Guide to Suffixes for Spherical Roller Bearings: Understanding the Nuances
Spherical roller bearings are known for their versatility and robustness. But did you know that there are a variety of suffixes that identify specific properties and designs? This guide will help you understand the most important suffixes for spherical roller bearings and make the right choice for your application.
Brand | FAG | Nachi | NKE | NSK | NTN | SKF | SNR | ZEN |
Plastic cage | TVPB | - | - | H | - | - | - | - |
Steel cage | - | - | CE | C,CD,EA,J | J | C(J),CC | A | - |
Brass cage | MA,M,MB | - | MB | CAM,M,MB | L1 | CA,CAC | M,MB | - |
Lubrication groove & bores | S,- | W33 | W33 | E4,W33 | D1 | W33 | B33 | - |
Reinforced interior construction | E1,E | EXQ | E | E,- | E | E | E | - |
Vibrating screen bearing design | T41A,T41D | V | SQ34 | U15SV,VB | UAVS1 | VA405,VA406 | F800 | - |
The reinforced internal construction of spherical roller bearings is designed to support higher loads and ensure a longer service life. These bearings have two rows of rollers arranged in a common hollow spherical outer ring and an inner ring that has two raceways. This design allows the bearing to self-align and handle both radial and axial loads efficiently. The reinforced design makes it ideal for heavy industrial applications such as mining, construction and paper manufacturing.
Lubrication groove & bores
Effective lubrication is crucial for the longevity and efficiency of spherical roller bearings. Lubrication grooves and holes are special features integrated into the bearings to ensure optimum lubrication. The lubrication grooves are usually located along the inner ring or cage and allow for even distribution of lubricant to the rollers and raceways. Lubrication holes are additional openings that allow direct lubrication of the bearing components, which is particularly important in applications with high speeds or high temperatures.
Cage Materials
Brass cage
Brass cages are popular due to their high strength and corrosion resistance. They are ideal for applications involving high temperatures or corrosive environments. Brass cages also help to minimize friction within the bearing, resulting in improved performance.
Steel cage
Steel cages are known for their high strength and durability, making them an excellent choice for heavy industrial applications. They are less susceptible to deformation under load and provide excellent structural support for the rollers.
Plastic cage
Plastic cages offer the advantage of lower weight and good wear resistance. They are low-noise and are particularly suitable for applications where low noise levels are required, such as in food processing or in electric motors.
Vibrating screen bearing design
Vibrating screen bearings, also known as spherical roller bearings for vibrating machines, are specially designed bearings developed for use in machines with high vibration and acceleration requirements. These bearings are particularly important in the construction and mining industries and in other applications where materials need to be classified or separated by particle size.
Features and construction
Vibrating screen bearings are designed to withstand the extreme conditions of vibrating machines. They typically have two rows of rollers arranged in a spherical raceway of the outer ring, which gives them a high load carrying capacity and the ability to self-align6. This self-alignment is crucial as it enables the bearing to compensate for misalignment and bending movements of the shaft that can be caused by the high vibration forces.
Specific design features
Some vibrating screen bearings are equipped with special design features to improve their performance and durability in demanding environments. These include:
- Increased radial clearance: These bearings can have increased radial clearance to better cope with thermal expansion and high vibration levels. This is particularly important in applications where excessive heat is generated1.
- Special cage materials: Many vibrating screen bearings use reinforced cages made from materials such as cast iron, which provide additional strength and durability7.
- Lubrication: Effective lubrication is critical to minimize friction and extend bearing life. Vibrating screen bearings can incorporate special lubrication holes and grooves to ensure even distribution of lubricant1.
Applications
Vibrating screen bearings are often used in machines such as vibrating screens, which are used in the materials processing industry to separate solids according to particle size. They can also be found in other vibrating units such as road rollers and saw frames, where high loads and speeds play a role18In summary, vibrating screen bearings are critical components for machines operating under extreme vibration conditions. Their special design and features such as increased radial clearance and robust cages make them ideal for applications that require high reliability and performance.
Conclusion
Spherical roller bearings are a versatile and robust solution for many industrial applications. Choosing the right cage material, as well as considering specific bearing features such as reinforced internal construction and lubrication grooves, can contribute significantly to the performance and life of your machinery. Whether you are a technician, student or simply interested in engineering, understanding these components is critical to selecting the right bearing for your needs.
Sources:
https://medias.schaeffler.de/de/design-of-bearing-arrangements FAG-Spezial-Pendelrollenlager für Schwingmaschinen
https://www.ntn-snr.com/sites/default/files/2021-07/DOC_I_SRB_CAT2_Da_web.pdf