In the following case, Lily Bearing helped a client to customize a solution about super-precision angular contact ball bearings. This client is a main supplier of analytics for the food and agricultural industries worldwide. It can help optimize the use of food and agricultural resources by smart analytics. Among the client’s optical devices, the grade mirror is an ultra-precise instrument which can provide a new and intelligent way for food analysis.
Initially, the client used a kind of shaft only designed for deep groove ball bearings while designing the shafts of the optical grade mirrors. However, the precision of the deep groove ball bearings matched with the shafts of the grade mirror could not meet the requirement. In addition, the client was not convenient to change the design of the shafts again. In order to find more suitable bearings with higher precision on the basis of the original shaft design, the client made a comparison among many bearing suppliers and finally selected super-precision angular contact ball bearings from Lily Bearing. Engineers from Lily Bearing analyzed in a deep way according to the client’s actual working conditions.
Comparison in design between deep groove ball bearings and super-precision angular contact ball bearings
First of all, in terms of the structure and the loads, super-precision angular contact ball bearings have asymmetrical raceways. This structure can accommodate the spherical rolling elements of a bearing at a certain angle. This structure can also ensure that super-precision angular contact ball bearings have a high limiting speed and can bear both radial and axial loads, as well as loads from one direction only, such as pure axial loads. In addition, the angle between the bearing and its axis determines the magnitude of the axial load. The larger the angle between the bearing and its axis, the larger the axial load the bearing can bear.
In addition to having a high load capacity, super-precision angular contact ball bearings have high stiffness. They can operate at extremely high speeds. Further, super-precision angular contact ball bearings have small cross-sectional areas and low heat generation. They can extend bearing life to some degree.
As far as the client's working conditions concerned, its optical grade mirror is an ultra-precision instrument, and thus the advanced equipment requires more excellent bearing performance. According to the client's demands, Lily's engineers used the sealed type with ceramic Balls (Super Precision) for the grade mirror. In the design, ceramic balls with high performance were arranged orderly in super-precision angular contact ball bearings. Thus, a grade mirror is fixed and then rotated with a limit of 100 degrees of rotation back and forth. The way of the bearing designing is proper because there are almost no loads. It can meet the client's needs of very low bearing vibration. In addition, among the grades of super-precision angular contact ball bearings, P2 is the most precise. In order to ensure the high efficiency of the grade mirrors, experts recommended super-precision angular contact ball bearings with the grade P2, as P2 is the most precise grade. High stiffness is also one of the main performance challenges in the specific application of grade mirrors. The reason is that the extent of elastic deformation determines the efficiency and accuracy of the optical grade mirrors under a certain load. Super-precision angular contact ball bearings are high stiffness bearings and thus make the grade mirrors operate well. Lily’s super-precision angular contact ball bearings can bear heavy loads and provide high rigidity as well as high dynamic capability. They can also tackle challenges of high system stiffness with ease and meet the requirements of growing performance.
Sealed Super-Precision Angular Contact Ball Bearings with ceramic balls
In addition, engineers mentioned that the super-precision angular contact ball bearings have been well-lubricated, since the client's grade mirrors are often exposed to the wet or corrosive environment. Proper grease or oil can ensure the balls and the raceways of super-precision angular contact ball bearings operate smoothly. Engineers used high-quality grease which complies with FDA regulations and has been approved and registered by the National Sanitation Foundation (NSF). The grease has proved to be waterproof, anti-corrosion and also non-greasy. It can ensure stable and continuous bearing operation. What’s more, during the proper run-in process, super-precision angular contact ball bearings can achieve the lowest friction and the lowest temperature even with minimal use of lubricant. The grease collects on every side of the super-precision angular contact ball bearings. It is like an oil storage tank, making oil penetrate into the raceway for effective lubrication over a long period of time. Further, experts matched the super-precision angular contact ball bearings with seals, which can increase grease life by more than 1.5 times.
The solution of super-precision angular contact ball bearings won good comments from this client in the end. In the email, the client mentioned, "...... Your super-precision angular contact ball bearings have many advantages ...... the low heat generation, the low noise and the low vibration level, what’s more, the high bearing capacity, the high reliability as well as the high precision ......" It is true that the accuracy of super-precision angular contact ball bearings from Lily Bearing can be measured in the millimeter level. These bearings, which can accommodate shafts from 7 to 140 mm, are made according to two tolerance classes and two contact angles, following the requirements of both the speed and the stiffness.
Indeed, Lily Bearing has long been enjoying a good reputation in providing high-quality super-precision angular contact ball bearings. Besides standardized ones, engineers also help customize the proper super precision angular contact ball bearings according to their actual needs and working conditions. They will take into account different technical parameters such as the precision, the stability, the fit as well as the clearance. Further, the environmental protection is also a necessary consideration. No wonder Lily’s customized super-precision angular contact ball bearings won the praises from different clients. This is primarily due to more than 20 years of bearing manufacturing experience. Besides, Lily Bearing also provide top-torch services. The professional staff are always ready to help clients select proper bearing models and give detailed professional explanations according to their working conditions. In the daily use of bearings, if any problems occur, the professional service stuff will communicate with the clients in a timely way and provide feasible solutions.