Deep groove ball bearing seals are key components for normal operation of bearings in harsh environments. Bearing seals protect the bearings from erosion and pollution. Prolong the life of the bearing under good clean and lubricating conditions. Generally speaking, deep groove ball bearing seals are more effective than dust caps and are restricted by flexible rotation and lower speed rotation. In the design of bearing seals, the performance of the lubricant and the conveying system and the ideal working conditions must be considered.
For bearing applications, a new type of sealed, clean and lubricated bearing seal with ultra-high load capacity has been developed in order to withstand high loads, strong impact forces, and to prevent the intrusion of particles such as water and rust. Experience has shown that under contaminated operating conditions, debris particles can easily enter the bearing, and these debris particles can damage the raceway and cause stress concentration. In addition, if the lubrication is not uniform, hard contact of the metal surface will cause minor "peeling" damage, which will also cause stress concentration in the contact area. These two results will cause the metal surface at the stress concentration site to crack and eventually shorten the bearing life. Studies have shown that by changing the structure of the bearing steel, the working life of the bearing can be improved under the condition of impurity pollution or edge lubrication, and the ability of the bearing to release concentrated stress on the edge can be improved.
The best practical protective measure for a bearing is to stop it as soon as it appears. The new type of deep groove ball bearing seal has the above two advantages. This new type of hole bearing seal can both prevent the formation of negative pressure in the bearing and prevent water ingress, so that the main seal is not directly exposed to water, avoiding "breathing" in the water, and can also block impurities in the concave Features at the slot. Ordinary bearing seals use linear contact during rotation and stationary to maintain high-strength tight sealing performance. When this kind of seal works, surface contact is used instead of linear contact to meet the sealing requirements during bearing rotation. It does not produce a large negative pressure. In order to confirm the effectiveness of the new bore bearing seals, during the test, the operating speed range of the bearing was increased from 100r / min to 700r / min, and a radial load of 294kN was continuously applied, while spraying with about 100L / min water. During this period, the negative pressure of general bore bearing seals increases, while the new bore bearing seals suppress negative pressure and ensure the normal operation of the work.