Precautions bearing follows.
Even to keep their surroundings clean bearings are tiny invisible dust will bring adverse effects to the bearing . Therefore, to keep the surrounding clean so that dust does not enter the bearings.
Use caution .
Bearing in use to a strong impact , will produce scar or indentation induced accidents. Severe, can cause cracks , breaks, must be noted.
Use bearing special tools.
You must use a special tool , not free to substitute .
Avoid bearing rust.
When operating bearings, hand sweat can cause rust. To note with clean hands operation , try to wear gloves , attention corrosive gases.
2 Install the bearing is installed correctly , use a direct impact on the accuracy of the bearing life and performance. Therefore, the design and installation of the bearing assembly department to fully study , in accordance with the operating standards . Operating standards projects typically as follows:
Cleaning the size and precision bearings and related parts inspection related parts to be checked after installing the bearing lubricant filled with hope at the time of installation to install , and then open the bearing package . When general grease lubrication , without cleaning bearings, direct filling grease. When the lubricating oil generally do not clean , but the equipment used with the bearings or high speed , use of clean oil cleaned to remove coating on the bearing rust . Remove the bearings rust inhibitor , rust, so we can not be left unattended .
Furthermore , grease sealed bearings have not cleaned directly.
Installation way bearing , because the bearing structure, with the condition varies, due to the general multi- axis rotation, so the inner need interference fit. Cylindrical bore bearings , multi-purpose press push , or thermal loading methods. Cone occasions , fixed directly on the tapered shaft , or use an adapter sleeve .
When installing the bearing, multi- clearance fit , interference when the outer ring is usually pushed by the press , or shrink after cooling installation method . With dry ice as coolant , shrink applications installed in the air will condense on the water surface of the bearing . So antirust measures need to be taken .
3 Check the operation after the end of the bearing installation , in order to check for proper installation , operation should be checked . Small machines can be rotated by hand to verify rotate smoothly. Check the items are dysfunctional because nick, indentation caused due to poor installation , poor mount the torque generated by the processing of instability , torque due to the clearance is too small, the installation error, seal friction caused by too large and so on. If no abnormal power operation can begin .
Large machinery can not be rotated manually , so the load starts immediately after the power cut , machinery idling , check for vibration , noise, if there is contact with rotating parts , etc., confirming that no abnormalities after entering power operation .
Power operation , from the low -load starts to slowly improve the conditions set forth in rated operation . Commissioning items to check whether there is abnormal sound, the bearing temperature, so leakage of the lubricant or discoloration . If abnormal , should be immediately discontinued operation , inspection machinery, if necessary, to remove the bearing inspection.
Bearing temperature , and can speculate based on external temperature of the bearing seat . But the use of direct measurement of the bearing outer ring hole temperature is more accurate. Bearing temperature gradually increased from the start of the operation , the temperature is usually 1 to 2 hours after steady . If the bearing mounting bad , the temperature will soar, abnormal high temperature . Reasons such as too much lubricant , bearing clearance is too small , poor installation, seal friction and too big. High-speed rotation of the occasion, bearing structure , lubrication and so is the choice of the wrong reasons .
Turn the sound of bearings with a stethoscope and other tests , there is a strong metal noise , abnormal sound , sound, etc. Exceptions irregular . The reasons are poor lubrication , shaft or bearing poor precision , bearing damage , foreign invasion and so on.
4 . Demolished regular maintenance , replacement bearings need to be demolished . After the demolition, such as when you want to continue to use or need to check to investigate the demolition and installation to the same caution. Careful not to damage the bearings and parts, especially the demolition interference fit bearings , the operation is difficult, so the design stage should be considered in advance to facilitate the demolition. Designed as required removal tool is also very important. When dismantling, demolition methods based on drawings study , sequential, with the condition survey of the bearing, so that the demolition job smoothly
Even to keep their surroundings clean bearings are tiny invisible dust will bring adverse effects to the bearing . Therefore, to keep the surrounding clean so that dust does not enter the bearings.
Use caution .
Bearing in use to a strong impact , will produce scar or indentation induced accidents. Severe, can cause cracks , breaks, must be noted.
Use bearing special tools.
You must use a special tool , not free to substitute .
Avoid bearing rust.
When operating bearings, hand sweat can cause rust. To note with clean hands operation , try to wear gloves , attention corrosive gases.
2 Install the bearing is installed correctly , use a direct impact on the accuracy of the bearing life and performance. Therefore, the design and installation of the bearing assembly department to fully study , in accordance with the operating standards . Operating standards projects typically as follows:
Cleaning the size and precision bearings and related parts inspection related parts to be checked after installing the bearing lubricant filled with hope at the time of installation to install , and then open the bearing package . When general grease lubrication , without cleaning bearings, direct filling grease. When the lubricating oil generally do not clean , but the equipment used with the bearings or high speed , use of clean oil cleaned to remove coating on the bearing rust . Remove the bearings rust inhibitor , rust, so we can not be left unattended .
Furthermore , grease sealed bearings have not cleaned directly.
Installation way bearing , because the bearing structure, with the condition varies, due to the general multi- axis rotation, so the inner need interference fit. Cylindrical bore bearings , multi-purpose press push , or thermal loading methods. Cone occasions , fixed directly on the tapered shaft , or use an adapter sleeve .
When installing the bearing, multi- clearance fit , interference when the outer ring is usually pushed by the press , or shrink after cooling installation method . With dry ice as coolant , shrink applications installed in the air will condense on the water surface of the bearing . So antirust measures need to be taken .
3 Check the operation after the end of the bearing installation , in order to check for proper installation , operation should be checked . Small machines can be rotated by hand to verify rotate smoothly. Check the items are dysfunctional because nick, indentation caused due to poor installation , poor mount the torque generated by the processing of instability , torque due to the clearance is too small, the installation error, seal friction caused by too large and so on. If no abnormal power operation can begin .
Large machinery can not be rotated manually , so the load starts immediately after the power cut , machinery idling , check for vibration , noise, if there is contact with rotating parts , etc., confirming that no abnormalities after entering power operation .
Power operation , from the low -load starts to slowly improve the conditions set forth in rated operation . Commissioning items to check whether there is abnormal sound, the bearing temperature, so leakage of the lubricant or discoloration . If abnormal , should be immediately discontinued operation , inspection machinery, if necessary, to remove the bearing inspection.
Bearing temperature , and can speculate based on external temperature of the bearing seat . But the use of direct measurement of the bearing outer ring hole temperature is more accurate. Bearing temperature gradually increased from the start of the operation , the temperature is usually 1 to 2 hours after steady . If the bearing mounting bad , the temperature will soar, abnormal high temperature . Reasons such as too much lubricant , bearing clearance is too small , poor installation, seal friction and too big. High-speed rotation of the occasion, bearing structure , lubrication and so is the choice of the wrong reasons .
Turn the sound of bearings with a stethoscope and other tests , there is a strong metal noise , abnormal sound , sound, etc. Exceptions irregular . The reasons are poor lubrication , shaft or bearing poor precision , bearing damage , foreign invasion and so on.
4 . Demolished regular maintenance , replacement bearings need to be demolished . After the demolition, such as when you want to continue to use or need to check to investigate the demolition and installation to the same caution. Careful not to damage the bearings and parts, especially the demolition interference fit bearings , the operation is difficult, so the design stage should be considered in advance to facilitate the demolition. Designed as required removal tool is also very important. When dismantling, demolition methods based on drawings study , sequential, with the condition survey of the bearing, so that the demolition job smoothly
