JFK Tapered roller bearings
JFK roller bearings
- High combined loads
- Tilting moments
- Contact angle up to 30°
Tapered roller bearings, also known as conical roller bearings, are generally separable bearings with tapered raceways on both the inner and outer rings, designed to withstand high radial loads, axial loads and tilting moments. The line contact between rollers and raceways provides higher load capacity than ball bearings, while the contact angle determines the distribution between radial and axial load components: the larger the angle, the higher the axial load capacity.
JFK Group offers single-row tapered roller bearings in the 302, 303, 313, 320, 322, 323, 329, 330, 331, 332, and T series.
Tapered roller bearings are generally separable: the inner ring with the roller and cage assembly (cone) can be separated from the outer ring (cup), simplifying mounting. They are also available in IKOS Design: pre-set, non-separable units with factory-defined preload, ready for installation without adjustment.
Tapered roller bearings are generally mounted in pairs or in O or X arrangements to handle axial loads in both directions. Typical applications include gearboxes, transmissions, vehicle wheels, machine tools, construction machinery and agricultural applications.
Versions
How to choose the right tapered roller bearing
The selection mainly depends on the magnitude of the axial load, the need for clearance adjustment during mounting, and the available installation space.
Standard single-row tapered roller bearings
The most widely used version. Separable tapered roller bearings consisting of a cone (inner ring with roller and cage assembly) and a cup (outer ring). The logarithmic profile of the rolling surfaces ensures optimal stress distribution and eliminates edge stresses. Axial clearance or preload is adjusted during mounting by positioning the cone and cup. To be mounted in pairs or in O or X arrangements to handle axial loads in both directions. Separable · Logarithmic profile · Mounting clearance adjustment
IKOS Design tapered roller bearings
Pre-set non-separable units with factory-defined preload. They eliminate the need for mounting adjustment, reducing installation time and ensuring consistent and repeatable performance. IKOS Design tapered roller bearings are suitable for applications where preload accuracy is critical or where field adjustment is not feasible. Factory-defined preload · Ready to install · No adjustments required
Performances
Design and performance features
Tapered raceways and logarithmic roller profile for high combined loads and long operating life.
Tolerances
Normal (PN) as standard Manufactured with Normal (PN) tolerance as standard. Available in P6 and P5 upon request.
Load
Radial loads, axial loads, and tilting moments The conical geometry allows the bearing to support radial loads, axial loads and tilting moments simultaneously. The axial load capacity increases with the contact angle.
Roller geometry
Logarithmic for optimal distribution The logarithmic profile of the rolling surfaces of tapered roller bearings ensures uniform stress distribution along the entire roller length, eliminating edge stresses and increasing operating life.
Mounting
Generally in pairs Tapered roller bearings are generally mounted in pairs or in O or X arrangements to handle axial loads in both directions. Axial clearance or preload is adjusted by changing the relative position of the cone and cup. IKOS Design versions do not require adjustment.
Separability
Separable cone and cup The separability of the cone and cup significantly simplifies mounting and component replacement, allowing the two elements to be installed independently.
Internal clearance
Adjusted during mounting for standard version For the standard version, axial clearance or preload is set during mounting. For IKOS Design, preload is factory-defined and requires no adjustment.
Mounting
Mounting of tapered roller bearings
Standard tapered roller bearings are generally mounted in pairs. Axial clearance or preload is adjusted by changing the relative position of the cone and cup: this adjustment is essential to ensure the expected performance. For IKOS Design versions, preload is factory-defined and no adjustment is required.
Installation Mounting
- O-shaped arrangementThe load lines diverge towards the axis. The tapered roller bearing supports axial loads in both directions with high rigidity. Suitable for applications with significant tilting moments.
- X-shaped arrangementThe load lines converge towards the axis. It supports axial loads in both directions with lower rigidity than the O arrangement. Less suitable for applications with high tilting moments.
- IKOS Design InstallationPre-set unit ready for installation. Preload is factory-defined: no adjustment required. Fast installation with guaranteed and repeatable performance.
Technical data
- Tolerances
- Normal (PN) as standard
- Load
- Radial loads, axial loads, and tilting moments
- Roller geometry
- Logarithmic for optimal distribution
- Mounting
- Generally in pairs
- Separability
- Separable cone and cup
- Internal clearance
- Adjusted during mounting for standard version
Applications
Applications
Components and application support for every industrial environment.
Transmissions and axles
Gearboxes, gear sets and transmission systems with high combined radial and axial loads. IKOS Design versions reduce mounting time and ensure consistent performance even in series production.
Automotive / Motorcycles, Trucks & Buses
Wheels, differentials and transmission systems subjected to high combined loads and tilting moments. Tapered roller bearings are the standard choice for the vast majority of wheel applications in the truck sector.
Agriculture
Agricultural machinery transmissions with combined loads and tilting moments under severe operating conditions. Structural robustness and the availability of special versions ensure long-term reliability.
Construction Equipment
Traction gearboxes, slewing systems and transmissions subjected to high loads, shocks and vibrations. The logarithmic roller profile and the ability to withstand tilting moments make them suitable for the most demanding applications.Documents data
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Please also consider these alternatives: When the load is predominantly radial and no significant axial component is present, cylindrical roller bearings offer higher radial load capacity with higher speed capability. When combined loads are accompanied by significant misalignment between housing and shaft, spherical roller bearings provide tolerance to alignment errors. When axial load is predominant and speed is high, angular contact ball bearings provide the same function with lower friction and higher speed capability.
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