Radial ball bearing

A radial ball bearing is a friction-reducing device that carries loads radially about its axis. A subtype of ball bearing that operates by using lubricated steel balls placed between two grooved rings. They are often called radial deep groove ball bearing or Conrad bearings. While these types of radial ball bearing can handle some axial thrust, thrust or roller bearings should be used in designs with high axial loads.

Radial ball bearings are the most widely used type of rolling-element bearing in the world today due to their versatility and overall performance. Below is a cross-sectional view of a typical radial ball bearing. These bearings are produced with high-quality materials and exacting tolerances. Each of the individual components such as the rings, balls, cage, shield or seal, and lubricant contribute to the bearing’s ability to perform in a variety of applications and environments.

Radial Bearing Vs Ball Bearing

One of the most commonly used devices in automotive and other rolling applications is radial bearings. It helps the wheels spin smoothly and without friction. These bearings come in a variety of configurations and are made from different materials.
Unlike other types of bearings, radial bearings use a deep groove structure. This enables them to handle high radial loads. However, they cannot withstand axial loads. Therefore, if the axial load exceeds the radial load, it is better to use a thrust bearing.
Ball bearings are usually constructed using carbon steel balls and inner and outer rings. These elements are separated by steel bands that hold them together.

Radial Ball Bearing Dimensions

Bearing torque can be attributed to many variables, such as:

Ball size
number of balls
Bearing cage type
Bearing radial clearance
Bearing Lubricant Type and Fill Percentage
applied bearing load.
In addition, bearing torques are classified into three levels, tested under light loads and oil lubrication:

Starting torque is a measure of the torque required to start the rotation of one race of a bearing. This is significantly higher than the running torque.
Average running torque is the average torque level that a bearing will experience at a consistent RPM.
Peak operating torque is the maximum torque a bearing can withstand, but it is difficult to determine. This provides a measure of consistency for a batch of bearings.
Proper lubrication can significantly reduce torque values. Bearing material affects torque. Lightweight metal and plastic cages/retainers provide very little torque at moderate speeds and low inertia.

Single-row Angular Contact

  • Precision options come in the 7900, 7000, and 7200 series.
  • Offered with a 15° contact angle, C and a 25° contact angle, AC.
  • Can be offered with ceramic balls.

Self-aligning Ball Bearings

  • This type is constructed with the inner ring and ball assembly contained within an outer ring which has a spherical raceway for self aligning.

    Double-row Angular Contact

    • The construction of this ball bearing is similar to mounting two single row angular ball bearings back to back(DB).
    • Capacities of double row radial ball bearing is less than single row since fewer balls can be inserted per row.

    Characteristics Of Radial Ball Bearings:

    Radial contact ball bearing are easily damaged when subjected to shock or impact loads.

    Radial ball bearings require lubrication and interior surface must be protected from contaminants or other debris. Shields or seals are highly recommended. 

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    What Is a Radial Ball Bearing?

    The radial ball bearing is a kind of precision bearing, and its transmitted load action is radial to the axis of the shaft. Due to their versatility, they are the most popular and widely used in industrial machinery applications. Radial ball bearings generate very little friction when carrying loads.

    Radial Thrust Ball Bearing

    As radial ball bearing manufacturers, we will do our best to serve you. If you need customized products, or the products you need are not found in our website, or need a product catalog, don’t worry, more of our products are still being uploaded. You can email us directly, we will reply you within 24 hours!

    Proven friction reducers and radial ball bearings use rolling elements to maintain separation between moving parts while enabling linear motion and supporting axial and radial loads. Countless appliances, machines, engines, assemblies and systems with moving parts rely on radial ball bearings to function properly and efficiently, making these small spheres particularly prominent in industrial, warehouse, manufacturing and commercial environments

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    Radial Ball Bearing Lubrication

    Many different methods can lubricate radial ball bearings. The type of lubricant selected depends on the type of application. Typically, grease is used for low-speed applications, while oil is usually used for high-speed applications. Oil-based lubricants are usually made from natural mineral oils, while greases are usually based on polyethylene glycols or synthetic oils
    There are two types of grease – thickened and thinned. Thickening the bottom of the grease helps it stay in the bearing, but it will eventually oxidize. Diluted grease is capable of withstanding temperatures up to 300 degrees Fahrenheit.
    Synthetic oils are made from polyethylene glycols or fluorocarbons. These greases are more resistant to many chemicals and can provide a higher safety margin when lubricating bearings. Polyurea-thickened synthetic oils also prolong grease life at higher temperatures.

    Radial Ball Bearing Applications

    Radial ball bearing applications have a wide variety of uses. They can be used in pumps, motors, escalators and conveyor belts with surges. They also serve as supports for the roller shafts in the assembly.
    To determine the load carrying capacity of a radial ball bearing, the direction of load, radial forces and internal clearance must be considered. Some applications may require preloading for optimal performance. Preload can be achieved by applying a spring, washer, bushing or other force to the bearing.
    Internal clearance is a key factor for vibration in radial ball bearings. It also affects the load distribution within the rolling elements of the bearing.
    In addition to internal clearance, the design of the bearing also affects the radial load. For example, grooves in the outer ring allow the rolling elements to fit tightly together, or flanges simplify the axial positioning of the bearing.

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