News

• 08

  2021.04

  Basic Performance Requirements of Steel for Rolling Bearings

  The performance of rolling bearings In the actual use of rolling bearing parts, they often have to work at high speed for a long time under complex stress states such as stretching, compression, bending, shearing, alternating and high-stress values. Whether the materials used to manufacture rolling bearings are suitable or not will have a great impact on their service performance and life. The basic method of select...
• 07

  2021.04

  Commonly Used Positioning Method Of Bearing Ring

  1. Positioning of ZZ bearing inner ring When installing the inner ring of the bearing on the shaft, the position of the bearing is generally fixed on one side of the shaft shoulder, and the other side is fixed with a nut, a stop washer or a spring-ring. The dimensions of the contact part of the shaft shoulder and the axially fixed parts with the inner ring of the bearing can be determined according to the installation...
• 01

  2021.04

  What Are the Reasons For Bearing Steel Ball Cracking

  What is bearing steel ball cracking Steel ball is a total bearing load of ball bearing, the roller is one of the important components of bearing, but we are in the process of using bearings, often find bearing steel ball cracking phenomena, such as: bearing steel ball wear trace, bearing steel ball has obvious extrusion, partial defects of bearing steel ball, steel ball bearings in cracks and steel ball surface sp...
• 31

  2021.03

  How To Extend ZZ Bearing Service Life

  Why solve the problems caused by high-speed bearing operation Wear and tear naturally occur overtime for any bearing. For parts used in high-speed applications, the negative effects of wear and tear can become a major issue much sooner. High-speed applications create a pair of problems for your bearing’s wellbeing: more heat and friction. Without proper planning and precautions, the added heat and friction caused by...
• 29

  2021.03

  Spindle Bearing Wear and Repair

  In the coffee grounds processing workshop, the operation of the spindle of the 2# press was abnormal. After the shutdown inspection, it was found that the inlet of the equipment entered the steel pipe, and the interaction between the main shaft blades and the filter wall caused a deep defect in the broken mesh wall, resulting in the entire main shaft. The axial displacement is formed. Due to the large torque force, the axial...
• 25

  2021.03

  Common Materials for Rolling Bearings

  The inner and outer rings and rolling bodies of rolling bearings should have high hardness, contact fatigue strength, good wear resistance and impact toughness. They are generally made of chromium manganese high carbon steel (pitting resistance), and the commonly used materials are GCr15 bearing steel, GCr15SiMn bearing steel, GCr6 bearing steel, GCr9 bearing steel, etc. After quenching, the hardness is not less than 61HRC-6...
• 24

  2021.03

  Preventive Measures Of Sliding Bearing Shaft Hung

  Analysis on the Causes of Sliding Bearings Holding Axle (1) The lubricating oil and sliding bearing oil pool have impurities, dirt, and poor oil cleanliness. When the oil ring rotates with the main shaft, the oil supply system starts to work. Impurities and dirt enter between the main shaft and the sliding bearing along with the lubricating oil. The gap between the main shaft and the sliding bearing is generally 0.03-0....
• 22

  2021.03

  About the purpose of bearing preload

  The main purpose of preload and representative examples are as follows: ⑴Improve the guiding accuracy of the bearing. Spindle bearings and measuring instrument bearings of machine tools. ⑵ Improve rigidity. Bearings for main shaft bearings of machine tools and pinion gears of automobile differential mechanisms. ⑶ Reduce vibration and noise during operation. Bearings for small motors. ⑷ Prevent the rolling e...
• 18

  2021.03

  Heat Treatment Method and Process of ZZ Bearings

  The heat treatment process generally includes three processes of heating, heat preservation and cooling, sometimes only two processes of heating and cooling, these processes are interrelated and uninterrupted. The heating process during heat treatment Heating is one of the important processes of heating. There are many heating methods for metal heating. First, charcoal and coal are used as heat sources, and then ...
• 17

  2021.03

  ZZ Angular Contact Bearing Assembly

  Why increase the preload of the bearing set Under normal circumstances, the contact angle of the assembled angular contact ball bearings is the same. The following is the allowable external axial load of the preload introduced by ZZ Bearing (Shanghai) Co., Ltd. When the axial load exceeds the rated requirement, some bearings will be unloaded, causing the ball Slippage and cause early bearing failure. In order to avoid the ...
• 15

  2021.03

  Eight Factors Of Bearing Heating

  There are many reasons that cause the bearing temperature to be too high. ZZ Bearing (Shanghai) Co., Ltd has sorted out several common problems for everyone. 1. Poor lubrication Lubrication has an important impact on the service life of the bearing and friction, wear, vibration, etc. Good lubrication is a necessary condition to ensure the normal operation of the bearing. According to statistics, about 40% of bearing d...
• 11

  2021.03

  The Different Knowledge of ZZ Bearings

  Bearing, as an essential part of mechanical products, plays an important role in supporting the rotating shaft. According to the different tribological properties of bearings, bearings are divided into rolling friction bearings (rolling bearings) and sliding friction bearings (sliding bearings). The two kinds of bearings have their own characteristics in structure and advantages and disadvantages in performance. When choosin...
• 10

  2021.03

  Damage Mode of Outer Ring of ZZ Deep Droove Ball Bearing

  Damage to the outer ring of a bearing is a common form of failure and a relatively high proportion of failures. As the main parts of mechanical equipment, ZZ bearings will directly affect work efficiency when they fail. Therefore, many bearing damages are more concerned. However, when the outer ring of the bearing is damaged, many people do not know the degree of damage to the outer ring of the bearing. What measures shoul...
• 08

  2021.03

  Waviness and Noise of Tapered Roller Bearing

  Overview oftapered roller bearing Reducing bearing noise is an urgent problem to be solved in the bearing industry in improving bearing quality. The main factor affecting the noise of tapered roller bearings is the waviness of the bearing groove surface and the surface of the steel ball. Waviness is caused by vibration in the grinding process, so it is necessary to study the relationship between vibration and sk...
• 04

  2021.03

  Insulation Bearings for The Motor

  Overview ofinsulated bearing Many maintenance masters will know that the motor should rotate with insulating bearings at the non-driving end, because when the insulating bearings are not used after the motor starts to rotate at a little speed, the shaft voltage, and shaft current will be generated, and the bearing current will make the bearing produce high temperature, which will lead to serious damage to the bearing. A...
• 03

  2021.03

  ZZ Bearing Structure and Process Design

  1. The role of ZZ bearing end cover As one of the very important mechanical parts, the bearing end cover is the main external part of the bearing seat, and its use is very wide. The main working surface of this part is the outer circular surface of the left and right end faces and the left end face. The general function: Axial positioning of the outer ring of the bearing; Dust-proof and sealed, in addition to ...
• 01

  2021.03

  Why is my bearing suddenly making excessive noise

  What causes a bearing to be noisy? If your bearing has suddenly started making noise during operation, there is a problem with your bearing. The excess noise that you’re hearing is created when the raceways of the bearing have become damaged, causing the rolling elements to bounce or rattle during rotation. There are many different causes of a noisy bearing but the most common is contamination. It could be that c...
• 25

  2021.02

  Tapered Roller Bearing Installation Failure

  When tapered roller bearings are in use, in the process of maintenance and repair, the disassembly and assembly of the bearings is an important link. In many cases, the tapered roller bearings will be seriously damaged in the process of installation if they are improperly installed, leading to the inability to use them. Such as bearing small flange fracture fault, this fault is commonly seen in a fault when the bearing is in...
• 25

  2021.02

  Common factors and solutions for motor bearing overheating

  Bearing overheating when the motor is running is a common fault, and its causes are various, and sometimes it is difficult to accurately diagnose. Therefore, in many cases, if the treatment is not timely, the result is often greater damage to the motor. The life of the motor is shortened, which affects work and production. When the motor bearing temperature exceeds 95°C and the rollerbearing temperature exceeds 80°C, ...
• 25

  2021.02

  What are the differences between high speed bearings and low speed bearings

  Bearings are the most important part of modern industry, and their performance technology will directly affect the development of certain fields. In our daily lives, we will keep in touch with bearings (such as those required by automobiles, machinery and equipment) to make these equipment run better. As bearings are used in different fields, their classification will be different. Overview of high-speed bearings and...
• 24

  2021.02

  Use of ZZ Bearings In Automobiles

  Overview of ZZ bearings ZZ bearings also have a leading position in the car's drive-by-wire technology.ZZ collaborated with car manufacturers to develop the revolutionary Filo and Novanta concept cars, equipped with ZZ's mechatronic steering and braking systems. Through a further emphasis on wire control technology, ZZ also manufactures an all-electric forklift, which is an electromechanical integrate...
• 24

  2021.02

  Quality analysis and judgment after bearing assembly

  The quality indicators of the bearing assembly are mainly: general requirements, accuracy tolerances, extensive values, vibration and noise, filling amount, etc. Among them, the appearance quality and rotation flexibility is a qualitative indicator, which requires the constant accumulation of experience to achieve a high judgment analysis level. Dimensional accuracy is extremely different Inner diameter, the...
• 24

  2021.02

  Bearing performance requirements and quality inspection of bearing operation

  Overview of bearings The bearing is composed of an inner, outer ring, a rolling body (ball, roller or roller) and the holder's four parts, and the rest are composed of bearing steel in addition to the holder. When the bearing is working, the bearing, the outer ring, and the bearing rolling body have a high frequency and becoming effective. The working conditions of the bearing are very complicated. The load is...
• 23

  2021.02

  The purpose of roller bearing pre-tightening and the direction of bearing pre-tightening

  What is bearing pre-tightening? The pre-tightening of roller bearings refers to the initial pressure and pre-deformation between the roller body of the bearing and the inner and outer rings when the bearing is installed, so as to keep the inner and outer rings of the bearing in a state of compression so that the bearing operates under the condition of negative clearance under the working load. What is the purpose of...