The process of fitting angular contact ball bearings is susceptible and directly affects the performance and durability of machines. Additionally, these types of bearings provide support against axial and radial loads, making them indispensable in instances where high precision and reliability are required. In this article the installation of angular contact ball bearings is explained with proper tips, typical problems involved, and additional variables more related to installation and alignment. It does not matter if you are a professional or an green technician, this material aims to give you the basic understanding of bearing installation as it should be performed.
What is an Angular Contact Ball Bearing?
Characteristics of Angular Contact Ball Bearings
A key feature of angular contact ball bearings is that they can sustain axial loads in addition to radial loads, thus differentiating them from standard plain bearings. Apart from design and application matters, one of the most important factors is the angle of contact, which usually varies from 15 to 40 degrees, increasing the load-bearing ability under combined loads.
Based on the sources that I have studied, this is the list of some notable vital factors, along with their reasons:
Load Rating: The main features defining the dynamic and static load ratings of angular contact ball bearings include kilonewton (kN) distribution. The dynamic load rating is used to shorten the bearing’s lifespan under specified load conditions, while the static load rating better illustrates how the bearing functions when it’s at rest.
Ball size and arrangement: A bearing’s performance depends on the size and number of the balls inside it. Bigger balls help the bearings withstand higher forces, while properly proportioned motions of the balls help in proper force distribution, leading to better-bearing performance and longevity.
Contact angle: The contract angle is one of the key parameters regarding bearing movements. Increased contact angles will assist loads acting axially but may restrict loading radially, so it is essential to determine the proper angle needed for the application.
Material and Finish: Most commonly made of high-quality steel or ceramic, the choice of material affects the wear resistance and durability of the component. Applying a smoother bearing surface finish reduces frictional surfaces, which improves service life and efficiency as well.
These technical aspects are essential in aiding the proper selection and fitting of angular contact ball bearings to reduce the effects of wear and enhance load efficiency within specific parameters.
Applications and Advantages of Angular Contact Bearings
Angular contact bearings are used in some high-load and precision applications primarily because of the unique characteristics that they bring to design. A considerable amount of information in my research on some of the best screen websites leads me to believe that these bearings are used in electric motors, spindles of machine tools, and gearboxes. The design of the bearings makes it possible to apply axial and radial loads, which warrant their use in numerous applications, often calling for precision and reliability.
Electric Motors: In electric motor applications, angular contact bearings allow for the effective performance of the rotary machine component by floating it and reducing the amount of friction that would otherwise limit the movement of the rotor during high speeds.
Machine Tool Spindles: The exactness of angular contact bearings plays a vital role here. Their structure allows good strength, which can be utilized in high-speed applications where accurate locational control is needed.
Gearboxes: These bearings efficiently distribute axial loads within a gearing arrangement, increasing the gearbox’s life and performance.
Some of the benefits of angular contact bearings are an increase in load-carrying capacity due to a skewed contact angle, an increase in permissible speed, and a decrease in vibration levels. Since each working environment is different, selecting the ball size, material, and contact angle procedure is essential to achieve the best performance of these bearings for the intended use.
Differences Between Radial Ball Bearings and Angular Contact Bearings
Radial ball bearings and angular contact type bearings pertain to different general functions that machinery and engineering utilize in terms of their qualities and the forms of loads that they handle.
Load Direction:
Radial Ball Bearings: These bearings are aimed at applying load at an angle perpendicular to the shaft (radial load). Yes, a few axial loads may be accepted, but that is not what the bearing is made for.
Angular Contact Bearings: Unlike radial bearings, angular contact bearings have a fiber orientation. They are used in applications that require the scope of application for both the radial and axial load acting simultaneously.
Contact Angle:
Radial Ball Bearings normally contain no axial load support features, as the balls are linear and do not have a contact angle; hence, they don’t support axial loads.
Angular Contact Bearings: Have low axial inclined powers due to the installation of feature angles of contact with the radial angles, usually between fifteen and forty degrees.
Construction and Arrangement:
Radial Ball Bearings: Most contain only one row of balls, which simplifies their construction. They are used in scenarios when the axial load is not stringent.
Angular Contact Bearings: Commonly have one or more than one row of balls at angles to increase the strength and rigidity of the bearing for high-speed and high-load applications.
Speed and Vibration:
Radial Ball Bearings: The bearings, however, are not very well suited to high-speed operations since heating and vibration are excessive in such situations.
Angular Contact Bearings: Specifically designed to withstand more incredible speeds and less vibrations, these bearings are perfect for precise applications like machine tool spindles and electric motors.
In summary, it is preferred to recommend rotor part radial ball bearing or angular contact bearing for every application depending on further operating conditions like prescribed load direction, speed, and contextual application. Understanding performance differences allows usability, ergonomics, and durability enhancement.
How do you select the right angular contact ball bearing?
Factors to Consider in Bearing Selection
Some key aspects should be focused on during selection, as they significantly affect the performance of angular contact ball bearings.
Load Conditions: I evaluate the radial and axial thrust that the bearing will experience in service. It is important to analyze the main load. Anangular contact bearings are perfect in applications where axial loads are high and even more so when such loads are presented at certain angles, usually from fifteen to forty degrees.
Speed Requirements: I consider the speed with which the machine will be used. Where high speed is anticipated, bearings that ensure low vibration and heat generation within the machine are needed. For instance, angular contact bearings are mainly used in high-speed applications like turbine rotors and even precision machine tool spindles.
Precision and Tolerance: This measures how accurate one has to be when using the application. I consider the tolerable limits of the clearance because some angular contact bearings are built to have a smaller clearance, which is appropriate for high-precision systems such as aerospace and robotics.
Environmental Factors: It is necessary to assess the conditions in which the work will be conducted. Temperature changes, wet and dirty conditions, etc., lead to the selection of special materials and seals for the bearings to ensure adequate functioning and durability.
Lubrication Method: I decide what form of lubrication grease or oil will be used by the intended bearing because it impacts its lifespan and efficiency. For angular contact bearings, special lubricants may be needed for high speeds or heavy loads.
Bearing construction largely depends on factors such as temperature, dirt, and humidity over a wide service period. With this understanding, I would be able to make selections that are specific to given engineering tasks and prolong the life and operation of the bearings efficiently.
Understanding Preload and Internal Clearance
Factors such as preload and internal clearance are critical components as far as angular contact bearings are concerned since they determine their performance. Preloading is defined as the constant load applied uniformly on the bearings without utilizing any force from outside, which removes the internal clearance and improves the bearings’ structural strength. I give great importance to the correct ballast to have the bearings work at increased arts and lower vibrations, which is critical in many high-operational speed situations.
The internal clearance is defined as the space between the raceway and the rolling elements of a bearing. A component should be designed and manufactured with a very slight internal clearance in cases where it will be used for high-precision applications, as this gives better control of the motion of the component and minimizes contact noise and fatigue. Regarding technical parameters, justifying how the choice of preload and clearance has been made is based on the overview of relevant literature dimensioned.
Preload Level: This classification is determined by the application and is classified as light, medium, or heavy. Most tend to use light preload where low load conditions exist, and heavy preload is used in large machinery that is expected to bear high radial loads.
Definition of Internal Clearance: To comply with specific requirements, I categorize internal clearance types into C0 (normal), C1 (tight), and C2 (extra tight). For instance, C1 is used in most high-speed and precision operations where clearance must be very small.
Operating Temperature: I take into account the operating temperature range—higher operating temperatures could require a different preload schedule to reduce parts’ thermal expansion.
Thus, based on these parameters, it is possible to choose the preload and clearance correctly, enabling the effective and durable operation of angular contact bearings in their applications.
The Importance of Bearing Arrangement
Grasping the assembly of bearings is essential for load transfer and system efficacy. In looking through these three sources, I have derived a few appropriate documentary factors that inform decisions on the arrangement of bearings:
Load Direction: The load arrangement or layout of bearings and their type should be appropriate to withstand the applied load(s) axially, radially, and combined optimally. As a case, Cantilever positioning of Radial bearings in the horizontal plane helps overcome vertical load.
Misalignment Tolerance: One factor I consider at the stage of bearing arrangement selection is misalignment tolerance. Using self-aligning bearings gives more excellent reliability in the operation of rotating machines, mainly due to some misalignments that may occur in the process.
Space Constraints: Nearby structure or design constraints also affect the bearing’s layout. A space-restricted configuration might lead to stacked bearings, while a total assembly with enough space might adopt a dispersed arrangement to aid heat treatment and servicing.
Vibration Damping: The arrangement of bearings should consider effective vibration damping, which enhances machine efficiency and durability. Adequate distance, along with the right orientation and position mounting, could help reduce the effects of vibrations.
By incorporating these technical parameters into my bearing arrangements, I am able to achieve the best functional characteristics, minimize wear, and increase the operating life of bearings in my constructs.
What are the Steps for Proper Mounting and Dismounting?
Preparation for Mounting Angular Contact Ball Bearings
As I’ve started preparing to mount the angular contact ball bearings, I pay attention to some particular steps so that everything will work properly and last longer. First, I always visually check the bearings and any parts that mate with them for imperfections or dirt because any little defect could cause problems.
Next, I check the orientation of the bearing seats to ensure both are in parallel motion or perpendicular to the shaft because otherwise, it may lead to wearing out or failure shortly. I pay proper attention to the following technical parameters:
Preload: I ascertain the amount of preload so that the angular contact bearings operate properly since these types of bearings are better off under some amount of load. This assists in reducing internal clearance and ensures that every load is well distributed to the rolling elements.
Lubrication: Proper lubrication is something that I make sure to do, thus basing the kind and amount of lubricant that will be used on the recommendations and the working conditions of the manufacturer. Adequate lubrication guarantees that wearing and friction will be minimized.
Clearance: I check the bearing clearance to ensure it complies with the design requirements. This is important for facilitating the effectiveness of operations under different types of thermal conditions.
Following such preparation steps and concentrating on these technical parameters, angular contact ball bearings could be easily mounted, increasing the reliability and performance of the machines applied.
Step-by-Step Guide to Mounting Bearings
Following some steps when mounting the angular contact ball bearings is essential to accomplish contact engagements efficiently and reliably. According to my research from the top sources on Google, here’s a brief step-by-step guide one can follow:
Gather Necessary Tools and Components: Before starting, I make sure that I have all the required tools, such as a torque wrench, bearing press, and mount, and that I have the proper bearings and seals for the application.
Clean the Work Area: A contamination-free work area is essential. I clean all parts, including the shaft and the housing, with gan Pretoria cloth to remove dust particles and dirt.
Check Dimensions and Specifications: I measure the bearings and housings to ensure they are within the design limits. This includes checking whether the correct bore and outside diameters are present.
Align the Bearings: Proper alignment remains the critical factor in any assembly or fixating procedure. Adequate Parallelism of the bearing seats and the shaft’s axis should be adhered to. Such alignments avoided the tendency of increases in wear and failure of the bearings at premature times.
Preload Setting: The preload is determined and set based on application needs. Set Preload in Practice The preloads differ from conventional practices, ranging from 0.5% to 2% of the bearing’s static load rating. This internal clearance is intended to reduce and enhance the load distribution, improving performance.
Install Bearings: I push the bearing over a shaft or often inside the casing. Round bearing flanges are slipped over the shaft and pressed with a bearing installer to avoid hitting and damaging the bearings.
Lubrication: In accordance with the manufacturer’s instructions, I introduce the calculated amount of grease suitable for the working conditions (temperature, load, speed). Typical examples include lithium soap greases or oils.
Clearance Verification: I verify the “gaps” between installed components after every fitting. For angular contact bearings, the axial clearances are usually 0.001 to 0.005 inches and well within acceptable limits in relation to the load variations.
Final Inspection: Lastly, I turn the assembled unit over and spin it in both clockwise and anti-clockwise directions, listening for strange noises that should not be there.
By diligently following these steps and focusing on critical technical parameters like preload, lubrication, and clearance, I have been able to ensure the highest performance and long service life of the angular contact ball bearings in my applications.
Procedure for Dismounting Bearings
Preparation: Prior to dismounting it, I make sure that the work area is clear of all people and unnecessary items and that I have all the necessary tools, including pullers, wrenches, and cleaning utensils. This goes a long way toward making the process more efficient and reducing the chances of damaging the components or endangering one’s safety.
Inspection: The last step is to inspect the bearing assembly to determine if there are any signs of physical deterioration that need to be rectified before carrying out the actual dismounting. This condition is important as it helps take the required corrective measures or prepare for a replacement.
Remove Lubrication: If applicable, I remove the lubricant from the bearings. This aids in visual inspection and prevents contamination during dismounting. I do my best to adhere to the manufacturer’s specifications, as in most cases, the use of inappropriate solvents is avoided.
Dismounting Method: I dismount the bearings using the most suitable technique for ordinary or special types of bearings. I use a bearing puller to provide adequate and consistent force to remove interference-fitted bearings. Prestige is very critical, especially in the use of heavy tools, so that shocks are not transmitted to the shaft or housing. In the case of non-interference bearings, I turn them over the shaft.
Cleaning: After bearing removal, I cleaned the shaft-housing assembly to eliminate dirt, rust, or any previously applied lubricant. I also washed any unnecessary accessories deeply. This step needs no explanation, for it must be performed correctly to obtain the desired effect and functional properties when fitting a new bearing.
Assess Technical Parameters: When dismounting, I record the bisarubula technical parameters of the bearings, such as hole, outer, and inner diameters, which will help me choose the appropriate replacement bearing. Even specifics such as removal force and friction values can be helpful for future assembly or maintenance work so that they can be noted here.
Final Check: Finally, the last thing that remains to determine the condition of the bearing and its individual elements is to inspect them, including bearing grooves and seating areas, to identify any signs of pitting damage. Where any such defect is identified, it is duly recorded, and appropriate corrective actions to be taken on the replacements are specified.
Adhere to: By utilizing this systematic method, I can oppress the need to remount some bearings and risk damaging them and also prepare well for remounting or changing of replacement parts.
How to Manage Misalignment and Ensure Proper Lubrication?
Identifying and Correcting Misalignment Issues
My efforts on misalignment issues center on checking the alignment of gears, assemblies, etc., when mounted or serviced. I use a dial, laser, or any other equipment with any measuring device to accurately measure where there may be a misalignment. Common indicators of misalignment can include vibration, wear, and even heat flow patterns abnormal for a machine’s normal operation.
To fix those, I reposition the bearing or shaft assembly to achieve the required operational tolerances of the assembly within its fitting surfaces. Some of the critical technical considerations regarding this step are:
Angular Misalignment: This is interpreted as the shafts’ axial tilt angle, which in normal circumstances should be less than 1o.
Parallel Misalignment: The distance between two planes rotating about the use crazy shafts should be no more than 0.005”.
Bore Alignment: The diameters of the ‘borehole’ of the “bore” type bearings must be by the proper specifications to avoid unnecessary force, usually within ±0.002, the tolerance range of 0.002 inches.
Observing these adjustments, coupled with monitoring the technical parameters, enables me to optimize the functioning and extend the service life of the machines. To this end, unreasonable friction must also be prevented so that bearing failures do not occur too quickly because deflection is sometimes unavoidable.
Best Practices for Lubricating Angular Contact Ball Bearings
In providing lubrication for angular contact ball bearings, I first select a suitable lubricant, the most applicable technique, and a regularity to allow the bearings to perform in their best capacity. From the insights I’ve acquired from the top industry websites, here are the best practices I follow:
Selection of the proper lubricant: I use the best bearing grease or oil designated for angular contact bearings. The viscosity meets the operating conditions covering the ISO VG 32 to ISO VG 68 categorization, depending on the temperatures and speeds needed.
Sufficient Amount of Lubrication: Maintaining the optimal amount of lubricant is also essential. I also bear in mind that when lubricating, grease fills the bearing cavity about 30-50 percent for thermal expansion and rolling of the bearing balls without undue ability to exert towards the inner race that will result in catastrophic failure.
Advise for Change: I set out a maintenance plan in which the lubrication and level of each trunnion bearing are inspected periodically. These periodic checks usually consist of visual observation performed every three to six months or based on the operational requirement.
Lubricating Temperature: I keep a record of bearing temperatures while in operation, ensuring they do not exceed preset limits (normally 70 deg C). If temperatures exceed or reach this figure, it may indicate a lack of sufficient lubrication or operational misalignment that must be corrected to avoid damaging the bearings.
Lubrication Re-application: I reapplied the organic lubricant whenever necessary, depending on operating hours (performance feedback). In high-speed applications, I may lubricate more frequently, say every one thousand operational hours, but in lower-speed set-ups, it may go to every five thousand hours.
Following these best practices will help me optimize the performance of the angular contact ball bearings while expanding their useful life with efficient operation within the assumed design limits.
Common Lubrication Mistakes to Avoid
In most of my observations, the common mistake regarding lubrication is adding a disgusting amount of lubricant. This may raise the temperatures and pressure inside the bearing, accelerating the wear and burn of the lubricant and resulting in the deposition of sludges. However, I always see that the grease occupies only 30-50 percent of the bearing cavity, so room for expansion and movement is given.
Used oil quality is neglected. I understand the necessity of high-quality lubricants that correspond to the manufacturer’s specifications and overall lubricant performance, including the ISO VG rating. Some situations require extreme caution in lubrication, such as operating with a lubricant that does not fall within the required ISO VG 32 range to ISO VG 68, which is suitable for certain external conditions. Following the manufacturer’s guidelines about the specific kinds of lubricants is essential.
Regular Malpractice: Regular cautionary measures shall be implemented to avoid some problems that may go unnoticed. When I need to assess the performance of lubricating sealants for bearings or components, I visually check the availability and state of the lubricants every 3 to 6 months and record the temperature of use of the bearings. It is paramount to note that temperature above 70 degrees Celsius is prevented if bearing components are to be inspected for invisibly adequate tempering or shielding against friction or improper synergy of lubrication elements.
These pitfalls avoid procedures that affect the lubrication and the life span of angular contact ball bearings ACB, including performing routine maintenance.
What Are the Key Moments in Bearing Installation?
Critical Points in the Installation Process
Ensuring that Cleanliness is Maintained: In preparation for the installation, I practice cleaning all surfaces except the seals to avoid contamination of the bearings with foreign materials. I mean applying degreasers and super damp, lint-free fabrics to accomplish this task. Other substances are also very influential in their respective ways; some act as foreign contaminants and may cause excessive abrasion, thus the need for cleanliness, which was the most critical first step.
Proper Alignment: It is my practice to check the alignment of the shaft and bearings at the time of the bearing installation. Allowing this kind of improper angle could present a problem of improper weight distribution; in the end, the components will wear out and probably fail. This is made possible by using internal alignment tools or procedures recommended by the manufacturers so that there will be no mistakes about whether it is the shaft with the grooves or the aligned housing.
Correct Torque Specifications: It is also important to remember the significance of correct torque specification when securing bearings. Trying to secure bearings per the specifications indicated by the manufacturers, such as Allen wrenches, torque pounds inch pounds, and others, is quite normal. For example, in the instance where the exact instructions state that the torque has to be 30Nm, I ensure that I employ a torque wrench and apply this exact torque only, that is not too low or too high since every nut does have its limits, improper application of force could either shake some parts or wreck others.
Temperature Control: I measure the bearing temperature and pay close attention to it when placing the bearing. Special attention must be given to installing bearings at room temperature, which is neither too hot nor too cold, as thermal expansion may affect the fitting of components. Part heating devices for the bearing rings are concerned with temperatures of 80 to 100 degrees, which help in easier mounting but are still within the bonding limits so that the bearing structure is not damaged.
Addressing such important aspects enables me to increase the probability of proper use and lifetime of the bearing according to technical parameters that correspond with the industry’s necessities.
Ensuring Optimal Performance Through Correct Installation
When executing the bearing fitting operation, it is necessary to verify the recommended documents to obtain the specific requirements and the best practices to achieve the highest efficiency. An examination of the first three links provided by Google for the search-bearing installation offers the following views on critical aspects:
Adequate cleaning: As pointed out on Website 1, it is essential that both the bearing and housing are appropriately cleaned before fitting them together. Contaminants may lead to early failure, which is why solvent cleaners are also used to remove dust, grease, and debris.
Use of Lubrication: Website 2 places necessary emphasis on applying lubrication. The right kind and application of lubricant are fundamental in the function of the bearing as they limit unwanted friction surfaces and wear out of the bearing elements. When fixing the components, it is preferable to stick to the manufacturers’ guidelines on the type and quantity of grease to be used.
Installation Tools: It is further presented on Website 3 that any installation of such combiners as bearings and gaskets should be done with installation tools to protect the components from any distortion and for the precision of the installation practice. Each tool should be appropriate for the types of bearings used for satisfactory results; for example, a hydraulic press should be employed for larger bearing sizes rather than a hammer.
If these guidelines are followed in principle and technical parameters such as cleaning methods, lubrication specifications, and the appropriate tools are observed, then the success rate of bearing operation and its durability can be enhanced significantly.
Monitoring and Maintenance Post-Installation
Proper upkeep through observation and monitoring is necessary to extend the operational life of bearings and ensure that they function optimally after installation. Based on the assessment of the contours of the literature, maintenance practice.
Timely Maintenance: It is also given on Website 1 that most checks and operations should be completed based on a specific schedule, as almost all systems have notable intervals between exceptional states. This entails looking out for overheating or abnormal vibration, overheating or unusual noise generation or unusual vibration, overheating and wear. It is necessary to establish fixed time cycles based on the conditions under which the equipment works, for instance, every month, two months, or every three months.
Analysis of Vibration Factors: Website 2 says that vibration analysis can very well identify whether there’s any misalignment again or imbalance from the machines—all these while the piece is in operation. The vibration monitoring tools help enhance the reliability of the equipment while protecting the bearings in case of impending failure. The parameters evaluated are vibration frequency and amplitude; advisable limits going beyond the manufacturer’s recommendations warrant attention.
Lubrication After Installation: The importance of relubrication after the fitting of machine elements, including bearings, has been synthesized in many publications, as detailed in Website 3. Periodic checks of the lubricant quantities and quality reveal that appropriate amounts of heat are absorbed into the coming surfaces to reduce friction. It is also essential to keep track of the team-20 and dielectric strength of the lubricant because of the recommended requirements of the bearing manufacturers, like NLGI grade for grease.
By applying these monitoring techniques of regular inspections, vibration analyses, and lubrication checks, maintenance personnel are in a position to foresee bearing health management since the activities will be in accordance with the set technical parameters, thus improving the reliability and life cycle of the bearings in use.
Frequently Asked Questions (FAQs)
Q: What is the determinant and its importance in Angular Contact Ball bearings?
A: The contact angle is critical in Angular Contact Ball Bearings, as it controls the capability of the bearing to carry the axial load. This is because as the bearing’s capability of withstanding axial forces increases, so does the contact angle. This angle is described by the contact line formed by the rolling elements and the raceways.
Q: What can be said about bearing performance when working with angular contact bearings?
A: Many factors affect machine performance, and the selection of angular contact bearings is one. Bearings must be selected and used according to the kind of load to be applied in terms of radial and axial loads. Correct selection is important because it enables proper load sharing, thereby improving the efficiency and lifespan of the machine.
Q: Why must a bearing set be used in Angular Contact Ball Bearings?
A: A bearing set is imperative in cases where elevated stiffness and load capacity are requisite. A bearing set with two bearings arranged in an X arrangement, for instance, will be able to bear combined loads and support axial loads in both directions.
Q: Can elaborate on the X arrangement in bearing sets be elaborated?
A: The X arrangement in bearing sets is a type of arrangement whereby two bearings are arranged so that the angles of contact in the bearings are directed toward the bearing axis. This type of arrangement enables support of axial and radial loads in both directions with proper load support and stability.”
Q: What are the advantages of single-row angular contact ball bearings?
A: Single-row angular contact ball bearings can also be of the conventional type due to their capability of carrying combined axial load in one direction and radial load. They are used in areas where moderate load, high precision, and rigidity are required, for instance, spindle bearings in machine tools.
Q: How does axial load affect the Angular Contact Ball Bearings?
A: The axial load changes the performance of Angular Contact Ball Bearings in terms of the axial load in the raceways and rolling elements of the bearing. Bearings with higher axial load design characteristics have higher axial contact incidence angles, which increase the bearing axial load capacity.
Q: How would you say that the lubricant assists in the upkeep of the Angular Contact Ball Bearings?
A: Lubricant is very important for maintaining Angular Contact Ball Bearings since it reduces friction between the rolling elements and the raceway, reduces wear, and minimizes heat. Applying correct lubrication increases bearing lifespan while preventing catastrophic failure.
Q: How are open bearings different from sealed Angular Contact Ball Bearings?
A: Open bearings are not protected, so they need external lubrication and maintenance, whereas sealed Angular Contact Ball Bearings come pre-lubricated and are protected from contamination. Sealed bearings are most preferred in places where there is debris or moisture, and they last longer.
Q: In bearing application, what is the importance given to the selection of bearing contact angle?
A: The radial angle of the bearing, i.e., the bearing contact angle, is an important parameter in the selection of bearings since it is related to the type of load to be borne. Larger contact angles support higher axial loading, while small contact angles better support higher radial loads. This selection helps effectively meet the load requirement of the application on the bearing.
