load

  ZZ Bearing (Shanghai) Co., Ltd announced today, is widely used in all kinds of vehicles and industrial equipment's tapered roller bearing series product rated load will be raised by 10% on average. Through the use of advanced bearing engineering design technology, performance evaluation results confirm to the improvement of the rated load can be used for railway vehicle system and guarantee, mining and aggregate, agricult...
• 19

  2017.06

  Brief Knowledge of Insulation Bearings

  How many types of electric insulation bearings? There are many insulation bearing types, insulated angular contact ball bearings, deep groove ball bearings and cylindrical roller bearing, insulation of the angular contact ball bearing is designed based on a hybrid ceramic ball bearing; the insulation deep groove ball bearings and cylindrical roller bearing is a designed by use an outer or inner ring with a coating. Do the ...
• 18

  2017.05

  The Friction Coefficient of Bearings

  For easy comparison with sliding bearing , the rolling bearings’ friction moment can be calculated according to the inner diameter by below equation: M=uPd/2 In this equation: M : stands for friction moment , mN.m u : friction coefficient P : bearing load , N d : bearing nominal bore diameter,mm The friction coefficient “u” is greatly affected by bearing type, bearing load, rotating speed and lubr...
• 15

  2017.04

  the new techniques and bearing steel development direction in the future

  Bearing steel is mainly used to produce of rolling bearings of rolling body and rings. Since the bearing should have long life, high precision, low heat, high-speed, high rigidity, low noise, high wear resistance characteristic, therefore, ask bearing steel should have: high hardness, even hardness and high elastic limit, high contact fatigue strength, toughness, certain to its quench-hardening ability in the atmosphere, the...
• 14

  2017.03

  Life And Load Rating

  When bearings raotate , the inner and outer rings and rolling elements are constantly loaded . This produces material fatigue and eventually bearing failure . The total number of revolutions before a failure occurs is called the basic rating life . Life of individual bearings varies considerably , even if they are of the same size , same material , same heat treatment and are under the same operating conditions . Stati...
• 13

  2017.02

  Factors Affecting the Service Life of Cylindrical Roller Bearing

  ZZ Bearing (Shanghai) Co., Ltd would like to teach you the Internal and external factors affecting the service life of cylindrical roller bearing, hope to bring you some help. 1, the limitation of bearing size Usually double row cylindrical roller bearings can be installed in a restricted space. In most cases, the diameter of the shaft (or the inner diameter of the bearing) is limited by the mechanical design or other design. S...
• 12

  2017.01

  The Damage Performance of Spherical Roller Bearings

  In this article , we will introduce you some damage performance of the roller bearings. 1.The scar on the bearing race, for this kinds of damage , normally because of the lake of lubricant or the impurities get into the bearing or bearing installation error. 2.Cavitation. When the lubricating oil was in the low pressure zone of oil film, bubbles will formed in oil, once the bubbles moves to the high pressure zone, it w...
• 12

  2016.12

  Bearing seal type

  In order to make the bearing keep good lubrication conditions and normal work environment, give full play to the functions of bearing, prolong service life, to the rolling bearing must have appropriate seal to prevent leakage and dust, lubricant moisture or other dirt invading. Bearing seal can be divided into bringing seal and plus two kinds of seal. The bearing is to bring their own seal bearing itself into a manufactur...