SKF wheel side bearing transverse dynamic testing steps

SKF wheel side bearing end up moving along the spindle axis is refers to the wheel hub assembly to move freely, it is recommended to use a dial indicator to measure bearing end up momentum wheel side ( As shown in figure 1) 。 Figure 1 SKF wheel bearing end up moving detection steps: step 1, to ensure that the brake drum and wheel hub fastener has been in accordance with the manufacturer's specifications binding. Step 2, attach a dial indicator and magnetic base adsorption in the bottom of the wheel hub and brake drum. Step 3, adjust the dial indicator to plunger or pointer to the main shaft end face, and its trajectory can be basic and main shaft axial parallel ( Note: the aluminum alloy wheel hub, attach a dial indicator and the magnetic base adsorption at the bottom of the brake drum) 。 Step 4, turn the dial indicator measuring contrate makes the zero calibration is just on the dial pointer, zero is completed. For digital dial indicator, press 'zero' button directly. Step 5, hold the wheel hub unit 3 and 9 o 'clock position, swinging its bearing seat at the same time, read the bearing face the biggest leap into momentum values ( Note: if you move beyond specification, please refer to the corresponding SKF related technical literature to adjust scheme) 。 SKF wheel hub bearing installation: when installing a SKF wheel hub unit parts, to ensure that the center of the wheel hub inner hole and shaft concentricity. By the aid of appropriate mounting bracket can effectively avoid the installation process of spindle, screw thread, and seals to scratches and damage. Install the lateral bearing inner ring components and the adjusting nut. Tighten nut until it completely on tight bearing inner ring components. In the above steps can't use pneumatic tools. Don't remove until center nut locking completely auxiliary mounting bracket, otherwise it may damage the seals, resulting in oil leakage. Remove auxiliary mounting bracket and ensure the bearing installed correctly in the wheel hub. Check whether the bearing can rotate freely. Must not allow direct contact with the seal of the hub. Don't try to manual assembly hub. Whether hub coat tire, not in the absence of mechanical tools help for installation. Some common failure forms when using SKF wheel hub bearing, China bearing network ( Hereinafter referred to as:) Share the following related SKF figure, wheel hub bearing failure for your reference: 1, the improper adjustment bearing roller large end due to the large pressure caused by excessive wear roller large end due to insufficient lubrication or pitting 2 caused by preloading is too large, eccentric bearing rollers due to improper installation of the uneven wear 3, penetrate hard pollutants caused by pollutants in raceway cast wear infiltration caused by wet sexual impurity in lubricating oil groove radial etching into hard pollutants in lubricating oil roller cast traces caused by wear and tear