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Why Choose Us

Professional team

Rich experience

We are well talented in precise manufacturing of metal parts and fragile material parts for semiconductor trade. We have professional production lines and workers. Metals include aluminum, stainless steel and fragile materials include ceramic, quartz and silicon.

Our Certificates

Chinsor has been certified as Jiangsu new high-tech enterprise, Wuxi Technical Center, Jiangsu SMEs and so on.

Competitive Price

Manufacturer place your order directly to the factory, no intermediate cost, more fast delivery, better service and economical cost.

What is Bearing

Bearings are "parts that assist objects' rotation". They support the shaft that rotates inside the machinery.Machines that use bearings include automobiles, airplanes, electric generators and so on. They are even used in household appliances that we all use every day, such as refrigerators, vacuum cleaners and air-conditioners.Bearings support the rotating shafts of the wheels, gears, turbines, rotors, etc. in those machines, allowing them to rotate more smoothly.In this way, all sorts of machines require a great many shafts for rotation, which means bearings are almost always used, to the point where they have become known as "the bread and butter of the machine industry". At first glance, bearings may seem like simple mechanical parts, but we could not survive without bearings.

04-709847-01 Bearing Seal Assy
04-709847-01 Bearing Seal Assy . 2nd Source New. Novellus Varian 3290.

Benefits of Bearing

Greater Precision
Bearings provide extreme radial and axial rotational precision.Since there is no mechanical contact, wear is minimal, ensuring accuracy remains constant over time. Bearing spindles, by their manufacturing construction, are inherently accurate in rotation.Special manufacturing techniques enhance this accuracy to give extreme rotational and axial precision. bearing spindles have been designed to achieve rotational accuracy of less than 0.1 microns TIR in both axial and radial directions.As there is no mechanical contact between the rotating shaft and the static support, there is nothing to wear out, ensuring the accuracy remains constant over time-an important feature for manufacturers using statistical process control.

High Speed
Low shear forces within the bearing allow extremely high rotational speeds with minimal loss of power and very low heat generation. Speeds can exceed 300,000 rpm. bearings have low fractional drag, permitting high speed whilst retaining very low vibration levels. The frictional resistance to rotation of an bearing is very small and, subsequently, the loss of power and heat generation is also very small. This allows the shaft to be run at very high surface speeds.

Increased Tool Life
The use of bearings means tool life can be greatly extended.The lack of vibration and high rotational accuracy means drills, cutters, grinding wheels and boring tools have a much longer life-reducing maintenance and running costs. In particular, in the PCB drilling industry where drill diameters as small as 50 microns are now used, only bearing spindles are capable of running at the required speeds to ensure acceptable tool life.

Improved Surface Finish
The accurate, repeatable motion given by bearing spindles gives a superior surface finish.For applications, such as semiconductor processing, Bearing spindles provide a smooth, accurate, repeatable motion-resulting in a better surface finish. Unlike ball bearing spindles, Bearing provide constant bearing stiffness, ensuring minimal subsurface fracture in machining of hard materials.As the stiffness is produced by the uniform flow of air through the bearing, the reaction forces experienced by the shaft from an external load is constant at all points of its revolution.This property is particularly relevant to the production of good surface finish when grinding. 

Types of Bearing

Deep-Groove Ball Bearings

Like its name, deep-groove ball bearings contain deep grooves in inner and outer raceways to hold the balls. This simple design makes it versatile and applicable in various applications, from electric motors to gearboxes and water pumps.Consequently, deep groove bearings can handle heavier loads and are suitable for high-speed rotations. The compact structure also facilitates the efficient use of space within the machinery or systems. However, they are sensitive in case of misalignment possibility.

Self-Aligning Ball Bearings

This type of ball bearing contains a cage structure with two rows of balls at a uniform distance between the outer and the inner race. In case of any static or dynamic misalignment, the outer race allows to adjust the bearing position accordingly to correct it.The prime advantage of self-aligning ball bearings is that they can self-correct the angular misalignment for seamless operation. They are also good at shock and vibration absorption. On the other hand, the complexity increases the bearing cost, and they have limited load capability.

Angular-Contact Ball Bearings

In the angular contact ball bearing, balls transfer the forces from the outer to the inner ring at a specific angle (the contact angle). It is possible with a displacement of races to each other. That's why, angular types of bearings are also known as angled bearings. Moreover, they can handle higher loads and are compatible with high-speed operations.Although single-row, double-row, and sealed options make angular contact bearing versatile, it can possess higher friction at higher contact angles.

Thrust Ball Bearings

Thrust ball bearings are simple and low-cost bearings for axial loads. Their structure involves balls in a cage surrounded by two rings, the inner race typically connects the rotating shaft. Consequently, they come in two variations: Single direction and double ball bearing thrust bearings. In double-direction configurations, the balls remain in an alternating pattern or position between the rings.These thrust bearings can accommodate high-speed axial loads. They are also simple to install and cost less than the other bearings.

Application of Bearing

Automotive
Fewer machines contain more rotating parts than the standard automobile. A wide range of components — such as the engine, driveshaft, driveline, wheels, and steering column — make use of some type of ball bearing. These bearings help to enhance vehicle performance and boost efficiency by lessening the demands on the brakes while the vehicle is in motion. Bearings also allow the vehicle to readjust when traversing over rough terrain, and dampen shocks and vibrations from sudden braking activity. Automobiles make use of several types of bearings, including tapered roller bearings, deep groove bearings, and thrust bearings.

Construction
In the construction industry,bearings are used in a type of earthquake-resistant building technology known as base isolation. With this system, a building's foundation is fitted with large, frictionless bearings. This allows the structure to be isolated from the foundation by the bearings, ensuring optimal construction stability. When ground movement occurs due to seismic motion, the foundation and the bearings move while imparting little to no motion to the superstructure. Since the building experiences less movement, seismic design requirements are reduced, allowing for enhanced safety and more economical structural designs.

Food and beverage
In the food and beverage industry, bearings are used throughout different phases of manufacturing processes. For example,bearings are responsible for moving various products from one part of a facility to another, often at high speeds and with high degrees of accuracy. Bearings also play an essential role in process automation and are critical for improving overall cost efficiency. Food and beverage conveyors, slicers/dicers, and forming/filling machines all rely on bearings. Any bearings used in this industry must meet stringent hygiene standards while being able to withstand extreme temperatures and washdowns from corrosive chemicals.

Electrical power
Most modern electricity generation methods involve the use of electromagnetic induction, which entails moving a conductor relative to a magnetic field in order to produce electricity.Bearings are frequently used to facilitate the rotational movements that generate electricity in turbines. These bearings can also be found in other equipment such as pumps, compressors, and electric motors in coal-fired, wind, and hydroelectric power plants. And in

Parts of a Standard Bearing

Inner Ring
The Inner Ring is the smaller of the two bearing rings. It has a groove on its outer diameter to form a raceway for the balls. The surface of the outside diameter path is finished to extremely tight tolerances and is honed to be a very smooth surface. The inner ring is mounted on the shaft and it is the rotating element.

Outer Ring
The Outer Ring is the larger of the two bearing rings. On the outer ring, there is a groove on its inside diameter to form a pathway for the balls. It also has the same high-precision finish as the inner ring. The outer ring is usually held stationary.

Cage (Retainer)
The purpose of the cage in bearings is to separate the rolling elements, maintain a constant spacing between the inner and outer rings, accurately guide the rolling elements in the path during rotation, and to prevent the rolling elements from falling out.

Lubrication
The lubricant is an integral part of a bearing's standard components. Lubrication is added to reduce friction losses in bearing between inner and outer rings.

Other Optional Bearing components
The other additional components shields and seals enhance the performance and life of the ball bearing. These optional components are added to the bearing as per the customer's requirement to increase the performance of the bearing.

Shields
The shield is a stamped, profiled sheet metal disc. The shield is pressed into a very small groove on the inside edge diameter of the outer ring. A small space or gap remains open between the outside diameter of the inner ring and shield.

Seals
The seal is also inserted into the very small groove on the inside, edge diameter of the outer ring. The inner edge of the seal is molded into a specifically designed lip configuration.

How to Choose Bearing

Load
There are several ways to measure bearing load. Radial load is put on the shaft at the right angle. Axial load is a way to measure forces that act in the same direction as the shaft. Radial and axial loads can work together to make a moment or combined load in a system. A bearing must be able to handle all three types of loads over their expected range.

Tolerance
ISO and JIS standards determine how well cylindrical roller bearings with spacers fit and how well they turn. It is best to use paths with an accuracy level of 5 or higher in machines that need to work with high precision and speed. Machines that need to run with high accuracy can use deep groove ball bearings, radial thrust ball bearings, or cylindrical roller bearings.

Speed
Every bearing is made to work well at a specific range of speeds. A system that moves fast will need different bearings than one that moves at a slow rate. High-speed bearings must keep working safely even if they are slightly out of alignment, which can have a much more significant effect when turning quickly.

Temperature
To get the most out of a system that rotates, you need to know how temperature changes affect its parts. Journal bearing can add a lot of heat to a system, and how they react to heat from other factors is also very important. The bearing's lubrication must be set to the temperatures at which the bearing will be used.

Rotation Accuracy
Most journals bearing 0-level tolerance bearings are enough to meet the needs of the host. However, when the accuracy of the shaft's rotation is critical, such as in machine tool spindles, precision machinery, and instruments, higher tolerance deep groove ball bearings should be used.

Rigidity
This amount of change is minimal and can be ignored most of the time. However, in some machines, like machine tool spindle systems, the static and dynamic stiffness of the bearing has a significant effect on how the system works.

Friction torque
Ball bearings have less resistance to friction than roller bearings. The friction resistance is low when a pure radial load is put on a radial contact bearing. Friction resistance is common when a pure axial load is placed on an axial contact bearing.Choosing journal bearing is not finished until the long-term industrial maintenance services are examined.

Process of Bearing

Material Selection
High-quality steel, such as high carbon chromium steel, is the most common material used for making ball bearings due to its high strength and resistance to wear. Other materials such as stainless steel, ceramics, and even some plastics might be used depending on the bearing's application requirements.

Forging or Casting
The chosen material is either forged or cast into the shape of the bearing components. Forging involves heating and shaping the steel, aligning its grain structure to enhance durability. Alternatively, casting, less common but used for larger or complex parts, involves molding molten metal into the desired shape.

Heat Treatment
The forged or cast parts undergo heat treatment to enhance their hardness and durability. The parts are heated to a high temperature, then cooled rapidly in a process known as quenching, followed by tempering, where the parts are re-heated to a lower temperature and then cooled slowly. This process creates a balance between hardness for wear resistance and toughness to resist impact loads.

Machining, Grinding & Super Fine Grinding
The heat-treated parts are then machined and ground to their final dimensions with high precision. Machining processes can include turning, milling, and drilling, all performed using computer-controlled machines for accuracy. Super Fine Grinding is performed to achieve the right sphericity and surface finish, ensuring smooth and efficient operation.

Assembly and Lubrication
Finally, the inner and outer rings, balls, and cage are assembled into a bearing, and lubricant is applied to reduce friction and wear between the moving parts, ensuring the bearing operates smoothly and efficiently. The type of bearing lubricant, either oil or grease, depends on the application.

How to Maintain Bearing

Handle and store correctly

To avoid contaminants including moisture, dust or dirt entering the bearing, they should be handled and stored correctly. Firstly, bearings should be stored horizontally in their original packaging in a clean, dry and room temperature environment. When bearings are unnecessarily handled, for example, if their wrappings are prematurely removed, this can expose them to corrosion or contaminants. Bearings are delicate components and should be treated with care. As such, components that have been dropped shouldn't be used as this could lead to premature failure.

Use specialist tools

Additionally, appropriate equipment should be used when handling bearings. Tools that are not specialised for use during the bearing mounting and dismounting process can cause unnecessary damage, denting and wear. Bearing pullers or induction heaters for example, are designed specifically for bearings.

Check the bearing housing and shaft

Inspect the physical condition of the housing and shaft prior to mounting the bearing. Use a soft cloth to wipe the surfaces clean, before familiarising yourself with the correct mounting method.

Mount correctly

You should use the correct method when mounting your bearings and this varies depending on the type of bearing and type of fit. Radial ball bearing rings can be mounted with a variety of fits from sliding fits to tight press fits, depending on the type of load, the speed and vibration levels. Applying pressure to the wrong ring when fitting can result in damage to the rolling elements. Equally, excessively loose or excessively tight fits, a poor finish on the bearing seats or out of round shafts or housings should also be avoided.

Get your lubrication right

One of the leading causes of bearing failure is lubrication failure. This encompasses using the incorrect lubricant, as well as using too much or too little lubrication. The correct lubricant is chosen by considering the environmental conditions, temperature, speed and load.A bearing specialist will be able to advise on a suitable lubrication match and can control bearing lubrication to within a few milligrams. So, if you require a low, normal or high grease fill, you'll be safe in the knowledge that your lubrication won't cause problems later down the line. Another way to ensure you're getting your lubrication right is to invest in an automatic lubrication system. This system delivers the correct amount of lubrication and the right time, making sure your equipment is properly lubricated at all times.

Avoid temperatures outside the bearing's range

If a steel bearing is heated above the limit that it is designed for, this can permanently deform or soften the bearing material, resulting in a reduced load carrying capacity and leading to equipment failure. Choosing a bearing that is suitable for your temperature operating range is the first step. During regular maintenance, look out for discolouration of the rings, rolling elements and cages, as this could indicate overheating. This can be the result of excessive operating temperatures and improper lubrication and requires your attention quickly.

Our Factory

Chinsor has a team master the core technology in this filed. Dedicated to supply of semiconductor flm physical deposition, chemical deposition and etching of precision parts, focusing on precision machining and parts surface treatment. We provides 2nd source new parts of PVD, CVD, ETCH field.We are well talented in precise manufacturing of metal parts and fragile material parts for semiconductor trade. We have professional production lines and workers. Metals include aluminum, stainless steel and fragile materials include ceramic, quartz and silicon.

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FAQ

Q: How long is a bearing good for?

A: Wheel bearings have an average lifespan of 136,000 to 160,000 km (approximately 85,000 to 100,000 miles). This is only a rule of thumb though, the actual lifespan of a wheel bearing depends on the quality of the wheel bearing and the operating conditions.

Q: Do bearings need time to break in?

A: Why is Breaking In Your Bearings Important? For grease lubricated bearings, the break-in procedure is as important for the grease placement as it is for the bearing races. Proper greasing will place the grease between the balls and the raceway(s).

Q: What you need to know about bearings?

A: Bearings are "parts that assist objects' rotation". They support the shaft that rotates inside the machinery. Machines that use bearings include automobiles, airplanes, electric generators and so on.In practice, bearing clearances are generally in the range 10 to 100 μm and the manufacturing tolerances required to achieve clearances in the mid- to high end of the range are well within the capability of many manufacturing companies.

Q: How do you know when a bearing has enough grease?

A: Check the grease level by pressing on the edge of the spring-loaded piston. If you can move or rock the piston, the hub has enough grease. Don't add anymore. If the piston doesn't move, you need to add more grease.

Q: What is the maximum life of a bearing?

A: The basic dynamic load rating is either pure radial (for radial bearings) or central axial load (for thrust bearings) of constant magnitude in a constant direction, under which the basic rating life of 1 million revolutions can be obtained, when the inner ring rotates while the outer ring is stationary, or vice versa.

Q: How do bearings go bad?

A: If water, mud, road salt, or sand gets past the seal and touches the bearings, it will contaminate the grease, causing the bearings to wear down, eventually leading to failure prematurely. Ignoring worn-out wheel bearings can damage the vehicle's constant velocity joint (CV joint) or automatic transmission.

Q: Can you overgrease a bearing?

A: Overgreasing by applying too much grease to a bearing at one time can result in a seal failure and generate heat in the bearing housing. When too much grease is pumped into a bearing cavity, it eventually will become full. If there is no relief port on the housing, the grease will blow through the seals.

Q: Does bearing grease go bad?

A: Most of today's lubricants are quite stable and a bearing lubricated with grease with a synthetic base oil should have a storage life of between 24 and 60 months, or longer. Guidelines for bearings used in regulated industries, such as aviation, are more stringent.

Q: What does 2RS mean on a bearing?

A: 2 rubber seals
The 2RS stands for 2 rubber seals. One on each side of the bearing. So the RS denotes only one side is sealed with a rubber seal and the other is exposed and not sealed. The rubber seal is simply a rubber coating placed over a metal cover to assist in preventing contaminates from entering the bearing.

Q: How do you calculate tolerance of a bearing?

A: Measure all points near the outer ring's face in one circle during one revolution while keeping the inner ring still. The bearing is then turned over and the other side of the outer ring is checked. Take the largest measurement away from the smallest to get the face runout/OD bore tolerance.

Q: What bearing is best for high speeds?

A: Like cylindrical roller bearings, needle bearings can come with or without a cage. If they have a cage then they can withstand a very high speed, while a needle bearing without a cage can support a very significant radial or axial load.

Q: What is the basic knowledge of bearings?

A: In order to select the most appropriate bearing for design of machinery, it is necessary to consider from a comprehensive point of view such as machine use conditions, required performance, and specifications around the bearings, marketability, economic efficiency, etc.

Q: How long do bearings last?

A: Approximately 85,000 to 100,000 miles
Wheel bearings have an average lifespan of 136,000 to 160,000 km (approximately 85,000 to 100,000 miles). This is only a rule of thumb though, the actual lifespan of a wheel bearing depends on the quality of the wheel bearing and the operating conditions.

Q: What are the grades of bearings?

A: Bearing balls are manufactured to a specific grade, which defines its geometric tolerances. The grades range from 2000 to 3, where the smaller the number the higher the precision. Grades are written "GXXXX", i.e. grade 100 would be "G100". Lower grades also have fewer defects, such as flats, pits, soft spots, and cuts.

Q: What is a common mistake when greasing a bearing?

A: Adding too much or too little grease is one of the most common mistakes made in our industry. As we've discussed already, too much grease builds up and eventually causes increased friction and pressure, and that causes excess heat. Too little of grease has the same life-shortening effect on bearings too.

Q: What is the rule of thumb for greasing bearings?

A: Recommended Grease Volume: For deep groove ball bearings, the ideal grease fill is between 25-35% of the bearing's internal space. Reasons for This Specific Range: This range provides enough grease to lower friction and wear. It avoids too much grease, which can cause resistance and heat.

Q: What does L10 mean in bearings?

A: The usual life rating for industrial applications is called “L-10” life. Simply put the L-10 life is the number of hours in service that 90% of bearings will survive. Or, conversely, 10% of bearings will have failed in the L-10 number of service hours.

Q: What is the most common bearing failure?

A: The majority of bearing failures occur because of improper lubrication. Lubrication failure can occur if the wrong lubricant is used, if not enough lubricant is applied, or if the bearing has been exposed to excessive temperatures that have caused the lubricant to degrade. Corrosion & Contamination.

Q: Does unused bearing grease go bad?

A: With proper storage, grease shelf life is often considered around 5 years by most industry experts. Can grease go bad over time? The answer is yes, grease can degrade over time, and its shelf life depends on various factors, including its composition, storage conditions, and the environment in which it's kept.

Q: How long does grease last in bearings?

A: Using the chart and the formula, the bearing only needs 8 grams of grease every 10,000 hours. If your grease gun delivers around 1.35 grams per stroke, that means the bearing needs 6 strokes every 13 months; you could average it out to a stroke every 8 weeks or so.

As one of the leading bearing suppliers in China, we warmly welcome you to buy high-grade bearing in stock here from our factory. All our products are with high quality and competitive price. Contact us for quotation.

04 709847 01 Bearing Seal Assy 2nd Source New, Gas Box, Novellus Varian 3290

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