Bearing steel grade Feature Application G20CrMo Low alloy carburized steel, the surface hardness after carburizing is relativelyHigh, good wear resistance, low core hardness, toughnessit is good. Suitable for making bearings resistant to impact loads andParts. It is often used as the impact resistance of cars and tractors.Impact load roller bearings, also used as steamCar gears...

A: The internal clearance of the bearing is closely related to the life, temperature rise, vibration, and noise of the bearing. Including radial oil gap and axial oil gap. The radial oil clearance is divided into five groups of 2, 0, 3, 4, and 5. Group 0 is the basic clearance, and its value increases sequentially.

A: Traditional automobile wheel bearings are composed of two sets of tapered roller bearings or ball bearings.The hub bearing unit is developed on the basis of standard angular contact ball bearings and tapered roller bearings. It combines two sets of bearings as a whole. It has good assembly performance, can omit clearance adjustment, light weight, compact structure, and load capacity. Large, sea...

A: The sliding contact surface of plain bearings is an inner sphere and an outer sphere, which can rotate and swing at any Angle when moving. (1) GE...E type: single-faced outer ring, without lubricating oil groove. It can bear radial load and small axial load in any direction.(2) GE...ES type: single-slit outer ring with lubricating oil groove. It can bear radial load and small axial load in any ...

A: The self-aligning ball bearing can bear a large radial load, but also can bear a certain axial load. The outer ring raceway of this type of bearing is spherical, so it has self-aligning performance. When the shaft is bent or tilted so that the centerline of the inner ring and the centerline of the outer ring is not more than 1°～2.5°, the bearing can still work.

First, because ceramics are almost not afraid of corrosion, ceramic rolling bearings are suitable for operation under harsh conditions full of corrosive media.Second, because the density of the ceramic rolling ball is lower than that of steel, and the weight is much lighter, the centrifugal effect of the outer ring during rotation can be reduced by 40%, and the service life is greatly extended.Thi...

A: The advantages of needle roller bearings:1. The friction resistance is small, the power consumption is small, the mechanical efficiency is high, and it is easy to start.2. The size is standardized, interchangeable, easy to install and remove, and easy to maintain.3. Compact structure, light weight, and reduced axial size. High precision, high speed, low wear and long service life.4. Some bearin...

A: 1. Insufficient bearing lubrication will cause high temperature discoloration of the bearing.2. Bearings are prone to scratches and peeling under high load and low speed applications or continuous high temperatures. This phenomenon is due to the thin or insufficient lubricating oil film that will accelerate the problem.3. The bearing rollers are overheated. The rupture of the lubricating film w...

A: Excessive lubrication of bearings, especially high-speed equipment, will generate excessive heat due to oil agitation, chemically degrade the lubricating oil, and cause bearing damage.Correct lubrication and regular maintenance can avoid bearing damage caused by lubrication problems.

A: Rolling element bearings developed on the basis of bearings. Its working principle is to replace sliding friction with rolling friction. It is generally composed of two ferrules, a set of rolling elements, and a cage. It is highly versatile, standardized, and serialized basic mechanical parts.

A: If the bearing is in a good state of continuous rotation, it will emit a low whining or buzzing sound. If there is a sharp hiss, squeak and other irregular sounds, it often indicates that the bearing is in a poor continuous rotation condition. The sharp squeaking noise may be caused by improper lubrication. Inappropriate bearing clearance can also cause metallic noise.The dents on the bearing o...

A:Wear and rust of partsThe wheel hub bearing is poorly lubricated. If the lubricating grease between the roller and the raceway is insufficient, the two will have dry friction, resulting in abnormal noise of metal friction.

A: The hub bearing unit is developed on the basis of standard angular contact ball bearings and tapered roller bearings. It combines two sets of bearings as a whole. It has good assembly performance, can omit clearance adjustment, lightweight, compact structure, and has load capacity. Large, sealed bearings can be pre-loaded with grease, omit external wheel hub seals, and are free from maintenance...

A: The choice of bearing material is determined by the designer based on the bearing working conditions and the functional requirements of the bearing parts.Rolling bearings are mainly composed of rings, rolling elements, cages and other parts. The materials of the parts can be divided into:(1) Ferrule and rolling element materials;(2) Cage material;(3) Other parts such as rivets, dust cover, seal...

A: Bearings are an important part of contemporary machinery and equipment. Its main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotation accuracy. According to the different friction properties of the moving elements, bearings can be divided into rolling bearings and sliding bearings. Among them, rolling bearings have bee...

A: Thrust ball bearing composition:The thrust ball bearing is composed of three parts: seat ring, shaft ring, and steel ball cage assembly.The shaft ring matched with the shaft is called the seat ring, and the housing ring matched with the housing.Thrust ball bearing types:　　 According to the force, it is divided into one-way thrust ball bearings and two-way thrust ball bearings. One-way th...

A: (1). Bearing cooling water is interrupted.(2). The bearing oil quality is degraded, the oil itself is not clean or the oil is degraded during operation, such as the increase of water in the oil will cause the acidity of the oil to increase, which will reduce the lubrication effect of the oil, cause the bearing bush to be corroded, and cause the bearing temperature to rise.2. Phenomenon(1). Ther...

A: Lubrication can play the following roles in rolling bearings:The formation of oil film increases the contact area and reduces the contact stress. Eliminate frictional heat, reduce the temperature of the bearing working surface, and prevent burns. Reduce the friction between metals and slow down their wear. Plays the role of dust, rust, and corrosion prevention. To ensure that the rolling bearin...

A: 1. Check with a feeler gauge to confirm the maximum load position of the rolling bearing. Insert the feeler gauge between the 180° rolling element and the outer (inner) ring. The thickness of the feeler gauge with appropriate elasticity is the bearing radial clearance. This method is widely used in self-aligning bearings and cylindrical roller bearings.2. Check with a dial indicator, first adju...

A:Bearing grease is mostly used in bearing seats, sealing structures, and places where lubrication facilities are simple and easy to maintain. To a certain extent, it can prevent the intrusion of water, gas, dust, and other impurities. It is made of base oil, thickener, and additives into a semi-solid lubricant. Among them, the base oil is a synthetic oil such as mineral oil, which mainly plays a ...

A:Tapered roller bearings are mainly subjected to combined radial and axial loads based on the radial direction. The bearing capacity depends on the raceway angle of the outer ring, the larger the angle, the greater the bearing capacity. This type of bearing is a separable bearing, which is divided into single-row, double-row and four-row tapered roller bearings according to the number of rows of ...

A: 1. With reasonable structural design and advanced nature, the bearing has a long service life.2. The metallurgical quality of the bearing material is the main factor affecting the early failure of the bearing. 3. Bearing installation conditions are still a key factor in use.

The measurement of the bearing hole can use the inner diameter gauge to check the reference size on the outer micrometer and measure the roundness and cylindricity of the bearing hole. Burning out the bearing often reduces the diameter of the bearing hole at the opening and the roundness is out of tolerance, which is extremely detrimental to the normal operation of the bearing. If the positioning ...

A: 1. Rotating load, static load or directional load is not the nature of the load applied to the bearing, but the load phenomenon observed for each deep groove ball bearing ring. When deciding the fit of the inner and outer rings, it is necessary to see whether it is a rotating load or a static load, and then determine whether to use an interference fit or a gap fit.2. The load applied to the bea...

A: Generally, the clearance of the bearing becomes smaller after use, because the reduction in clearance due to the temperature difference between the inner ring and the outer ring after the bearing is generally greater than the increase in clearance caused by the load. However, if it is an angular contact ball bearing, it depends on the size of the preload of the bearing during installation. If t...

A: Thrust bearings are divided into thrust ball bearings and thrust roller bearings. Thrust ball bearings are divided into thrust ball bearings and thrust angular contact ball bearings. The raceway ring matched with the shaft is composed of a washer with a raceway and a ball and a cage assembly, which is called a shaft ring, and the raceway ring that cooperates with the housing is called a seat ri...

A: Abnormal noise during driving: The abnormal noise is the most important symptom when the wheel bearing is damaged. Its symptom is that the vehicle will emit a "buzzing" noise during the driving process.Body shake: If the degree of damage to the bearing is too severe, resulting in an increase in the gap, the body shake will occur during the high-speed driving of the vehicle.Unstable driving: Whe...

A: Bearings are an important part of the field of machinery. In today's society, they are constantly developing and growing. When the bearings were invented, there were definitely not many. On the contrary, through the continuous development of society and science, the continuous emergence of new things makes the bearing look effective.It has also become increasingly rich and diverse.Bearings can ...

A: 1. Clearance change failureDuring the operation of the rolling bearing , due to the influence of external or internal factors, the original fit bearing clearance is changed and the...

A: 1. The dimensional requirements are different, and the dimensional deviations (inner diameter, outer diameter, ellipse, etc.) of products with high accuracy grades are smaller than those required by bearings with lower accuracy grades;2. The required value of the bearing rotation accuracy is different. The rotation accuracy (internal radial runout, external radial runout, end face raceway runou...

A: Journal bearingThe part of the shaft supported by the bearing is called the journal, and the part that matches the journal is called the bearing pad. The part made of a full cylindrical bearing is called the shaft sleeve. The upper part is called the bearing cover, the lower part The half is called the bearing housing. The cover and the seat are connected by studs, the joint surface of the two ...

A: The main alloy components of Babbitt metal are tin, lead, antimony, and copper, which are used to improve the strength and hardness of the alloy. The structural feature of the Babbitt alloy is that the hard phase particles are evenly distributed on the soft phase matrix. The soft phase matrix makes the alloy have very good embedding, compliance, and seizure resistance, and after running in, the...

A: Yes, the skateboard bearing is one of the important components of skateboard sliding. When you skate on the skateboard, the bearings make the skateboard wheels move in rotation.The ball bearing is a component that supports the shaft and is used to guide the rotation of the shaft and bear the load transmitted by the shaft to the frame. Bearings are widely used and demanding matching parts and ba...

A: The bearing of the iron cover has many uses, the main function is to prevent dust. The speed of the iron cover is higher. But because it is made of iron, it is not waterproof, but the rubber cover has greater friction, so the heat dissipation performance is also worse than that of the iron cover. And in terms of speed, the rubber cover is also lower than the iron cover. The temperature of the b...

A: The crossed roller bearing is a special type bearing with inner ring split and outer ring rotating.Crossed roller bearing applicationsPrecision rotary indexing tables for machine tools, vertical and horizontal boring machines, vertical grinders, rotary surface grinders, large gear hobbing machines, guns and radar rotary tables, large radio and optical telescopes, rotary cameras, steering pivots...

A: The factors of bearing limit speed are related to bearing type, load, accuracy, size, lubrication, clearance, cage, and cooling conditions. However, the most important factor is the working temperature or lubricant allowed by the bearing material. The limit speeds of various types of bearings are listed in the bearing size and performance table of "Rolling Bearing Product Catalog". They are det...

A: Advantage:Angular contact ball bearings can bear both radial and axial loads. It can work at higher speeds. The larger the contact angle, the higher the axial load carrying capacity. The contact angle is the angle between the contact line of the ball and raceway in the radial plane and the vertical line of the bearing axis. High-precision and high-speed bearings usually take a contact angle of ...

A: A pillow block bearing is a bearing unit that combines a rolling bearing and a bearing seat. Most outer spherical bearings are made of spherical outer diameter and are installed together with imported bearing seats with spherical inner holes. They have various structural forms, good versatility, and interchangeability.The use flexibility of the bushing is relatively high, and it can also play m...

A: 1. Load direction. Deep groove ball bearings (single row radial ball bearings) or tapered roller bearings can be used as long as they bear radial loads; single direction thrust ball bearings (angular contact bearings) are selected for axial loads only; axial loads and radial loads When alternating, choose deep groove ball bearings, tapered stick bearings, angular contact bearings.2. The load si...

A: Radial ball bearings are designed to withstand forces in a direction perpendicular to the shaft or radial loads. Some ball bearings can withstand the radial and axial loads imposed on the shaft. These combined axial / radial load bearings are realized by axial angular contact. The angle of these axial radial bearings allows axial loads and radial loads to be distributed more evenly along the ax...