Purchasing guide for roller bearings


Choisir un roulement à rouleaux

Are you looking for an efficient bearing to guarantee optimum performance in your mechanical application?

 

Welcome to our buying guide dedicated to bearings, essential parts for many mechanical applications. Choosing the right type of bearing is crucial to ensuring optimum performance and long life for your systems. In this guide, we'll explore ball, roller and needle bearings in detail, focusing on their technical characteristics, their differences and the key steps for selecting them

 
Choisir un roulement à rouleaux

Are you looking for an efficient bearing to guarantee optimum performance in your mechanical application?

 

Welcome to our buying guide dedicated to bearings, essential parts for many mechanical applications. Choosing the right type of bearing is crucial to ensuring optimum performance and long life for your systems. In this guide, we'll explore ball, roller and needle bearings in detail, focusing on their technical characteristics, their differences and the key steps for selecting them

I. Why choose a cylindrical roller bearing?

 

Design :

Cylindrical roller bearings come in a wide variety of designs. The most common is the single-row cylindrical roller bearing with a cage. This design is able to support high radial loads and very high speeds.

There are also cylindrical full complement cylindrical roller bearings, which have no cage and can accommodate a maximum number of rollers. As a result, they offer very high load capacity and rigidity. However, their composition considerably reduces rotation speed, and they are only suitable for unidirectional axial loads.

The high-precision cylindrical roller bearing is used to radially support the main spindles of machine tools. The entire bearing can be disassembled for easy assembly. What's more, the inner ring features a tapered bore that facilitates radial clearance adjustment.

 

Advantages :

Performance and design explain why cylindrical roller bearings are suitable for specific applications. They offer a variety of advantages, including the following:

  • It has greater fatigue and shock resistance than a ball bearing.
  • Its unique design makes it easy to assemble and disassemble.
  • It is designed to support combined radial load (N and NU type) and axial load (NJ and NUP type).

 

Applications :

Cylindrical roller bearings are mainly used in various equipment such as electric motors, axleboxes, pressure rollers and rolling mill rolls due to its ability to support high radial loads. They are also extremely effective in applications requiring gear and transmission changes.

I. Why choose a ball thrust bearing?

 

Schéma roulement à rouleaux cylindriques

Design :

Cylindrical roller bearings come in a wide variety of designs. The most common is the single-row cylindrical roller bearing with a cage. This design is able to support high radial loads and very high speeds.

There are also cylindrical full complement cylindrical roller bearings, which have no cage and can accommodate a maximum number of rollers. As a result, they offer very high load capacity and rigidity. However, their composition considerably reduces rotation speed, and they are only suitable for unidirectional axial loads.

The high-precision cylindrical roller bearing is used to radially support the main spindles of machine tools. The entire bearing can be disassembled for easy assembly. What's more, the inner ring features a tapered bore that facilitates radial clearance adjustment.

 

Advantages :

Performance and design explain why cylindrical roller bearings are suitable for specific applications. They offer a variety of advantages, including the following:

  • It has greater fatigue and shock resistance than a ball bearing.
  • Its unique design makes it easy to assemble and disassemble.
  • It is designed to support combined radial load (N and NU type) and axial load (NJ and NUP type).

 

Applications :

Cylindrical roller bearings are mainly used in various equipment such as electric motors, axleboxes, pressure rollers and rolling mill rolls due to its ability to support high radial loads. They are also extremely effective in applications requiring gear and transmission changes.

II. Why choose a spherical roller bearing?

 

Roulement à rouleaux sphériques

Design:

Spherical roller bearings typically consist of inner and outer rings with spherical running surfaces, rollers designed with a spherical shape, and a steel, brass, or polyamide cage offering support and stability to the rollers while minimizing internal friction.

 

Advantages :

Spherical bearings are designed to tolerate misalignment between shaft and housing. Thanks to their design with spherical bearing surfaces, they can absorb alignment variations, enabling better load distribution and reducing stress on bearing components.

The design

 

Fields of application :

Spherical roller bearings are used in many industries and applications, including:

  • Heavy industrial machinery such as construction and mining.
  • Steel industry, including rolling mills and blast furnaces.
  • Agricultural machinery such as combines and tractors.
  • Conveyor equipment such as belt conveyors.

In general, spherical roller bearings are used in many other applications where heavy loads and difficult alignment conditions are present.

Schéma roulement à rouleaux sphériques

II. Why choose a spherical roller bearing?

 

Roulement à rouleaux sphérique

Design:

Spherical roller bearings typically consist of inner and outer rings with spherical running surfaces, rollers designed with a spherical shape, and a steel, brass, or polyamide cage offering support and stability to the rollers while minimizing internal friction.

 

Advantages :

Spherical bearings are designed to tolerate misalignment between shaft and housing. Thanks to their design with spherical bearing surfaces, they can absorb alignment variations, enabling better load distribution and reducing stress on bearing components.

The design

 

Fields of application :

Spherical roller bearings are used in many industries and applications, including:

  • Heavy industrial machinery such as construction and mining.
  • Steel industry, including rolling mills and blast furnaces.
  • Agricultural machinery such as combines and tractors.
  • Conveyor equipment such as belt conveyors.

In general, spherical roller bearings are used in many other applications where heavy loads and difficult alignment conditions are present.

III. Why choose a tapered roller bearing?

 

Roulement à rouleaux coniques

Design:

Tapered roller bearings consist of an inner ring, an outer ring, tapered rollers and a window cage that holds the rollers in place. Generally, the inner ring, tapered rollers and cage that form the taper are a single unit that can be mounted separately from the outer ring.

The taper angle enables the tapered roller bearing to support high axial and radial loads in one direction. It is generally necessary to provide axial guidance in the other direction by opposing a second bearing. Incidentally, it is the bearing angle and axis that determine the ratio between axial and radial capacity.

 

Advantages :

  • Reduced friction, heat build-up and shoulder wear
  • Optimized load distribution along contact surfaces and reduced edge stresses at roller ends
  • Optimized finish of roller and raceway contact surfaces promotes the formation of a hydrodynamic lubricating film.
  • Reduced noise and vibration vibrations

 

Applications :

Tapered roller bearings are used in a wide range of industrial applications. They are ideal for guideways that have to withstand heavy loads. They are also found in applications where radial loads are high and rotational speeds are high.

Taper roller bearings are essential in sectors such as agriculture, construction, mining, engines and propellers. On the industrial front, paper mills, cement plants and oil companies are just a few examples of environments where tapered roller bearings are used.

Schéma de roulement à rouleaux coniques

III. Why choose a roller thrust bearing?

 

Roulement à rouleaux coniques

Design:

Tapered roller bearings consist of an inner ring, an outer ring, tapered rollers and a window cage that holds the rollers in place. Generally, the inner ring, tapered rollers and cage that form the taper are a single unit that can be mounted separately from the outer ring.

The taper angle enables the tapered roller bearing to support high axial and radial loads in one direction. It is generally necessary to provide axial guidance in the other direction by opposing a second bearing. Incidentally, it is the bearing angle and axis that determine the ratio between axial and radial capacity.

 

Advantages :

  • Reduced friction, heat build-up and shoulder wear
  • Optimized load distribution along contact surfaces and reduced edge stresses at roller ends
  • Optimized finish of roller and raceway contact surfaces promotes the formation of a hydrodynamic lubricating film.
  • Reduced noise and vibration vibrations

 

Applications :

Tapered roller bearings are used in a wide range of industrial applications. They are ideal for guideways that have to withstand heavy loads. They are also found in applications where radial loads are high and rotational speeds are high.

Taper roller bearings are essential in sectors such as agriculture, construction, mining, engines and propellers. On the industrial front, paper mills, cement plants and oil companies are just a few examples of environments where tapered roller bearings are used.

PLEASE NOTE:

 

When using bearings for a specific application, it's important to consider sealing.

The importance of sealing lies in its ability to protect your bearings from harmful elements such as dust, moisture and contaminants. By ensuring proper sealing, you can significantly extend the life, improve the performance and increase the reliability of your bearings. This significantly reduces the risk of premature wear and bearing failure.

Understanding bearing sealing

By following these tips, you should be able to choose the belts that are best suited to your application, and that operate safely and efficiently.

 

If you have any questions or comments on this definition, please use this form. Thank you in advance!

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