Installation method of FYH block bearing set screw assembly

The biggest feature of the rolling bearing with house is that it is easy to install and use. However, there is a risk of early breakage of the bearing unit if it is installed or used incorrectly. Therefore, in order to exert the original performance of the rolling bearing with a block, it is necessary to use it correctly and install it correctly. Installation with set screw assembly When installing the bearing to the shaft with the set screw, it is sufficient to tighten the 2 set screws on the inner ring of the bearing with the specified torque. However, for applications subject to vibration and shock, applications for forward and reverse rotation, applications where starting and stopping are often repeated, etc., the surface of the shaft where the set screw is in contact with the shaft should be cut with a flat groove (Fig. 14.1) or drilling holes (Fig. 14.2). Therefore, the tightening effect of the set screw is greatly increased. In applications where there is a large axial load and severe vibration, use a stepped shaft and fasten the bearing inner ring with a nut (Fig. 14.3). For the dimensions of the stepped shaft, refer to [ 9-axis and base design ]. FYH Rolling Bearings with Houses are equipped with double-point set screws with good shaft tightening performance as standard, but set screws suitable for various applications and conditions are also available (refer to Table 14.1). The installation procedure of a housed rolling bearing with a set screw is shown below. (1) Check whether the rigidity of the base, the flatness of the mounting surface, and the dimensional tolerance of the shaft are qualified. In addition, check whether there are any problems such as bending, scratches, burrs, etc. on the shaft. (2) Check that the tip of the set screw does not protrude from the inner diameter of the bearing. (3) Insert the bearing with seat on the shaft and place it in the specified position. When installing the interference fit on the shaft, use the following methods. Press-fit the bearing with a block onto the shaft with a press, cool the shaft for shrink fit, heat the bearing with a block in an air bath (below 100°C) for shrink fit, etc. Avoid using a hammer, etc. to strike the side of the bearing inner ring and press it into the shaft. (4) Set the bearing with seat on the fixed position of the base and fix it with bolts (Fig. 14.4). Use a torque wrench to tighten the bearing housing mounting bolts to the specified torque. For the tightening torque of the mounting bolts, please refer to Appendix 3 at the end of the volume.