# How to obtain Axial Load Capacity from Tapered Roller Bearings Catalog

• AeroGeek
In summary, The Back to Back Tapered Roller Bearing arrangement is better in axial load capacity than the Face to Face configuration. However, the difference is not large.
AeroGeek
Hello there,

I'm trying to select a tapered roller bearing (TRB) for my actuator, I know the peak axial force that is going to come. I have some radial load as well.
I want to select the TRB based on the axial load, but all the bearing catalogs or most of them give Dynamic and static Load Ratings.

Do I have to consider the given(from the bearing manufacturers) dynamic load rating as equivalent load and use it?

All bearing manufacturers usually explain how to select bearing size and give all the needed info.

You got the basic info very well-presented here. But SKF shows a more in-depth presentation of the same info here.

AeroGeek and Lnewqban
jack action said:
All bearing manufacturers usually explain how to select bearing size and give all the needed info.

You got the basic info very well-presented here. But SKF shows a more in-depth presentation of the same info here.
Thank you, it's really well shown here. Yes, some bearing manufacturers have more in-depth, and its confusing sometimes which to consider.

jack action said:
All bearing manufacturers usually explain how to select bearing size and give all the needed info.

You got the basic info very well-presented here. But SKF shows a more in-depth presentation of the same info here.
Hi I have gone through many literature now. and yet i'm unable to figure out why the Back to Back Tapered roller Bearing arrangement is better in axial load capacity. How to justify with numbers when compared to face to face configuration

I calculated the loads on points A and B, Keeping the bearings the same in back-to-back (DB) and face-to-face (DF), L2 for back-to-back is 4-5 times that of face-to-face, i.e. 50 mm for DB and 10mm for DF. After the calculations for Equivalent load and bearing life, both have not changed much. there is a slight reduction in Equivalent load and Bearing for the DF. If the difference is so less, then can I not use DF instead of DB ?
But all the textbooks and literature says DB has more axial load capacity and rigidity. I agree with rigidity because of L2, but in my case, since the bearings are very close that I am unable to figure out which is a better configuration.
In my case, the Axial load is higher, and the radial load is minimal.? Any thoughts would be welcome

## What is the axial load capacity of a tapered roller bearing?

The axial load capacity of a tapered roller bearing is the maximum axial force that the bearing can support. This value is typically provided in the bearing catalog by the manufacturer and is determined based on the bearing's design, materials, and dimensions.

## Where can I find the axial load capacity information in the bearing catalog?

The axial load capacity information is usually found in the specifications section of the bearing catalog. It may be listed under headings such as "Axial Load Rating," "Thrust Capacity," or "Dynamic and Static Load Ratings."

## How do I interpret the axial load capacity values in the catalog?

Axial load capacity values in the catalog are generally provided in units of force, such as Newtons (N) or pounds-force (lbf). These values indicate the maximum axial load the bearing can handle without experiencing excessive deformation or failure. It is important to consider both the dynamic and static load ratings for different operating conditions.

## Are there any factors that can affect the axial load capacity of a tapered roller bearing?

Yes, several factors can affect the axial load capacity of a tapered roller bearing, including the bearing's operating speed, lubrication, alignment, temperature, and the presence of any external vibrations or shocks. It is essential to consider these factors and consult the manufacturer's guidelines for accurate load capacity calculations.

## Can I use the axial load capacity values directly for my application?

While the axial load capacity values provided in the catalog offer a useful starting point, it is crucial to perform a detailed analysis considering the specific conditions of your application. This may include factors such as load distribution, safety factors, and potential misalignments. Consulting with the bearing manufacturer or a qualified engineer is recommended for precise calculations.

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