Angular Contact Spindle Bearings

The selection of angular contact spindle bearings for your application is usually straightforward. However, switching from one brand to another may prove to be a tricky process. In some cases, the original bearing supplier may have trouble meeting demand and so it may be necessary to switch brands. In such a case, AHR International can provide you with an alternative solution that is compatible with your machine. The company works with several of the reputable brands, so you will be able to find one that suits your needs.

Angular contact bearings

Spindle bearings are available in several different shapes, sizes, and materials. They are commonly available in single row screw bearings, high-speed spindle angular contact ball bearings, and imperial precision ball bearings. Depending on the manufacturer and model, they can be ordered in duplex, quadruplex, single, or triplex configurations. Other options include custom single-row bearings and self-aligning radial ball bearings.

Single-row angular-contact ball bearings are similar to spindle bearings, except they have a single shoulder. These bearings support radial and thrust loads in one direction. They are often used in machine tool spindles. For high-speed applications, ceramic balls are often incorporated into the design. For protection and lubrication, sealed configurations are also available.

Arrangement

Spindle bearings are angular contact ball bearings that are used in spindle assemblies. The outer and inner rings of these bearings are angled to accept axial loads in only one direction. A spindle bearing can be a single-ball bearing or one of two ball bearings arranged back to back. It is important to correctly line up these bearings in order to ensure proper functionality. Incorrect lining up will result in reduced service life, increased friction losses, and higher operating temperatures.

Spindle bearings are typically installed back to back. This arrangement ensures a complete preload on the bearings. This arrangement is critical for proper spindle operation, as it provides rigidity. However, it is not recommended for high-temperature applications. The preload on the bearings increases as the shaft grows.

Preload options

Preload options for spindle bearings can be varied to meet the needs of different applications. Depending on the shaft-bearing configuration, preload can affect vibration behavior significantly. Increasing the preload decreases the amplitude of vibration peak-to-peak. Moreover, it increases the rigidity of the bearing by reducing the clearance inside it. However, the right preload should be chosen carefully as over-preloading the bearing can adversely affect the material life and wear of the bearing.

Proper bearing preload is crucial to ensuring the rotary accuracy of spindle bearings. It also helps to eliminate excess play and improves stiffness in the assembly. The right preload can also prevent skidding of the rolling elements, ensuring smooth operation.

Manufacturer

Spindle bearings are important to the operation of CNC machines. They need to be reliable and precise, and this means choosing the right spindle bearings. They may also have special features to prevent premature failure. A Manufacturer of spindle bearings with angular contact has the technology to meet these needs.

Angular contact spindle bearings have a special feature that gives them increased endurance and operational speed. This is achieved through reduced outer ring shoulders, which create a larger offset during bearing assembly. This allows for larger balls and stronger cages, which can withstand high speeds.

Applications

Spindle bearings with angular contact are designed to enhance the speed and precision of spinning machine tools. They are available in a variety of configurations and dimensions, and are ideally suited for very high speeds and high torques. In many cases, they are used in conjunction with other machine tool components.

They are commonly used for high radial and axial loads. They also provide high stiffness. They can be installed side by side or with spacers for improved lubricant supply and heat dissipation. Their separable inner rings also improve rotational accuracy.