Four-point contact ball bearing

Four-point contact ball bearings are high-precision mechanical components designed to support both radial and axial loads in both directions. Their unique design allows them to combine compactness, light weight, and high load capacity while offering an extended service life.

Used in many industrial sectors, these bearings ensure good reliability even at high speeds. Due to their standard shape, they easily integrate into various mechanical assemblies while reducing the overall weight and footprint of the system.

At Rubix, we offer a wide selection of four-point contact ball bearings, tailored to the needs of all professionals seeking durable solutions that meet the most stringent technical requirements.

What is a four-point contact ball bearing?

A four-point contact ball bearing is a type of angular contact bearing capable of supporting combined loads - both radial and axial - in both directions. It consists of two rings, an inner and an outer, and a brass cage containing the balls distributed over four contact points.

This specific design allows for balanced load distribution across the different contact points, ensuring excellent stability and low friction. They differ from conventional bearings by their ability to handle significant loads with a reduced number of parts.

They are available in several dimensions - generally standard, to easily fit into various mechanical assemblies.

Thanks to their monobloc architecture, these bearings also exhibit high rigidity.

Advantages of four-point contact bearings:

Four-point contact ball bearings offer a unique combination of features that make them essential components for many industrial applications.

Due to their compact structure and limited number of parts, these bearings facilitate assembly and reduce the footprint of mechanical assemblies. Their inner and outer rings, combined with a brass cage, ensure uniform load distribution.

They enhance the precision and durability of systems while guaranteeing an optimal balance between performance and longevity! Their light weight and low friction make them perfect for installations requiring high energy efficiency and smooth rotation.

Indeed, their rigid design and angular geometry provide a significant advantage for machines operating under heavy loads, where reliability and precision are paramount.

Application areas and industrial uses:

Four-point contact ball bearings are used in many sectors where reliability and mechanical precision are essential: transmission systems, machine tools, electric motors, gear reducers.

In the automotive, aerospace, or robotics industries, they are used in mechanical assemblies where compactness and light weight are key criteria. Thanks to their technical characteristics and limited weight, these bearings ensure smooth, precise, and durable operation, even in the most demanding environments.

Selection and installation of the four-point contact bearing:

The choice of a four-point contact ball bearing depends on several technical criteria that are essential to consider to ensure the performance of the mechanical assembly:

the type and series of the bearing,
the nature of the loads,
the ratio between radial and axial forces.

The choice of rings (inner and outer) and the brass cage also directly influences the reliability of the system. It is also important to check the reference and product details before any purchase to ensure compatibility with other parts and components.

During installation, it is advisable to use the appropriate amount of lubricant and to check the dimensions and internal clearances. A good fit of the rings allows for effective load distribution and avoids any deformation! Some models may be supplied with an adhesive surface or special treatments to enhance adhesion and longevity.

Important to remember: the installation characteristics must always comply with the manufacturer's recommendations to ensure the safety and reliability of the installation.

Standards and technical compliance:

Four-point contact ball bearings comply with several international standards ensuring their quality, dimensional accuracy, and compatibility with other mechanical components. These standards ensure the reliability of the product, regardless of its application or usage sector.

ISO 15: defines the main dimensions of radial ball bearings, ensuring interchangeability between manufacturers.
ISO 492 / DIN 620-2: specifies dimensional and geometric tolerances according to the type of bearing (precision classes P0, P6, P5…).
ISO 5753: establishes radial and axial internal clearances, essential for longevity and high-speed performance.
ISO 76 and ISO 281: describe calculations for maximum static and dynamic loads, allowing for the estimation of bearing longevity.
ISO 683-17: governs the steels used for rings, balls, and other bearing parts, ensuring their mechanical strength.
ISO 1132: standardises the terminology, definitions, and symbols used in bearing design.

Compliance with these standards ensures perfect adherence to industry standards while guaranteeing precise assembly, stability of assemblies, and reliability of four-point contact ball bearings in all industrial applications!

Rubix brands and reliability

Rubix provides four-point contact ball bearings from the most recognised brands in the market, synonymous with precision, robustness, and sustainable performance.

FAG: a specialist in high-performance bearings, FAG develops models capable of supporting significant loads while maintaining smooth rotation. Their optimised design enhances longevity and wear resistance, even in the most demanding environments.
SKF: a global reference, SKF offers a wide range of standard four-point contact bearings, known for their reliability, precision, and adaptability to various mechanical assemblies.
INA: an expert in compact systems and angular bearings, INA designs lightweight and efficient solutions that provide an excellent compromise between weight, stability, and longevity.

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Discover now the range of four-point contact ball bearings available at Rubix, and benefit from solutions designed to enhance the performance, reliability, and durability of your mechanical assemblies!

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