Spherical roller bearing as the high performance and heavy duty shook and heavy loads , misalinments
Engieer/Mohamed Abdelrazek Ahmed
Introduction
Shape and characteristics of spherical roller bearing
It is also resisting to angular misalignment of shaft and main spindles The permissible deflection value of a spherical roller bearing is in the range of 2 to 3° degrees. therefore it is suitable for long shaft installations It accommodates also Shook and high load
https://blogger.googleusercontent.com/img/a/AVvXsEgK6Tn25_55sdh2F0pgO7T5M6osFxFX6vVQAlLz7pYGIFf2f1RpJtt7Q3Sx0C33XvclTPSRovNEe_dpBkq6B2n850RbAwahOW0aaFir-P9n1XgQq8e_W3uVKU1aVacrIKgWDFxOhT67vL7dsGvlf58nTy03jI1XTaSmG8Ped1cQ97yo64MI9yIULgYgcIk8this image created by Silberwolf and This image is permitted to be circulated and copied with permission from its Owner Silberwolf according to Creative Commons Attribution 2.5 CC some rights reserved
https://en.wikipedia.org/wiki/Spherical_roller_bearing#/media/File:Schema_Roller_bearing,_self-aligning_single.svg
Carnaubo - Own work Under license CC BY-SA 3.0
Created: 1 September 2011
R is a radial loadA is an axial load
------------------------------------
Design of spherical roller bearing
The design of Spherical roller bearings come in two types with regard to the inner diameter, one with a straight inner diameter and the other with a taper slope inner diameter.
©2023 Eng/Mohamed Abdelrazek Ahmed---------------------------
https://en.wikipedia.org/wiki/Spherical_roller_bearing#/media/File:Schema_Roller_bearing,_self-aligning_single.svg
Carnaubo - Own work Under license CC BY-SA 3.0
A is an axial load
------------------------------------
Design of spherical roller bearing
The design of Spherical roller bearings come in two types with regard to the inner diameter, one with a straight inner diameter and the other with a taper slope inner diameter.
notice
Why is taper bore inner diameter spherical roller bearing used
- The taper on the inner diameter allows for self-alignment. that during installation, the bearing can adjust and correct for certain degrees of misalignment between the shaft and the bearing. This feature is required in applications where fine alignment is important.
- Tapered bore bearings can be interchanged with cylindrical bore bearings. By using adapter sleeves or withdrawal sleeves, you can adapt the bearing to different shaft sizes or without needing to replace the entire bearing.
- Its also facilitate easier and more accurate mounting on a tapered shaft. The taper allows for a better fit between the inner ring of the bearing and the shaft.
- also Tapered bore are often equipped with lubrication holes and grooves, which allow for easier access to lubrication point
https://commons.wikimedia.org/wiki/File:Adapter
Author Silver Wolf
.created by Silberwolf
-------------------------------------------
The designation of spherical roller bearing
The designation of spherical roller bearing is classified as the five or six numeric digits as the following: -
- The bearing numbers started from left by 2
- The first two digits from the left represents the kind of bearing (the spherical roller bearing (21. 22, 23, 24)
- The three first numeric digits from the left represents dimensions series combinations means the outside diameter and width dimensions value
- The last two digits from the right represents bore diameter The internal diameter is divided by 5, unless the diameter is greater than or equal to 500 mm, then its value is written as it is without divide by 5 like spherical roller bearing has the number 241/500 , here we write the dimensions series divided by bore diameter 500 mm is written as it is
- If the bearing number is suffixed with the letter 'K,' it indicates that the inlet bore diameter tapers at a ratio of 1:12. In such cases, an Adapter sleeve (combination of Withdrawal sleeve, threading locknut, and lock washer) is required to facilitate the mounting of a straight rotational shaft with the bearing.
You will find everything that I explained previously summarized in the following table, which I prepared for you
some application and fields which
the Spherical roller bearings are used
- Printing presses and paper processing equipment.
- food processing and Beverage machinery use specialized. stainless steel spherical roller bearings
- Railway Applications: locomotives, passenger cars, and freight cars,
- Mining and Construction Equipment like crushers, screens, conveyors, and excavator.
- Oil and Gas Fields used in drilling equipment, pumps, compressors, where they are exposed to heavy loads and harsh environments.
- Wind Turbines: in the main shaft and gearbox of wind turbines
- Steel and Metal Processing: in rolling mills, casting machines
- Agricultural Machinery: such as tractors in axles, gearboxes.
- Mounting on the transmission shaft of chimney fans in power plants like steam boilers
conclusion
In conclusion, spherical roller bearings are highly versatile components widely used in industrial applications. Their ability to accommodate both radial and axial loads, handle misalignment, and withstand harsh operating conditions makes them essential for ensuring the reliable and efficient operation of machinery and equipment across various industries. Proper selection, installation, and maintenance of spherical roller bearings are crucial to maximize their life cycle and performance while minimizing downtime and maintenance costs.
Comments
Post a Comment