High Precision Ball Bearing is a special type of ball bearing designed to support moderate to heavy radial and axial loads

What Is a High Precision Ball Bearing?

High Precision Ball Bearing is a special type of ball bearing designed to support moderate to heavy radial and axial loads. They are also capable of operating at high speeds. These bearings are often used in machine tools, aerospace, and high-precision instruments. The performance and reliability of these bearings directly affect the life and overall functionality of the equipment they are installed in. As such, they must be of the highest quality and accuracy.

High-precision ball bearings are made with stringent tolerance levels, measured in micrometers (mm). These standards ensure that the bearings operate with minimal variation from the specified dimensions. They are also equipped with special lubrication that minimizes friction and heat generation, which prolongs their lifespan. These features make these bearings ideal for demanding applications in a variety of industries.

The precision of a ball bearing is determined by its ability to reduce rotational friction and support axial and radial loads. This is achieved by utilizing at least two races to contain the balls and transmit the loads through them. In most applications, one of the races is attached to the rotating assembly (e.g. a shaft or hub), while the other race is stationary. As the bearing races rotate, the balls roll within them, which creates a much lower coefficient of friction than would be present if two flat surfaces were sliding against each other.

In addition to the geometric tolerance of the bearing, its ability to sustain axial loads requires careful consideration of the contact area between the balls and the raceway. This is especially critical with a radial load, because an inadequate contact area may result in a radial load capacity that is significantly less than expected. This problem is particularly common with Conrad-style ball bearings, and it can invalidate general rules of thumb regarding the relationship between radial and axial load capacities.

Hangzhou Huaxing Kechuang Holding Group Co., Ltd offers a wide range of high-precision angular contact and spindle bearings that are specifically designed for use in machine tools. These high-speed bearings can withstand both radial and thrust loads and are available with open or sealed designs. They are manufactured using premium materials, which allows them to withstand high loads and maintain a long service life. They are also highly durable and are backed by a warranty for peace of mind.

The performance of a high-precision bearing is greatly influenced by the stability of the cage, which is located inside the ball bearing. Previous studies have focused on determining the stability of the cage by measuring the motion trajectories. To achieve this, an experimental instrument was developed that drives the inner ring of the test bearing by a high-precision air spindle and acquires images of the moving cage with a camera. The data from the cameras are then processed to obtain the coordinates of the tracking spots, which allow for a precise analysis of the cage dynamics. This information can be used to develop a model that predicts the cage's behavior and evaluates its stability.