Full complement cylindrical roller bearings are a distinct enhancement in bearing design aimed at achieving complex usages spanning different industrial sectors. In contrast to standard bearings, these are fabricated without a cage, enabling them to accommodate more rollers and increasing load capacity significantly. They are, therefore, designed to withstand extreme radial loads, making them suitable for gearboxes, compressors, and construction machinery. This article discusses the main advantages of full complement cylindrical roller bearings, particularly their efficiency, strength, and adaptability for most demanding applications. Such an understanding will help readers discover how these bearings enhance operational performance and increase reliability in various industry applications.
What are the Roller Bearings?
Understanding the Design
Except in severe applications, full complement cylindrical roller bearings are uncommon since they are constructed without a cage. A more significant number of rolling elements compared to constructed cage bearings is therefore possible, which increases the radial load capacity of this type of bearing, hence its ‘heavy duty’ claim. Radially arranged cylindrical rollers interact with the raceways directly and are designed to bear load without excessive deformation at high loads. Their robust construction makes them durable and best fitted for applications that subject them to oscillating or slow speeds.
In technical terms, relevant parameters for these bearings are:
Load Rating: Due to larger rollers, dynamic and static load ratings increase. For example, size and series-dependent load capacity start from several kN depending on size and series to several hundred kN.
Speed Limits: Caged bearings can accommodate relatively higher speeds, but while able to accommodate relatively high loads, they will not perform efficiently because they will most likely suffer from significant heat generation.
Operating Temperature: The usual working temperature ranges from -20 degrees Celsius to 120 degrees Celsius, with some unique materials or lubricants being able to extend this limit range further.
Material Composition: This might not apply in some applications, but most are high-grade bearing steels such as 100Cr6 (SAE 52100), best suited for up-scaled applications with higher wear and dimensional stability.
Lubrication Requirements: This requires careful lubrication management, such as grease or oil systems, because the rolling elements are close and may have high frictional contact, leading to excessive heat and wear.
The insight of these numerous engineering features ensures the consistent and reliable functioning of full-complement cylindrical roller bearings across a broad spectrum of heavily loaded industries, such as steel mills, mining equipment, and marine applications. These parameters should be understood to maximize effectiveness and durability to select the correct bearing fit for the expected application.
Advantages Over Other Bearing Types
The Full complement cylindrical roller bearing has made great strides in gaining user acceptance. The advantages of this type of bearing are clear when applied to heavy-duty, space-constrained environments. Here are some noteworthy upsides:
Improved Load Capacity: Because there is no cage, these bearings can fit more rollers in the same space, greatly enhancing their static and dynamic load ratings versus caged bearings. Based on the series size and dimensions, the load capacities span a range of about 100 kN to over 1000 kN.
Space Saving: Since the design is optimized for space, it is both time- and cost-effective to use these bearings in conditions where the mounting space is small and the bearing must be small but still provide load capacity.
Operational Stability Under Extreme Loads: These bearings are standard in heavy-duty applications, such as rolling mills or inside mining equipment. Due to high stresses, such devices tend to destroy ordinary bearings quickly.
Longer Service Life in Low or Oscillating Rotation: The complete complement design decreases the incidence of roller skidding, ensuring the drive operates efficiently in low rotational speed or oscillatory motion. Such applications could be seen in marine devices as well as industrial presses.
Cost-Efficiency: Heavy loads tend to become incredibly complex, not only in their organization but also in their design. However, many of these bearings can be a cost-competitive solution by replacing cages using more robust materials.
It is possible that their advantages, supported by specific technical parameters, explain why the full complement cylindrical roller bearings are still the most preferred in different forms in various industries. Any such applicability in such scenarios should always be cross-checked against the machine requirements and operating conditions beforehand to enable harmonization and durability of performance.
Applications in Various Industries
Full complement, cylindrical roller bearings are among the most preferred types of bearings in use today across various industries due to their ability to take up weight, save space, and be reliable in performance. Based on the technical specifications analyzed from leading sources, here are vital applications:
Heavy Industry: These bearings can be found in applications like steel making and rolling mills. Tensions of over 1500 K to kilonewtons, depending on size, are within the bearings’ capabilities, and they also have a high radial load the bearing can directly handle. The construction is also designed so that when using them, the rollers have limited chances of skidding, which keeps the roller stable at slow speeds or when it experiences oscillatory motions.
Mining and Construction: Such designs are best suited for applications such as mining equipment that require delay and intense lows, such as conveyor pulleys and crushers. They also withstand such applications since they have a shock and vibration-sustaining operating capacity. Such characteristics enhance the equipped components’ performance because fewer parts are used, and the absence of a caster provides additional value-generating cost-effectiveness.
Marine and Industrial Presses: These bearings operate relaxed and prevent wobbling and cursor movement. They are used in slow rotation and oscillatory movements, working in winches, propeller shafts, and hydraulic presses. These bearings have specific design features that achieve an effective operating condition, which is, most importantly, hours in which no inconsistency in load causes hours for rotation to be completed.
Some distinct features, like radial load capacity, speed range, and material strength, ensure that these bearings always perform the harsh requirements of industrial work. Correct bearing positioning concerning the machine design and proper lubrication are required to ensure optimal performance and high lifetime in all these applications.
Why Choose Roller Bearings?
Enhanced Load Capacity
Regarding increasing load capacity on cylindrical roller bearings, the absence of a cage and better packing of internal space come into play regarding their capability of carrying high radial loads.
Radial Load Capacity—A full complement of cylindrical roller bearings can sustain considerable radial forces, usually in the range of 100 kN to 1.5 MN, depending on the dimensions and configuration of the roller bearing. The maximum number of elements in rolling contact with the raceway makes this possible, aiding in achieving load equilibrium.
Material Composition—Bearings made of high-grade steel hardening, such as 100Cr6 steel or similar kinds, are characterized by high wear and tear resistance. Carburizing or surface coating, such as nitriding, increases the load capacity of the parts considerably in severe operating conditions.
Speed Range and their range of work—These bearings are, however, designed for low-speed, high-load purposes. Their speed varies from 1000 to 5000 RPM depending on lubrication and heat dissipation conditions. Technical parameters such as the minimum thickness of the lubricating film and the rolling friction coefficient must be maintained correctly.
These qualities make full-complement cylindrical roller bearings better suited for industrial applications incorporating heavy engineering, mining, and marine environments. Respecting design requirements and maintenance procedures is necessary for reliable and effective long-term performance.
Durability and Longevity
These bearing components have been designed to withstand hefty loads mainly due to the materials from which they are made and their structure. As a result, they are composed of high-quality steels, such as 100Cr6, which offer excellent resistance to wear and allow them to survive harsh conditions. Surface treatments like carburizing and nitriding are often advised for further protection, especially for severe conditions with high loads and corrosive environments.
Fortunately, the lifespan can be achieved through strict compliance with the following technical parameters:
Load Capacities: Up to 1,500 kN, depending on the exact model and design used to fit specific needs.
Recommended Speed Range: It is usually between 1000 RPM and about 5000 RPM and is determined by adequate lubrication and heat-generated dissipation.
Lubrication Requirements: In-contact lubrication reduces parasitic friction and wear and tear of the components to a minimum level.
Friction Coefficient: Using the maximum possible values for load and speed ensures smooth running and extends the equipment’s life expectancy.
The rotary motion unions’ service life is directly affected by the periodic service of the design and operation personnel, such as supervising the lubricant level, adjusting the most suitable operating position, and detecting the start of failed parts. Neglecting any of these instructions could limit their operational capacity and shelf life.
Reduced Maintenance Costs
The exceptional performance characteristics and engineering design of full-implemented cylindrical roller bearings lead to reduced maintenance costs. Since thorough research has been conducted via authoritative sources, these bearings seem high quality and do not require constant maintenance when used appropriately. Their durability is attributed to the ability to support massive, non-changing loads and work under high-impact conditions without much erosion over time.
Cost-effective maintenance and trouble-free high performance can be realized through the observance of the following technical features:
Load Capacities: Up to 1,500 kN, which means they can be used for highly demanding and load-related applications. However, this calls for a particular design that caters to certain operational requirements.
Lubrication Intervals are vital technical parameters, especially for use in high-temperature or high-speed rotating applications, to ensure a minimum oil film thickness is always maintained.
Surface Treatments: Carburizing or nitriding treatments are recommended in industries where bearings are subjected to corrosive or abrasive environments. These treatments enhance bearing life without unplanned maintenance service.
Monitoring and Alignment: Incorporating monitoring tools for misalignment and wear is a good addition to improving bearing life cycles.
Observing these technical parameters and a preventive maintenance strategy improves bearers’ operating life while reducing operating costs.
Key Features of Roller Bearings
Construction and Material
The use of high-grade steel types like chrome steel (SAE 52100) or stainless steel, which has high hardness, fatigue strength, and wear resistance, has been established in the production of roller bearings. This is important as it allows the bearing to carry hefty operating loads without substantial deformation during operational time. For some applications, ceramic parts can also be used where extreme temperatures or corrosive environments are encountered and weight is a concern.
The key technical parameters related to construction and material are as follows:
Material Composition: Although high-grade steel is standard, ceramic or hybrid materials are preferable in high-speed or corrosive situations.
Heat Treatment: Carburizing or through-hardening treatments are also used to increase the impact toughness and surface hardness of bearing components, providing them with the ability to perform for a long time and under heavy cyclic loadings.
Precision Class: Compliance with international norms and regulations, such as ISO or ABEC, ensures roller bearings’ requisite dimensional and rotational accuracy.
Protective Coatings: Additional protective coatings, including black oxide or phosphate, are among the relevant corrosive-resistant coatings, typically depending on the industry, such as marine or chemical processing.
Sealing Mechanisms: To prevent dust and moisture from penetrating, integrated seals are applied as a significant design feature that ensures dependable performance under harsh conditions.
If these attributes are well defined, they expect reliability and good performance in roller bearings in various industries. So, the proper selection and respect for these parameters enhance the effectiveness of the work process and the unit’s life.
Performance Under High Stress
While evaluating the performance of roller bearings in high-stress situations, it is essential to consider several factors to deliver reliability and efficiency of operation. From the standpoint of the synthesis of the best existent resources, the following points specify the necessary technical parameters and their justification:
Materials of Construction: High-quality steel, along with ceramic or other hybrid materials, must be used in construction. Such materials have a higher tolerance to high loads and abrasions, essential in high-stress areas like the aerospace industry or heavy-duty machines. Adding ceramics helps enhance thermal stability and reduce weight, which benefits performance during cyclic stresses.
Post-Machining Heat Treatment: Greater resilience is provided by undergoing processes such as through-hardening and a surface-hardening technique known as carburizing, increasing surface hardness and core toughness. This further ensures fatigue and deformation resistance, which are especially important during periods of increased stress.
Method of Lubrication: Certain lubricants in specific quantities should be used to counter friction and regulate shear stress-induced heat. The use of synthetic oils or severely viscous grease under high loads considerably strengthens the bearing’s longevity and operational stability.
Load Transfer: Certain design geometry has been optimized to allow the load to be evenly distributed into all the bearing structures when the bearing is subjected to external forces. The accurate dimensions obtained from machining and compliance with ISO or ABEC standards ensure that the bearing elements are rigid enough and that stress concentration is low.
Protective Measures: Other coverings capable of providing the required resilience, such as black oxide used in coatings, help protect the bearings against corrosion caused by chemicals. This is even more important in high-stress applications like chemical plants or offshore operations.
These parameters allow roller bearings to sustain excessive loads and high-frequency rotation moments without failure. The observance of these norms, however, not only increases bearings life but also guarantees operating reliability under challenging conditions. This is consistent with the requirements in the technical literature of global leaders in engineering mechanics.
Temperature and Environmental Resistance
Roller bearings’ function in excessive temperatures and unfriendly environments is governed by bearing material, lubricant properties, and protection. Some bearings are made of more thermally durable and chemically resistant materials, such as stainless steel and ceramics. For instance, using stainless steel in corrosive environments is standard practice, and ceramic rolling bearings are commonly suited for temperatures above 750 degrees Fahrenheit.
Also, from a lubrication point of view, synthetic lubricants or high-temperature extrapolates are designed to withstand thermal stress, enabling them to maintain their functional roles in heat-horrible zones. Flashpoint and thermal operating temperature range are parameters mainly exemplified in the performance selection of these lubricants, and further enhancement can go up to 500 degrees Fahrenheit operational temperature.
Proper protective measures also enhance environmental endurance. PTFE (polytetrafluoroethylene) or black oxide coatings can significantly reduce bearing corrosion and surface wear in harsh conditions where moisture, chemicals, and particulate matter exist. These coatings are particularly useful in fields such as aerospace and offshore drilling, where extreme conditions are the norm.
According to top engineering authorities, roller bearings will be most efficiently used in countries and industries with high thermal and corrosion resistance as long as the above measures are taken.
How to Install Roller Bearings?
Preparation and Tools Required
To successfully install the roller bearings, adequate preparation and tools must be provided. As for what technical references come from the most reputable sources, I find it necessary to suggest the following:
Clean and Inspect Components.
After cleaning the space in which it will be placed, the bearing and the sleeve or shaft must be cleaned thoroughly to prevent contaminants from sticking to them. Inspect for wear and tear or any physical objection that may affect performance.
Technical Parameter Justification: External factors like surface irregularities may alter the concentric characteristic of shaft and bearings and their alignment, which in turn will lead to unbalanced load distribution during operations
Gather Required Tools.
Specialized equipment, such as bearing pullers, hydraulic presses, and torque wrenches, should be enlisted to ease the mounting procedure and reduce the chances of damage.
Technical Parameter Justification: A hydraulic mount using jigs and fixtures will Center and homogeneously distribute the mounting force across the bore and eliminate squashing of the bearing surfaces.
Lubrication Strategy.
Make sure that high-temperature grease or synthetic oils intended to be used are appropriate considering the heat and environment that is expected during operation. To minimize the friction at the starting stage, A thin, even layer is recommended to be smeared.
Technical Parameter Justification: Proper lubricant application decreases the friction coefficient, increasing the moving elements’ efficiency. The lubricants used must be able to withstand temperatures above495°F.
Establish Proper Fit
Bearings can be press-fitted or clearance-fitted, depending on application specifications. Engineering standards, such as ISO 286, should be referenced to establish optimal tolerances for shafts and housings.
Technical Parameter Justification: These tolerances ensure the optimal load is distributed to the assembly, preventing overloading due to eccentricity or strain.
Following these preparatory actions with the right tools and parameters makes it possible to install precise and consistent roller bearings, thus reducing the chances of system failures and damage to the reliability and life of the system.
Step-by-Step Installation Guide
Examine the Components
Before installation, check all components, including bearings, shafts, and housings, for damage, contamination, and wear. Verifying that all surfaces are clean and devoid of particles is also important.
Technical Parameters Justification: Contaminants can pose an abrasive risk, which may negatively impact the bearings. The maximum acceptable surface roughness of the cooperating parts is usually about Ra 0.2 μm, so stress concentration is avoided.
Preparing the Mounting Surface
Mounting surfaces must be scrubbed with industrial detergent. If polishing is essential, it must be done on shafts or housing bores to meet the required surface tolerance specifications.
Technical Parameters Justification: Ensure that the shaft diameter and housing bore dimensions meet ISO 286-2 (i.e., make H7 or H6 fits depending on the application) so that no disturbances occur in the alignment during the installation.
Heat or Cool the Components as Necessary
Bearings can be heated to about 120°C (250°F) in the case of interference fits, or shafts can be immersed in liquid nitrogen to cool them to make assembly easier. However, the temperature should not exceed the manufacturers’ specifications to prevent modification of material properties.
Technical Parameters Justification: Parts assembled with a thermal differential allow components to be assembled by thermal contraction in a controlled manner, reducing installation forces. The temperature range should be well below the material’s tempering threshold (for example, 150°C for most elements with steel bearings and below norms).
Use Controlled Pressing Forces
Components can be assembled with a manual or hydraulic press to achieve reliable and repeatable assembly. Ensure that force is always applied to the correct ring. The inner rings are always for shaft fits, while the outer rings are for housing fits. This prevents stress from being put on rolling elements.
Technical Parameters Justification: Concentrated forces are used so localized radial installation loads and forces do not distort components. Pressing loads should be specified for particular components required to be installed. Limiting the number of installed components to the recommended bearing size is also advisable to avoid overloading them in various installation methods.
By observing all the procedures in detail and respecting the positioned technical parameters, the roller bearing installation can be completed accurately and with the desired assurance. This mode of operation reduces the risk of operational failure and enables the bearings to serve the expected life and function without a hitch.
Common Mistakes to Avoid
Improper Handling of Bearings.
When handling bearings, please do not touch them with bare hands or unclean tools. Certain contaminants, such as dirt, oil, and moisture, can infiltrate and damage the internal components. Use clean cloths or gloves and authorized instruments only.
Justification of Technical Parameters: Even microscopic particles can inflict packing seams and erosion wear. Of course, there are limitations to be conscientious about; it is reasonable to be guided by some cleanliness norms, such as ISO 4406, when working with moisture or any other component crucial in precision applications.
Neglecting Correct Fitment Practices.
Bearings installed with significant fitting forces or onto incorrect surfaces may develop some distortion and crack, leading to failure during operations. Observe tolerances and utilize respective fitting tools.
Justification of Technical Parameters: Fitting tolerances must be appropriate for a particular machine’s prepared packing class and load conditions (e.g., ISO tolerances H7 for housing fits and G6 for shafts). When packing seams or pressure classes are scanty fasteners, they will become fixed and allow uneven loading and deformation.
Avoiding Certain Lubrication Standards
Lubrication is an important step in bearing maintenance, and failure to perform it will adversely affect bearings’ operational efficiency. Without knowing the proper type or amount, lubrication can also lead to operations where components experience excess heat or high friction forces.
Technical Parameters Justification: The application of lubricants must comply with the reasonable requirements of lubricants, NLGI, and ISO VG grades, depending on the operating speed and temperature. Excessive lubrication should be discouraged since it causes churning and heat buildup.
Everyone managing centralizing roller bearings should realize that the mistakes mentioned above cause such operational and installation troubles, and proper instruction compliance would enable satisfying and trouble-free operation of roller bearings and roller bearing systems.
Maintenance Tips for Roller Bearings
Routine Inspection and Lubrication
In performing roller bearing routine maintenance, I ensure that examinations are made orderly and by industry practice and reputable technical literature. Early warning signs such as superficial damage and contamination can be discovered through regular propeller checks for appearance, sounds, and unreasonable activities. I focus on the issue of dirtiness; the bearing assembly will not be fed with foreign particles due to an uncontrolled environment or tools in use.
Technical Parameters Justification:
Lubrication Frequency: Standards such as ISO 281 and manufacturer guidelines must be adhered to while relining must be changed based on speed and load. For high-speed applications, more frequent relining is needed.
Correct Lubricant Type: Use the specified ISO VG rating oils or NLGI-grade greases appropriate for the temperature and load capacities. For instance, light oils (ISO VG 32-100) work well in high-speed applications, while appreciable oils (ISO VG 150-320) work more in high-load applications.
Lubricant Quantity: Apply the bare minimum necessary to ensure that the lubricant is devoid of clumping. Excess lube lowers an appliance’s running efficiency, and acoustic martins much heat energy. To avoid excessive churning, the recommended grease fill-in volume is about thirty to fifty percent of the housing’s free space.
As long as the roller bearings are frequently inspected and follow these good practices regarding technical parameters, their reliability and performance will be impressive.
Signs of Wear and Tear
By observing the conditions and modes of operation of the roller bearings, I can recognize the wear processes. Areas of plateaus in the raceway that have spalling, abnormal vibratory motion, noise, and high temperature of components in operational phases have the potential to be wear processes. This could result from dirt or other intrusive elements getting onto the system, inadequate oiling, or the elements being at crooked angles.
Wear Parameters to be addressed:
Surface Checks for Cleanliness: Dust, dirt, and even metal chips enhance the processes’ wear and tear. The bearings and the working environment need to be cleaned according to the standard ISO 4406 on cleanliness.
Assess how it is lubricated: If the surface moves into contact with another surface and has metal properties, then breakage occurs. It is essential to revise the oil entirely in terms of type and viscosity and the relubrication times depending on the speed and load. For instance:
- Do not mix ISO VG oils (32-320 range) or greases of different NLGI grades more than the operational conditions require.
- We are determining the temperature of moving parts to prevent over-lubrication and excessive grease charges in the housing.
Alignment Inspection: Misalignments apply discriminatory forces to the bearings, which can lead to concentrated areas of stress on the elements. To mitigate the chances of mechanical distortion, alignment must be corrected via shaft run-out measurements or through the aid of jigs advised by manufacturers.
Thus, to avoid thoroughly replacing the roller bearings, I can achieve an operationally reliable and efficient condition by keeping a close eye on these wear indicators and following the prescribed technical parameters.
When to Replace Your Bearings
To ensure operational effectiveness, I am responsible for determining the bearing replacement period based on some performance indicators, technical norms, and criteria set. The following factors are authoritative:
Excessive Noise or Vibrations： Bearings with a broad range of operational angles typically exhibit abnormal noise or elevated vibration levels if they have a resource constraint or something is damaged. Such symptoms demand an inspection without delay. If the unit does not have the means to be replaced and has an area surface spalling from fatigue or contamination, it has no choice. This is by the protocols for testing noise and vibration utilizing accelerometer devices and configured condition monitoring systems.
Elevated Operating Temperatures： High temperatures that persistently exceed the bearing’s design limits (commonly 65 degrees C and 110 degrees C for standard civilized materials) suggest that there has been insufficient lubrication alternative, misalignment, or some form of internal damage. When re-lubricating the bearing or adjusting the alignment does not solve the problem, replacement should be considered since continuous exposure to heat can weaken the materials.
Inspection of Fatigue and Surface Wear： I have to say that the examination of rolling elements, inner and outer raceways by visual methods, and specifically for patina or spall fatigue surfaces, should be done. Bear in mind that surface damage above the required level leads to a failure of the surfaces to sustain the loads entirely, causing a detrimental effect on the performance. I make sure that the bearing requires in-depth inspections with micrometers or endoscope, and any bearing that does not pass ISO 281 for minimum fatigue life is immediately discarded.
Technical Guidelines on Bearing Replacement:
Lubrication requirements: It is essential to consider replacing the permanently greased bearings with an NLGI grade of the appropriate strength or lubricating oil containing an ISO VG of viscosity desirable for expected revolutions and loads. Cleanliness parameters by ISO 4406 must not also be ignored.
Precision of alignment: The shaft and housing are aligned using dial indicators or laser alignment systems, and adjustable frames secure such measurements within the manufacturers’’ specified tolerances.
Loading capacity requirements: To avoid premature failure, ensure that all newly acquired bearings possess load-carrying capabilities and designs that are not below the original capabilities.
Thanks to complying exactly with these parameters and using materials from trusted industry sources, I am independent on the bearing performance controversy and timely replacement.
Frequently Asked Questions (FAQs)
Q: What advantages can be gained from using full complement cylindrical roller bearings?
A: Full-complement cylindrical roller bearings have high load and strength and occupy less radial space; therefore, they are suitable for constrained structures. They are also applicable in cases where heavy load and low-speed operational conditions occur.
Q: What advantages do the full complement cylindrical roller bearings offer regarding their performance?
A: There is no cage, which leads to more integrated rollers, which increases the bearing’s load capacity. This increases bearing life among other parts in applications where high load-carrying capability is highly overrated.
Q: Where are full complement cylindrical roller bearings generally utilized?
A: These bearings are generally used in heavy industrial activities like steel, mining, and construction, where loads and performance are critical. They are also used in gearboxes, pumps, and compressors.
Q: From an operational perspective, what is necessary for full complement cylindrical roller bearings to function effectively?
A: Regular inspection and lubrication are critical parameters if performance and durability are to be sustained. Having the proper lubricant and observing maintenance time schedules is vital to avoid early wear and tear.
Q: Are axial loads acceptable when using full complement cylindrical roller bearings?
A: Although the primary function of such cylindrical roller bearings is radial loads, some styles have axial load capacity. For sustained axial loading, the bearing type intended for such application must be used.
Q: What is the drawback of utilizing full complement cylindrical roller bearings?
A: Because no cage exists, these bearings cannot be used in high-speed interfaces as the friction increases. Compared to caged roller bearings, they also demand more maintenance and lubrication after a short time.
Q: What effect do alterations in operating temperature have on full complement cylindrical roller bearings?
A: Overheating can cause the lubricant to become ineffective, increasing wear and tear. To achieve sustained unit operation, regular temperature checks must be undertaken, along with additional cooling and lubrication support.
Q: What bearing materials are utilized in full complement cylindrical roller bearings?
A: In most cases, these bearings are constructed from special steel, which withstands prevailing wear and bears considerable strength. The rollers and raceways are also subjected to precise machining for load transfer and endurance efficiency.
Q: In what manner do full complement cylindrical roller bearings differ from caged bearings?
A: Full complement bearings pack more capable rollers, hence their higher load capacities, but they are not as suitable for high-speed applications as caged bearings. Depending on the application, one choice may be more appropriate.
