INTRODUCTION
Ball bearing seats are essential components of certain types of machinery. They provide a mounting point for a ball bearing, allowing it to move smoothly along a circular path. The specific type of ball bearing seat used depends on several factors, such as the type and size of the ball bearing, the plane of operation, and the degree of precision required. This article discusses the different types of ball bearing seats, and offers an explanation of the codes used to identify them.
TYPES OF BALL BEARING SEATS
Ball bearing seats can be broadly classified into two main types: radial and thrust. Radial ball bearing seats, also known as sleeve bearings, consist of a cylindrical or conical inner surface that supports the radial load of the ball bearing. They are commonly used in applications involving low speed and medium torque. Thrust ball bearings, on the other hand, are designed to support thrust or axial loads. These bearings possess a flat inner surface, and are commonly used in applications involving medium speed and high torque.
EXPLANATION OF BALL BEARING SEAT CODES
Each type of ball bearing seat has its own unique code that allows it to be easily identified. The code consists of a series of letters and numerals that indicate the size, shape, and other pertinent characteristics of the seat.
Letters:
The first letter of a bearing seat code indicates the type of ball bearing seat. S is used for radial bearings, while T is used for thrust bearings.
The second letter of the code indicates the type of material from which the seat is made. The most common material is steel (indicated by an S), but other materials, such as aluminum (indicated by an A) and bronze (indicated by a B), are also used.
The third letter indicates the type of inner surface of the seat. C is used for cylindrical, P is used for conical, and F is used for flat.
Numerals:
The first set of numerals indicates the size of the seat. The first number is the inner diameter, and the second number is the width.
The second set of numerals indicates the degree of precision of the seat. Generally, the lower the number, the more precise the seat. For example, a seat with a code of SSTC 9x18 2 has an inner diameter of 9mm, a width of 18mm, and a precision level of 2.
CONCLUSION
This article has served to provide an explanation of the codes used to identify different types of ball bearing seats. Radial bearings are identified by an S, while thrust bearings are identified by a T. The second letter indicates the material, while the third letter indicates the type of inner surface. The numerals indicate the size and degree of precision, with the first two numbers indicating the inner diameter and width, and the third number indicating the precision level. It is important to be aware of these codes when ordering new ball bearing seats for a particular application.
