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Table of Contents
(1) TA Series
(2) HK Series
(3) HF Series
(4) NK Series
(5) NA Series
(6) KT Series
(7) CF Series
Roller bearings are a common type of bearing that use rollers as rolling elements instead of balls. These rollers can be cylindrical, tapered, or conical, and the specific type of bearing depends on the shape and structure of these rollers. Roller bearings are typically used in applications that require handling high axial and radial loads, as they have a larger contact area and can distribute larger loads.
The most notable characteristics of roller bearings lie in their load capacity and structural design:
High Load Capacity:
Roller bearings are commonly used in applications that must accommodate high axial and radial loads.
Larger Contact Area:
Compared to ball bearings, rollers provide a larger contact area, allowing loads to be distributed more effectively.
Variety of Roller Shapes:
Depending on application requirements, rollers may be cylindrical, tapered, or conical.
The specific bearing type is determined by the shape and configuration of these rollers.
Tapered roller bearings, a type of separable bearing manufacture, are designed to handle primarily radial combined with axial loads. The bearing's load-carrying capacity depends on the outer ring's angle of the raceway, with a larger angle resulting in greater load capacity. The larger the angle between the outer raceway and the bearing's centerline, the greater the ability to withstand the ratio of axial and radial loads.
Go into Prosucts Page: Tapered Roller Bearings
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Tapered Roller Bearings Size Chart
TA needle roller bearings are a type of radial bearing with a small cross-sectional height. They are suitable for applications with limited radial space and moderate axial loads.
Go into Prosucts Page: TA SeriesHK needle roller bearings are a type of drawn cup bearing with a thin outer wall. They are designed to handle radial loads and provide excellent support for radial forces. The closed-end design protects the rolling elements from contamination.
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Go into Prosucts Page: HK Series
HF needle roller bearings are one-way clutch bearings that allow free rotation in one direction while locking the rotation in the opposite direction. They are often used in applications where a unidirectional motion is necessary, such as in overrun clutches.
Go into Prosucts Page: HF Series
NK needle roller bearings are non-separable bearings capable of carrying high radial loads. They have a high load-carrying capacity and are suitable for applications with limited space.
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Go into Prosucts Page: NK Series
NA needle roller bearings are similar to NK bearings but come with an inner ring. This makes them suitable for applications requiring precise shaft mounting and improved running accuracy.
Go into Prosucts Page: NA Series
KT needle roller and cage assemblies consist of a cage with needle rollers, suitable for applications with high rotational speeds and moderate radial loads. These bearings provide excellent performance in limited space.
Go into Prosucts Page: KT Series
CF needle roller bearings are cam followers with a stud-type design, enabling them to follow cam lobe profiles accurately. They are commonly used in various motion transmission applications, including conveyor systems and cam mechanisms.
Go into Prosucts Page: CF Series
Understanding the various types of roller bearings and their applications is crucial for selecting the right bearing for specific tasks. Each type of roller bearing has its unique advantages, making it suitable for different load conditions and environments. When choosing a roller bearing, it's essential to consider factors like load type, speed, precision requirements, and environmental conditions. Consulting with experienced mechanical engineers or bearing specialists can provide valuable insights and ensure optimal bearing selection for your machinery and equipment.
Extended reading:
The Ball Bearing Size Chart｜ISK BEARING
Miniature Ball Bearings: A Comprehensive Chart for Ball Bearings
Roller bearings use rollers (cylindrical, tapered, or slim needle rollers) as rolling elements, while ball bearings use steel balls. The key difference is contact area: rollers create line contact with a larger contact area, allowing them to distribute and carry higher radial and axial loads. Ball bearings suit higher-speed, lower-friction applications. Final selection depends on load direction, speed, and mounting space.
Needle roller bearings are a type of roller bearing whose rolling elements are slim, elongated rollers (needles). Compared with standard cylindrical rollers, needle rollers have a smaller cross-sectional height, delivering high radial load capacity where radial space is limited. Series such as TA, HK, NK, NA, and KT are all needle roller bearings, differing in inner-ring presence, outer-wall structure, and speed range.
The load capacity of a tapered roller bearing is mainly determined by the angle between the outer raceway and the bearing centerline. The larger that angle, the higher the proportion of axial load it can carry. Tapered roller bearings are separable and designed to handle combined radial and axial loads, common in drive applications with composite loading. The suitable angle should be evaluated against actual operating conditions.
HK series needle roller bearings feature a thin-walled drawn-cup structure; the closed design protects the rolling elements from contamination, suiting applications with very limited radial space and weight constraints. NK series needle roller bearings are non-separable with higher radial load capacity. If an inner ring is needed for better mounting and running accuracy, consider the NA series. Share load, speed, and mounting dimensions for accurate selection.
Please provide: bearing model or dimensions (bore / outer diameter / width), application and equipment type, load direction and magnitude, speed, operating environment (temperature, lubrication, contamination), and estimated annual volume. If you are evaluating an alternative supply or a custom requirement, drawings or existing samples help our assessment. The more complete the data, the better we can evaluate fit and provide a matching quote.
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