KOYO bearing type selection and installation method

When choosing KOYO bearing according to the size of the bearing, specifications, as well as the rotational speed and so on to select KOYO bearings conform to the scope of our machine use, the following simple analyse: first, the restrictions on the size of the bearing. Usually KOYO bearing can install space is restricted. In most cases, the diameter of axle ( Or bearing inside diameter) Based on mechanical design or other design constraints. So bearing type and size of the choice is determined according to KOYO bearing inside diameter and. As a result, the main dimensions of the standard KOYO bearing table are compiled according to the international standard diameter. The size of the standard KOYO bearing form is various, in machinery design had better use standard bearing ( This design to KOYO bearing is easy to purchase, just as an aside, here some KOYO bearing model does have a catalogue, but some non-standard bearings in China there is no spot, futures will be a long time, sometimes to consider when KOYO bearing selection so late time cost and the cost of replacement) KOYO bearing load, the load on the bearing, the nature, size, direction is changeable. Usually, the basic load rating on dimension table are displayed. Axial load and radial load, and so on, but also is important to choose suitable KOYO bearing. When the size of the ball and needle bearing fairly, needle roller bearing is usually have higher load capacity and bear the larger vibration and shock loads. Second, the speed of the bearing. According to allow rotation speed is KOYO bearing type, size, precision, cage type, load, lubrication, and cooling way. KOYO bearing table lists the standard precision bearings allow speed under oil lubrication and grease lubrication. Usually, deep groove ball bearings, automatic self-aligning ball bearings and cylindrical roller bearings are suitable for high-speed operation. Third, KOYO bearing tolerance. KOYO bearing dimensional accuracy and rotation accuracy is according to ISO and JIS standard. For high-precision and high-speed machines, recommend the use of level 5 or above precision bearing, deep groove ball bearings, angular contact ball bearings and cylindrical roller bearing is suitable for high precision mechanical operation. Rigidity, when KOYO bearings rolling element and raceway contact pressure, will produce elastic deformation. Some mechanical need to minimize the elastic deformation. Roller bearing is smaller than ball bearings produced by elastic shape variables. Install the self-aligning ball bearing, CARB toroidal roller bearing, spherical roller bearings and tapered hole of high precision cylindrical roller bearing KOYO, to determine the radial internal clearance decreased value or cone base on axial forward distance, measure the amount of interference. Clearance decreased value and axial forward distance instruction, see related products. Small KOYO bearing small KOYO bearing can use nut, to advance to the cone base. In the case of the collar, then use the sleeve nut. Small sleeve nut available back into the bearing hole. Available to hook spanner or pneumatic wrench and tighten the screw as well. Before installation, should be on the surface of shaft and sleeve slightly a little oil. Large and medium-sized KOYO bearing large KOYO bearing the installation force increased significantly, and should use the hydraulic nut and/or the filling method. The above two methods can significantly simplify the process of installation. Operating hydraulic nut and filling equipment for the oil injection method is used, there is supply. Detailed information about these products, see the line record the relevant part of the 'maintenance and lubrication products'. When using hydraulic nut bearing installation, it must be positioned in the thread section of the journal or the sleeve on the thread of the ring piston abuts KOYO bearing inner ring, shaft nut or retaining ring on the shaft end. Through the pump oil into the hydraulic nut to safe and accurate force installation, move upward in axial piston. Using hydraulic nut, spherical roller bearings installed in the oil injection method, oil at high pressure injection KOYO bearing and shaft neck, forming a layer of oil film. This layer of oil film split mating surface, significantly reduce the friction between the mating surface. In the bearing directly installed to the cone axis neck, generally in this way, but also used in the designed for filling method of set and pass the installed package KOYO bearing. Oil pump or the necessary pressure lubricator, the groove on the shaft or sleeve and oil channel, the oil injection between mating surface. KOYO bearing design layout, must consider the necessary groove is arranged in the shaft and the channel. Spherical roller bearing installed on the grease groove of withdrawal, with the oil into the matching surface, and, in turn, tighten the screws, to press the withdrawal sleeve into the bearing hole.