Product family
JFK rolling bearings
The right solution for every load, speed, and operating condition
JFK Group offers a complete range of rolling bearings for industrial applications involving high and low loads, high speeds, or demanding operating conditions.
Ball bearings, roller bearings, needle roller bearings, self-aligning bearings, and ready-to-install bearing units: each product is selected to ensure verified quality, availability, and technical support at every stage of the project.
Ball bearings, roller bearings, needle roller bearings, self-aligning bearings, and ready-to-install bearing units: each product is selected to ensure verified quality, availability, and technical support at every stage of the project.
Guida tecnica
Rolling Bearings: Structure, Function, and Selection Parameters
Rolling bearings are mechanical components that support rotating elements while reducing friction through rolling elements—balls, rollers, or needle rollers—positioned between the inner and outer rings. Choosing the right type depends on the load direction, rotational speed, available space, and maintenance requirements. JFK Group supplies the complete range of industrial rolling bearings: JFK bearings are carefully selected, quality-checked, and backed by technical support. If your requirements go beyond the standard solutions available, we can design a solution based on your specific project.
JFK bearing units
Ball bearing units, roller bearing units, and bearings for bearing units. The solution for those seeking ease of installation without compromising performance.
JFK Needle Roller Bearings
NK/NKI needle roller bearings, K/KBK/KZK needle roller cages, drawn cup needle roller bearings, IR inner rings, combined bearings, stud-type track rollers, and needle rollers. Ideal when radial space is limited while the transmission of high loads remains a priority.
JFK roller bearings
Cylindrical roller bearings, tapered roller bearings, thrust roller bearings, spherical roller bearings, spherical roller thrust bearings, designed for high loads and demanding operating conditions. Ideal when load capacity is the critical parameter.Catalogue
Products in this family
JFK Combined needle roller bearings
Combined bearings integrate a radial needle roller cage and one or two axial cylindrical roller cages into a single component. This design allows the…
JFK cam followers
Cam followers are non-separable needle roller units with a threaded stud, ready for installation. The outer ring, available with either a cylindrical or spherical…
Support rollers
JFK needle roller track rollers are guidance units for applications on tracks, cams, and linear motion systems with high radial loads. Compared to ball…
SELECTION GUIDE
Things to consider before making a choice
The choice of rolling bearing depends on a combination of parameters that interact with each other.
The starting point is always the load direction: radial, axial, or combined. This is complemented by the rotational speed, which determines the most suitable type of rolling element and directly affects service life.
In addition to load direction and magnitude, the variables affecting bearing selection include available space, required rotational accuracy, operating temperature, environmental conditions, and lubrication requirements. In applications involving misalignment between the housing and shaft, self-aligning bearings are the preferred choice, as they are designed to accommodate angular deviations without compromising performance.
Solutions
Find the right solution for your application
01
Do you have a rotating component that needs support?
The optimal solution depends on the load type—radial, axial, or combined—and on the rotational speed. Deep groove ball bearings are the most versatile choice for moderate loads and high speeds; for axial or combined loads, angular contact ball bearings are considered, while cylindrical or tapered roller bearings are the solution for higher loads.
Suitable product families
02
Is your shaft subject to misalignment?
When there is misalignment between the housing and shaft, self-aligning bearings are the preferred choice, as they are designed to accommodate angular deviations without compromising performance. Available as self-aligning ball bearings for moderate loads and high speeds, or spherical roller bearings for heavy loads and demanding operating conditions.
Suitable product families
03
Do you have limited radial space?
When space is limited, industrial needle roller bearings are the most widely used solution: for the same inner diameter, they offer significantly higher radial load capacity than ball bearings, with a minimal cross-section. Depending on the application, choose drawn cup needle roller bearings, needle roller cages (K/KBK/KZK), or NK/NKI needle roller bearings with IR inner rings. NK/NKI needle roller bearings Needle roller cages
Suitable product families
04
Do you operate in demanding environmental conditions?
Extreme temperatures, moisture, chemicals, or food-processing environments require bearings designed to withstand these conditions without compromising performance. For moisture and aggressive environments, stainless steel ball bearings are the preferred choice; for high-temperature applications, high-temperature ball bearings are the solution.
Suitable product families
Have a specific requirement?
Let’s discuss your project
JFK’s technical team analyses loads, speeds and operating conditions to identify the right solution.