Tag: Roller bearings

Categories
Blog

Electric Motor Ball Bearings – Everything You Need To Know

Electric Motor Ball Bearings
As the name suggests, electric motor ball bearings are bearings that are used to support electric motors and make them function by transmitting the power between various elements of the machine or rotating the shaft. To help you understand more, This blog covers everything you need to know about electric motor bearings. The bearings are critical to support varied types of machinery and can work in any kind of environment within the mechanical systems. Electric motor bearings are designed to provide smooth, efficient operation of electric motors. The bearings are made of high-quality materials that can withstand the high speeds and loads exerted by electric motors making them apt for high-performance applications while ensuring an optimal operational life. These bearings are available in a variety of sizes and designs to meet the specific needs of different electric motors.

Electric Motor Ball Bearings: How they Power Electric Motors

Electric motors require reliable solutions to work in an optimum manner. In terms of mechanical characteristics, electric motors are powerful and versatile, making them useful to work in high-performing machinery. Be it machines at the factory or electric vehicles, these bearings can be used in any of the electrical motors to allow rotary motion and transmit the power to make various parts of the machinery function well. The bearings that support these motors need to allow for smooth, quiet operation while providing key features such as high load capacity, long life spans, and low running noise.  Electric motor ball bearings are subject to a variety of forces, including radial and thrust loads, as well as vibration and shock. To withstand these forces, bearings must be carefully designed and manufactured. The most common material used for electric motor ball bearings is steel, but other materials such as ceramic or plastic may be used in some applications.

Use Case in Real-Time Scenario

The main performance characteristics of electric motor bearings are high load capacity, high-speed operation, high precision positioning, low noise, etc. They are used in the load and speed requirements of the motor. In terms of general applications, they are widely used electronic appliances, large-scale machinery in factories, electric vehicles, railways, wind turbines, etc. Since these machines have different requirements, various types of bearings are used in different scenarios to power them:
  1. Ball Bearings: These are mostly used in non-belted and direct-coupled applications where the motor runs under 150 horsepower speed. Ball bearings are designed specifically to handle both axial and radial loads in varied conditions within the machinery systems. The most common application of these types of electric motor bearings is in AC motors.
  2. Standard Roller Bearings: These kinds of roller bearings are designed for belted applications and are perfect for radial loads. They are not used to handle axial loads. It also works with motors that operate at a minimum of 150 HP.
  3. Angular Contact Ball Bearings: These kinds of electric motor bearings are perfect for high-speed rotating applications with axial loads. It can be configured with different types of cage designs and rows.
  4. Cylindrical Roller Bearings: These roller bearings are perfect for handling extremely high axial loads. Cylindrical roller bearings work efficiently at both medium and high speeds and support several design alternatives as per the mechanical applications. These are mostly used for belt or gear-driven electric motors.
  5. Deep Groove Ball Bearings: These ball bearings are a perfect match for electrical motors as it is apt for high-speed applications supporting moderate-type axial and radial loads.
  6. Sealed Bearings: These are specially designed bearings that work in contaminant-prone environments. However, they have a limited life span as they cant be re-lubricated.
  7. Shielded Bearings: Shielded bearings are specially designed to protect electric motors from dust, dirt, and other debris. They are made with a metal shield that covers the bearing, preventing contaminants from entering and damaging the sensitive components.

Conclusion

This blog has covered various aspects related to electric motor bearing as these bearings are the perfect fit for all kinds of performance needs. Be it any kind of motor, there is always a type of bearing that exists to meet mechanical needs. While choosing a bearing, you should also consider checking out the design and specifications needed to make it work in the best way without compromising any performance issues or incurring functional damage. This is something that makes the machinery or motor work in a reliable manner.
Categories
Blog

A Guide To Cylindrical Roller Bearing

Cylindrical Roller Bearing
Due to their characteristics and benefits, cylindrical Roller Bearings are the desired solution for heavy machinery and equipment. This blog covers cylindrical roller bearings to help you understand their uses and advantages.  The bearings act as a bridge between machinery and various mechanical components, thus helping them to reduce friction. It facilitates the movement of components through the cylinder as a roller element that can bear heavy loads and can be used in a variety of heavy-duty machinery. Specifically designed to cater to extreme mechanical conditions, these bearings can support heavy radial loads. These types of bearings have linear contact areas with outer rings, making them distribute loads on a broader surface area. 

Uses of Cylindrical Roller Bearings

The cylindrical roller bearings can be used in various types of mechanical systems. The different types of cylindrical roller bearings can offer different usages:
  • Axial Displacement: The bearings are designed to support axial loads and facilitate movement to and from axial directions within the machinery. The N and NU types of cylindrical roller bearings are perfect use cases for axial displacement, as single-row cylindrical roller bearings offer the scope of axial displacement in some limits relative to the housing.
  • Withstand Incidental Thrust Loads: The thrust load is a load that is applied parallel to the rotation of the axis. The NF, NJ, and NUP series of cylindrical roller bearings are designed in such a way as to withstand incidental thrust loads apart from radial loads.
  • Uses in Heavy Machinery and extreme systems: The cylindrical roller bearings are used in high-speed systems and can be deployed for high-performing systems such as agricultural machinery, wind turbines, mining machines, etc.

Advantages of Cylindrical Roller Bearings

The performance and design are why cylindrical roller bearings are suitable for specific applications. It offers varied advantages, which are as follows:
  1. It has a higher resistance to fatigue and shock than a ball bearing.
  2. It Offers simple mounting and dismounting due to its unique design.
  3. It is designed to take the combined radial load (N and NU type) and thrust load (NJ and NUP type).
Conclusion There are different types of Roller Bearings available in the market. Still, specifically, as per the use cases, the cylindrical roller bearings are designed to cater to machinery’s unique high-performing needs. Moreover, due to its characteristics and operability, it suits well for extreme mechanical conditions.  
Categories
Blog

Applications Of Roller Bearing In Heavy Machinery

Roller Bearing
The roller bearing is used in the mobilization of machinery to reduce friction between moving parts. The different types of roller bearings are used in heavy-duty machinery that supports radial, axial and thrust loads. This blog discusses various applications where roller bearings are used in heavy machinery.  The bearings are made to support complex mechanical systems and their vitality can be observed in their application in a multitude of machinery. Be it automobiles, aeronautics, railways, earthmoving or agriculture, the roller bearings can be used perfectly to match the needs of different heavy-duty applications.  While referring particularly to a roller bearing, they are designed in such a way to support performance in those applications where there are large axial and radial loads. The Roller Bearings consist of the outer ring, inner ring, and a window cage which works as a holder for the rollers.

Design of Roller Bearing – Supporting Heavy Machinery

Roller Bearing helps in support the large radial and axial loads in heavy-duty machinery. This works in one direction to guide the axial loads while complimenting bearings are also used simultaneously to support the load in other directions. These types of bearings can be widely used in those conditions where the temperature may vary between -30 degrees celsius to 120 degrees Celsius.

Applications of Roller Bearings in Heavy Machinery

There can be varied types of Heavy Machinery that might require heavy-duty applications. Here are some of the applications of roller bearings in heavy machinery:
  • Wind Turbine Generators for Energy Generation – Wind Turbine generators are usually installed in high-altitude areas which require a reliable bearing solution that can operate within the high-performance wind turbines in high-speed winds. In such conditions, the tapered roller bearing and spherical roller bearings can be installed in the main shaft of the wind turbine that receives the force and can pass on the rotation to the generator.
  • Use of Roller Bearing in Agriculture Machinery – The agriculture industry also demands heavy-duty machinery as it has to deal with heavy-duty applications on a day-to-day basis. While these applications range in a multitude of high-performance tasks, the bearings must be reliable and long-lasting as they have to be used in heavy dirt and mud conditions which might also impact the bearing life. The roller bearings are one such perfect solution that can be used in varied tasks which might require heavy radial or axial loads and they can get the work done with ease. The common type of bearing used in the agriculture industry is a tapered roller bearing.
  • Construction and Heavy Machinery – The construction industry requires varied earth-moving equipment for a high range of heavy-duty tasks. While there can be varied challenges while dealing with the applications of construction, the bearings are usually exposed to excessive working conditions as machines have to be deployed for high-performance tasks. In order to meet this demand, there is a need for different types of roller bearings such as spherical roller bearings, tapered roller bearings, cylindrical roller bearings, etc. which are designed to deliver the desired performance.
  • Use of Roller Bearings in Railways – The railways are considered one of the most reliable modes of transport worldwide. While there are different systems, trains, and tracks connected over wide networks, heavy-duty machines are used to facilitate day-to-day operations. The bearings in the railway industry are used in traction motors, drive units, wheel axles, etc. While the bearings have to work in extreme conditions of carrying heavy loads and adapting to high vibrations in drive units, varied roller bearings like tapered and spherical roller bearings are also widely used to support the mechanical system. Since the railway network is now moving towards high-speed trains, the roller bearings are also designed especially for double helical gears which can work for a longer duration without the need for lubrication.
  • Use of Spherical Roller Bearings in Marine Propulsion  – Marine propulsion can be referred to as a thrust system that is used to move a boat or a giant ship. While this is also considered in the category of heavy-duty application, the diesel engine of the ship is linked to the propeller which facilitates the movement through a complex system. Here, roller bearings can be used within the shaft or different mechanical systems as there can be conditions where the bearing has to adjust to radial or axial load while also complying with the scope of heavy misalignment. These kinds of bearings are designed to handle one-directional axial load and radial load at the same time while allowing shaft misalignment.
Conclusion While heavy-duty applications use bearings within the machinery, the complex working conditions can make bearings tough to work as desired. In such cases, the different types of roller bearings are used to facilitate high-performance working conditions ensuring the reliability and longevity of bearings in multiple ways.
Categories
Blog

How Roller Bearings Are Different From Ball Bearings

ball bearings and roller bearings

There are slight differences between Roller Bearings and Ball Bearings which makes it different to be used in varied applications. Want to know more? Read this blog to know about how roller bearings are different from ball bearings.

While Ball Bearings and Roller Bearings are different types of bearings available in the bearings market they serve the purpose of working in different applications. They may have a similar function to perform in terms of offering smooth rotation and reducing the friction to support machinery but they are also differently designed to adapt in different situations. In aspects of the design also they might look similar but in literal terms, they have some distinctions which make them different.

What is Roller Bearing and Ball Bearing?

In mechanical aspects, the bearings are designed to bear loads which makes them capable to support the functioning of machinery in varied ways. They are both particularly designed to carry loads while reducing the friction between the points of contact. In terms of design, the ball bearing is a spherical unit while the roller bearing is a cylindrical unit.

Why are Bearings Used?

Metal to metal contact is next to possible as it can degrade the metal and result in wear and tear. In such cases, the role of bearing comes to reduce the friction by rolling two different surfaces over one another which are handled by rollers or balls. The Bearings are widely used in a number of different applications such as automobiles, machinery, mechanical equipment, railways, aeronautics, etc.

How Roller Bearings are Different from Ball Bearings?

Use of Rolling Element

In both Roller Bearing and Ball Bearing, there is a rolling element, cage and bearing rigs that consist of a bearing. When the rolling element in the bearing is a spherical ball then it is simply termed as a ball bearing.

Roller Bearings are designed to withstand Heavy Loads

The Roller Bearings use rollers in the place of balls which makes them capable to be used in radial and axial loads where misalignments are possible. In varied cases, they are used in automobiles like trucks, buses and vehicles.

Distribution of Loads

In the case of ball bearing, they work to transfer loads from outer raceway to inner raceway while in roller bearing it distributes the load over the large area making it desirable to manage load in a better way as compared to ball bearing. This happens due to line contact which makes it capable of handling resistance and shocks.

Which bearing is better

Both ball bearings and roller bearings may have different capacities, the roller bearing may be good in terms of shock and high resistance conditions while ball bearings might be good for operability at higher speeds.

Conclusion

The different bearings are designed to be used in different applications and are capable of handling varied loads. While some are designed best to be used in mechanical applications others can be used in components where there is a need of adjusting loads and radial applications i.e. automobiles. It is important to consider different factors while choosing bearings for your purpose.

Categories
Blog

All You Need to Know About Spherical Roller Bearing

Spherical Roller Bearings

Spherical Roller Bearing is designed to handle heavy-duty operations with higher loadbearing capacity and efficiency. This blog talks about various aspects to help you understand better about Spherical Roller Bearing.

The term “spherical roller bearing” refers to a type of rolling element bearing with spherical rollers that operate on the principle of rolling contact without sliding or fretting. The bearing can be used for many applications where radial loading is required. It can be classified as either a single row or double row depending upon whether it has one or two rows of balls between its inner ring and outer ring. These bearings have been widely applied in various industries including automobile, aerospace, wind energy generation, construction equipment, mining, off-road vehicles, marine, automotive transmission and agriculture sectors.

Spherical Roller Bearing - Designed for Heavy Loads

The term “spherical roller bearing” refers to a type of rolling-element bearing with spherical rollers that operate on the principle of rolling contact without sliding or fretting. The bearing can be used for many applications where radial loading is required. It can be classified as either a single row or double row depending upon whether it has one or two rows of balls between its inner ring and outer ring. These bearings have been widely applied in various industries including automobile, aerospace, wind energy generation, construction equipment, mining, off-road vehicles, marine, automotive transmission and agriculture sectors.

Spherical Roller Bearing Is Built For Tolerances

The major purpose of bearings is to prevent friction between the loads and there can be conditions when the bearing has to tolerate the misalignment due to the design and specification of machine operation. It can be bent shaft rotation where the shaft may deflect due to the increase in potential load or operation. In such cases, the spherical roller bearing comes as a savior to solve numerous challenges of manufacturing tolerances. Due to its unique design and efficiency, the spherical roller bearing can work quite well where the ball bearings might not work as optimum.

What are the Different Types Of Spherical Roller Bearing?

There are two types of Spherical Roller Bearing which are as follows:

  • Spherical Roller – These types of bearings have the ability to adapt well to heavy radial loading. As in terms of design, they are barrel-shaped, they can bear possible angular errors and misalignments that can happen in the case of heavy-duty machinery due to higher load. Referring to the practical application, they can tolerate the conditions of misalignment between housing and shaft making it possible to attain parallelism without the scope of errors and breakdown.
  • Spherical Roller Thrust – The Spherical Roller Thrust bearings come with an asymmetrical barrel shape roller that makes it capable to adjust well with a higher load and speed. The main application of this bearing is to maintain the higher capacity of thrust along with continuous alignment. In terms of its manufacturing and design, these bearings also result in a lesser fraction.

What Are The Features and Advantages of Spherical Roller Bearing?

The Spherical Bearings do offer greater benefits to their counterparts such as Ball Bearings whose applications and operating efficiency are limited. Since it is unique in terms of build quality, resistance, and design, the spherical roller bearings are widely used in high-performance and heavy-duty applications.

Here are various features which are as follows:

  • Self-Aligning Feature – Spherical roller bearings have the capability to self-align themselves during operation. The inner race can be adjusted until it is perfectly centred on the outer race. No special tools are required for this process and the bearing itself is designed in such a way as to maintain its state
  • Low Bearing Diameter – Spherical rollers require less bearing diameter than other types of ball bearings. For example, when using an 8 mm bearing, you will only need 4 mm between your inner and outer races.
  • High Load Capacity – Spherical roller bearings are designed to handle higher load capacities than other bearings. They also offer superior performance under adverse operating conditions such as temperature variations or vibration.
  • Continuous Alignment – Spherical roller bearings maintain their alignment throughout the life cycle of the bearing. Unlike tapered roller bearings which must be realigned after each use, spherical roller bearings can continue to operate without any maintenance
  • Extremely Smooth Operation – Spherical roller bearings provide extremely smooth operations due to their unique design. They are designed to deliver utmost efficiency in any kind of machine or equipment to power smooth operation.
  • Easy Maintenance – Spherical roller bearings require little maintenance compared to other types of bearings. You just need to clean out the grease once every six months.
  • Ideal For Heavy Duty Applications – Spherical roller bearings are often used in applications where there is a requirement for heavy-duty operation. These include earthmoving equipment, mining machines, industrial machinery, construction vehicles, marine vessels, wind turbines, and so on.

Understanding Application Of Spherical Roller Bearing

The Spherical Roller Bearings can be used in conditions or machinery where the load you need to carry exceeds the load rating of other types of bearings, such as ball bearings. The outer ring has two rows of rolling elements separated by a radial gap. These rolling elements contact the inner race surface at both ends. Because there is no separate cage or retainer, the rolling elements can move freely within the radial gap. As the spherical roller rotates, they will always be aligned on their axis of rotation; therefore, they do not require any special alignment method.

List of Industries Using Roller Bearing

Roller bearings find widespread use across a variety of industry segments due to their ability to handle heavy loads, high speeds, and diverse operating conditions. Here’s a list of industry segments where roller bearings are commonly employed:

  1. Automotive Industry: Roller bearings are extensively used in automotive applications such as wheel hubs, transmissions, engines, steering systems, and suspension systems.
  2. Industrial Machinery: Roller bearings are crucial components in industrial machinery including machine tools, conveyors, pumps, compressors, gearboxes, printing presses, and textile machinery.
  3. Aerospace Industry: Roller bearings are utilized in aircraft engines, landing gear systems, flight control mechanisms, and various other aerospace applications due to their reliability and performance under extreme conditions.
  4. Construction Equipment: Roller bearings are found in construction equipment like cranes, excavators, loaders, bulldozers, and compactors, where they facilitate smooth operation and withstand heavy loads.
  5. Railway Industry: Roller bearings are used in railway applications such as locomotives, freight cars, passenger cars, and rail infrastructure components to support wheels, axles, and rotating mechanisms.
  6. Mining and Quarrying: Roller bearings are employed in mining equipment such as crushers, screens, conveyors, and drills, where they endure heavy loads, shock, and vibration.
  7. Power Generation: Roller bearings are used in power generation equipment such as turbines, generators, and wind turbines to support rotating shafts and ensure efficient energy conversion.
  8. Marine Industry: Roller bearings are utilized in marine applications such as ship propulsion systems, steering systems, winches, and deck machinery, where they withstand harsh environmental conditions.
  9. Renewable Energy: Roller bearings are critical components in renewable energy systems like wind turbines and solar trackers, supporting rotor shafts and ensuring smooth operation for optimal energy production.
  10. Steel and Metal Processing: Roller bearings are essential in steel mills, metal processing plants, and forging operations where they support heavy rotating machinery and equipment.

These are just a few examples of the diverse range of industry segments where roller bearings are widely used, highlighting their importance in modern manufacturing, transportation, and infrastructure.

Conclusion

The Spherical Roller Bearing is a great solution for industries that require heavy-duty tolerance and load in terms of bearings. It not only meets the demand for modern mechanized machinery but makes operations efficient and optimal to carry heavy loads.

Categories
Blog

All You Need To Know About Needle Roller Bearings

Needle Roller Bearing

There are different types of bearings available in the market depending on the usage of the product. Needle roller bearing is widely used in many industries such as mining, automobiles, railways, aerospace and many others. This blog will provide all the information about these bearings and will help you to choose the right one for your requirement.

Needle Roller Bearing is one of the economical bearings offering high load capacity due to their special design featuring rolling cylinders with small diameters held between a single race and shaft of a bearing. It also reduces the friction of rotating surfaces making it highly durable. In terms of design, these types of bearings are quite light and small making them fit in those applications which require lesser space. This is a popular type of cost-effective and efficient bearing used by design engineers due to the various technical benefits offered by it.

A needle roller bearing has a diameter to length ratio of between 0.1 and 0.4, measured on the outside of the rollers.

Structure of Needle Bearing - Types of Needle Roller Bearing

There are 4 main types of needle roller bearings, including caged wheel, drawn cup, precision race wheel and thrust wheel. Their typical structure includes an inner wheel or just a shaft to anchor the part, a cage to hold all of the rolling elements within their various compartments and an outer ring. Selecting the right type of needle roller bearing for your specific application depends on a variety of factors such as the necessary load capacity, load type (roller angle), and speed (rpm), as well as the expected temperature limits (typically higher than normal rolling element bearings like ball or sleeve).

Features of Needle Roller Bearing

The Needle Roller Bearings have varied advantages over other types of bearings which are quite larger in size and may not offer the benefits as needle roller bearings offer. The first benefit is that it has a higher load capacity than other bearings. Another advantage it offers is that it delivers the durability to handle the high rigidity of the shaft based on varied types of applications.

Applications Of Needle Roller Bearings

  • Needle roller bearings can be used in various types of machinery such as automotive power transmission systems, two and four-stroke engines, planetary gear sets, and air compressors.
  • Needle roller bearings are especially useful in machinery that requires high temperature, large load, durability, and quiet operation. As the name implies, the rollers are needle-shaped with a wide diameter at one end and a narrow diameter at the other.
  • Needle roller bearings are made of high strength steel with rows of rollers all sharing the same axis. The rollers are supported by the shafts to prevent them from moving in all directions except through the shafts’ axis. The rollers are attached to the shafts by means of cage assemblies.

Conclusion

NBC Bearings is one of the leading manufacturers offering industry-standard manufacturing of needle roller bearings. As they have a high industrial demand in varied sectors, it is made with utmost quality and precision to support the working of various mechanical systems.