Posted on April 2, 2019 at 9:00 PM
The impact of the external environment on FAG bearings includes the following two aspects: 1. Temperature: The influence of temperature on FAG bearings. The use of high temperature often indicates that the bearing is in an abnormal condition. High temperatures are also harmful to the lubricant of fag bearings. Sometimes fag bearing overheating can be attributed to the lubricant of the fag bearing. Long-term continuous rotation of the bearing at temperatures above 125 °C will reduce bearing life. Causes of high temperature bearings include: insufficient lubrication or excessive lubrication, lubricants. Containing impurities, excessive load, fag bearing damage ring, insufficient clearance, and high friction caused by oil seal. 2, vibration: vibration damage to FAG bearings can be said to be quite sensitive, peeling, indentation, corrosion, cracks, wear, etc. will be reflected in the fag bearing vibration measurement. Therefore, the magnitude of the vibration can be measured by using a special bearing vibration measuring device (frequency analyzer, etc.), and the specific situation of the abnormality cannot be inferred by the frequency division. The measured values vary depending on the conditions of use of the bearing or the mounting position of the sensor. Therefore, it is necessary to analyze and compare the measured values of each machine in advance to determine the judgment standard. The size and accuracy are selected according to the part to be used, the conditions of use, and environmental conditions. 1. Location: Tapered roller bearings are suitable for bearing radial and axial combined loads with radial loads. They are usually paired with two sets of bearings, mainly for the front and rear hubs of the car, the active bevel gears, and the differential speed. Transmission parts such as reducer and reducer. 2. Permissible speed: In the environment with correct installation and good lubrication, it is allowed to be 0.3-0.5 times of the limit speed of the bearing. Under normal circumstances, it is better to use 0.2 times the limit speed. 3. Allowable tilt angle: Tapered roller bearings generally do not allow the shaft to be inclined with respect to the housing hole. If it is inclined, it should not exceed 2'. 4, allowable temperature: Under normal load, and the lubricant has high temperature resistance, and the lubrication is sufficient, the general fag bearing is allowed to work at an ambient temperature of -30 °C - 150 °C.