NSK bearing external design and noise

The three main reasons for the noise of NSK bearings are: dust on the bearing, scars on the bearing, and improper lubricant in the bearing. The following is a simple solution to the noise of NSK bearings. 1. There is dust in NSK bearings. The method to solve the noise of NSK bearings caused by dust: one can improve the cleaning method of bearings, and clean the bearings, shafts, seat holes and matching parts strictly before installation; two, remove foreign matter in the lubricant ; Three to improve the seal of the bearing; four to prevent the use of impure materials or plastic cages embedded with foreign objects. 2. The method of NSK bearing scars to solve the noise of NSK bearing caused by scars: firstly, do not knock the bearing during installation, assemble the NSK bearing with the shaft and then install it into the bearing seat to avoid bearing installation; secondly, avoid bearing corrosion and transportation when stocking Avoid shock and vibration; use high-viscosity grease. 3. Improper lubricant in NSK bearings The solution to the noise caused by improper lubricants in NSK bearings: Improper lubricants can be divided into three categories: first, use the wrong lubricant; second, lack of lubricant; third, lubricant aging and induration. To choose a suitable lubricant, the lubricant should be added according to the amount of lubrication, and the lubricant should be replaced regularly. External design CA can be arbitrarily (in series in the same direction, face-to-face or back-to-back) CB paired installation of single-row angular contact ball bearings CC When arranged back-to-back or face-to-face, the comparison between the internal clearance before axial installation and the normal value: small (CA), normal ( CB), the larger (CC) G can be any (co-directional series, back-to-back, face-to-face) paired single-row angular contact bearings. When arranged face-to-face or back-to-back, there is a certain amount of axial clearance GA in the bearing before installation (in series, back-to-back, face-to-face) GB Single row angular contact bearings installed in pairs GC When arranged face-to-face or back-to-back, there is a lighter (GA) medium in the bearing (GB) or heavier (GC) preload K tapered inner hole, diameter taper 1: 20 K30 tapered inner hole, diameter taper 1: 30 -LS bearing has a contact oil seal on one side, no oil seal convex groove in the inner ring- 2LS bearing on both sides LS oil seal N The cylindrical surface of the outer ring has a stop groove N2 There are two positioning grooves on the outer ring (180 degrees) PP Bearing (supporting roller bearing, cam follower bearing) Both sides have contact b oil seal RS bearing ( Needle roller bearing) one side has synthetic rubber or polyhydrocarbonate contact oil seal-RS1 bearing one side has steel plate synthetic rubber contact oil seal-2RS1 bearing has ES1 oil seal on both sides-RS bearing (needle roller bearing) on u200bu200bboth sides With RS oil seal - RZ bearing with steel plate synthetic rubber rubbing oil seal on one side - 2 RZ bearing with RZ oil seal X on both sides -Z dust cover on one side of the bearing (non-friction oil seal) -2Z dust cover on both sides of the bearing -ZN dust cover on the opposite side of the stop groove -2ZN bearing on both sides with Z dust cover, the outer ring has a stop Moving groove -ZNR is the same as -2Z, and with retaining ring -2ZNR is the same as -2ZN, and with retaining ring Previous page 12 Next page