CNC machine tool spindle bearings play a crucial role in the operation of CNC machine tools in practical applications, and are very core components of machine tools and turntables. So what types of bearings do we include in CNC machine tool spindle bearings in practical applications? The well-known CNC machine tool spindle bearings can be mainly divided into precision angular contact ball bearings, cylindrical roller bearings and tapered roller bearings. The first is precision angular contact ball bearings; precision angular contact ball bearings are the most common in CNC machine tool applications. Angular contact ball bearings are a point contact, and its inverted body is a ball (different from the linear contact of a roller bearing), Therefore, it can bring higher speed ratio, smaller calorific value and better rotation precision. There are some particularly fast CNC machine tool spindle bearing application scenarios, and composite bearings with ceramic balls are also used. Compared with the traditional fully hardened bearing steel ball, the ceramic ball bearing relies on its ceramic ball raw material, so that it has the characteristics of high bending stiffness, high-speed rotation, heat resistance and long service life, and thus achieves the high-end users' demand for CNC lathe bearing products. requirements. The contact angles of precision angular contact ball bearings are mostly 15 and 25; the contact angle of 15 has a very high speed ratio, and the contact angle of 25 has a higher axial load capacity. Because the selection of preload is particularly relevant to the application of high-precision angular contact ball bearings, in places with high installation and high rigidity, small and medium-sized or super-heavy bearing preloads are generally used; In the precise application place, in the initial model selection of the bearing, care must be taken to select the appropriate preload. Preload is generally divided into three types: light, medium and small, and super-heavy. Generally, light preload is more common. In order to better facilitate the application of users, as a professional CNC machine tool spindle bearing manufacturer, we widely provide bearings with pre-milled bearing inner holes and preloaded bearings, which is what we generally refer to as all-round matching high-precision angular contact ball bearings. These bearings eliminate the need for customer preload adjustments, which in turn saves installation operations. The second is cylindrical roller bearings; cylindrical roller bearings and precision angular contact ball bearings are generally used in conjunction with thrust bearings. This CNC machine tool spindle bearing can carry a large axial load and allow high speed ratio. The multi-row roller bearings in the bearing are arranged in a cross-type method, and the undulation frequency is greatly improved when rotating, and the vibration amplitude is reduced by 60% to 70%. As a professional CNC machine tool spindle bearing manufacturer, the internal structure of the cylindrical roller bearings we produce adopts rollers arranged in parallel, and spacers or spacers are installed between the rollers, which can prevent the rollers from tilting or the rollers from each other. The friction effectively prevents the increase of the rotational torque, and has the characteristics of fast speed, low noise, high precision, long life, high temperature resistance and small friction coefficient. The third type is tapered roller bearings; in some heavy-duty and high-speed CNC machine tool applications, such as the barren grinding of steel castings, oil pipeline threading machines, super-heavy CNC lathes, etc., it is generally more suitable Use tapered roller bearings. In the application of CNC machine tool spindle bearings, as a professional manufacturer for 33 years, we mainly focus on precision angular contact ball bearings and cylindrical roller bearings in the application of CNC machine tools. The design is optimized. We have an elite R&D team to support customization!