轴承在安装中操作不当经常会造成轴承提前损坏或使用中早期失效，大大提高轴

Improper operation of bearings during installation will often cause early damage to the bearings or early failure during use, greatly increasing bearing costs. <br><br>The common installation method is wrong: <br><br>1. Running inner ring: the shaft and the bearing inner hole are too loose (commonly known as "running inner ring") <br><br>phenomenon: the shaft and the inner hole are too loosely matched, causing slippage between the shaft and the inner hole surface. Sliding friction will cause heat generation, causing bearing damage due to heat generation. <br><br>Reason: Failure to select a suitable fit size or not to measure shaft diameter and bearing inner ring size data (machining error, etc.) during installation. <br><br>Hazard: <br>1) The friction between the end face of the inner ring and the shaft shoulder generates heat and cracks. When "running the inner ring", the sliding friction between the inner ring and the shaft will generate a high temperature. Since the contact surface between the end face of the inner ring and the shaft shoulder is small, the temperature will be higher. The end face of the inner ring will generate thermal cracks. The continuous extension of the thermal cracks will cause the inner ring of the bearing to break during use. <br><br>2) Adhesion occurs between the shaft and the inner hole surface after heating. Since the "running inner ring" causes sliding friction between the inner hole and the shaft surface, the high temperature caused melts the surface metal and causes adhesion. <br><br>2. Running outer ring: the housing bore and the bearing outer diameter are too loosely matched (commonly known as the "running outer ring") <br><br>phenomenon: the housing bore and the bearing outer diameter are too loosely matched, causing sliding between their surfaces. Sliding friction will cause heat generation, causing the bearing to heat up and be damaged. <br><br>Reason: The appropriate fitting size was not selected according to the requirements or the size data (processing error, etc.) of the housing aperture and bearing outer ring were not measured during installation. <br><br>Hazard: Sliding friction will cause heat generation, shorten bearing life, and cause bearing heat generation and damage. <br><br>Bearing incorrect installation method: <br><br>1) hammer, flat shovel, etc. directly hit the bearing to <br><br>install the inner ring (or outer ring) interference fit bearing, it is forbidden to directly hit the end surface of the bearing inner ring (or outer ring) with a hammer, this is very It is easy to knock out the ribs. The sleeve should be placed on the end face of the inner ring (or outer ring), and be hammered with a hammer to install. <br><br>2) <br><br>How to extend the service life of the bearing if the heating temperature is too high ? <br><br>1. Choose the right fit size.<br><br>2. The data must be measured during assembly. <br><br>3. Bearing heating cannot be over temperature. <br><br>4. Clean the assembly and prohibit the entry of debris. <br><br>5. Use special tools. Bearing heaters, sleeves, etc. <br><br>6. Apply lubricant.

Improper operation of bearings during installation often results in early damage to bearings or early failure in use, greatly increasing bearing costs.<br><br>Common installation methods are wrong:<br><br>1, running inner ring: shaft and bearing inner hole with over-loose (commonly known as "run inner ring")<br><br>Phenomenon: The shaft is too loose to fit with the inner hole, causing the shaft to slide between the inner hole surface. Sliding friction will cause heat, causing damage to the bearings due to heat.<br><br>Cause: The appropriate mate size is not selected as required or the shaft diameter and bearing inner ring dimension data (processing error, etc.) are not measured during installation.<br><br>Harm:<br>1) Cracks are created by the inner ring end surface and the friction heating of the shaft shoulder. When "running inner ring", the sliding friction between the inner ring and the shaft will produce a high temperature, which will be higher due to the small contact surface between the inner ring end and the shaft shoulder. The internal ring of the bearing will break in use by producing a hot crack on the end surface of the inner ring and the continuous extension of the hot crack.<br><br>2) Adhesion occurs when the shaft is heated with the surface of the inner hole. Because the "run inner ring" causes sliding friction between the inner hole and the shaft surface, the resulting high temperature melts the surface metal and causes adhesion.<br><br>2, run outer ring: shell aperture and bearing outer diameter with over-loose (commonly known as "running outer ring")<br><br>Phenomenon: The aperture of the housing is too loose with the bearing outer diameter, causing sliding between their surfaces. Sliding friction will cause heat, causing the bearing to heat up and damage.<br><br>Cause: The appropriate fit size is not selected as required or the shell aperture and bearing outer ring dimension data (processing error, etc.) are not measured during installation.<br><br>Hazard: Sliding friction will cause heat, shorten the life of the bearing, so that the bearing heat and damage.<br><br>Bearing incorrect installation method:<br><br>1) Hammers, flat shovels, etc. hitting bearings directly<br><br>Installing bearings with an over-fit inner ring (or outer ring) and prohibiting the direct hitting of the end face of the bearing inner ring (or outer ring) with a hammer, making it easy to knock the retaining edge out. The sleeve should be placed on the end face of the inner ring (or outer ring) and installed with a hammer to tap the sleeve.<br><br>2) The heating temperature is too high<br><br>How can I extend the life of a bearing?<br><br>1, choose the appropriate fit size.<br><br>2, assembly must be measured data.<br><br>3, bearing heating can not be over-temperature.<br><br>4, clean assembly, prohibit debris into the roll.<br><br>5, the use of special tools. Bearing heaters, sleeves, etc.<br><br>6, coating lubricants. ...

Improper operation of bearings in installation will often lead to early damage of bearings or early failure in use, which greatly increases the cost of bearings.<br>Common installation methods are wrong:<br>1. Running inner ring: the shaft and bearing inner hole are too loose (commonly known as "running inner ring")<br>Phenomenon: the fit between the shaft and the inner hole is too loose, causing the sliding between the shaft and the inner hole surface. Sliding friction will cause heating and damage the bearing due to heating.<br>Cause: the proper fit size is not selected as required or the shaft diameter and bearing inner ring size data (processing error, etc.) are not measured during installation.<br>harm:<br>1) The inner ring end face and the shaft shoulder are heated by friction and produce cracks. When "running the inner race", the sliding friction between the inner race and the shaft will produce high temperature. Because the contact surface between the end face of the inner race and the shoulder is very small, the temperature will be higher. The inner ring of the bearing will be broken in use due to the continuous extension of the hot crack.<br>2) There is adhesion between the shaft and the inner hole surface after heating. Because the "running inner ring" causes the sliding friction between the inner hole and the shaft surface, the high temperature causes the surface metal to melt and produce adhesion.<br>2. Running outer ring: the housing bore diameter and bearing outer diameter are too loose (commonly known as "running outer ring")<br>Phenomenon: the matching between the shell bore and the bearing outer diameter is too loose, which causes the sliding between their surfaces. Sliding friction will cause heating and damage the bearing.<br>Cause: the proper fit size is not selected as required or the shell bore diameter and bearing outer ring size data (processing error, etc.) are not measured during installation.<br>Hazard: the sliding friction will cause heating, shorten the bearing life and damage the bearing due to heating.<br>Wrong installation method of bearing:<br>1) Hammers, flat shovels, etc. directly knock on bearings<br>When installing the bearing with the interference fit of the inner ring (or outer ring), it is forbidden to directly knock the end face of the inner ring (or outer ring) of the bearing with a hammer, so as to damage the flange easily. The sleeve shall be placed on the end face of the inner (or outer) ring and installed by striking the sleeve with a hammer.<br>2) Heating temperature too high<br>How to extend the service life of bearings?<br>1. Choose the right fit size.<br>2. Always measure the data when assembling.<br>3. Bearing heating shall not be over temperature.<br>4. Clean the assembly and prevent sundries from rolling into.<br>5. Use special tools. Bearing heater, sleeve, etc.<br>6. Apply lubricating oil.<br>