The key Method of Maintaining low Noise Inlaid Solid lubricated Bearing
The key Method of Maintaining low Noise Inlaid Solid lubricated Bearing
2022年4月6日
Method for reducing noise of IKO clutch bearing in high speed operation
Method for reducing noise of IKO clutch bearing in high speed operation
2022年4月6日

How to Reasonably Solve the Problem of limit Operating load of Thin-walled Cross Roller Bearing

  • For the measurement of the coaxiality of the main bearing hole of the engine block, the coaxiality dimension of the diesel engine block must be measured accurately, and the runout of the crankshaft must be measured at the same time, so as to select the thickness of the bearing bush to make the oil lubrication clearance consistent in each shaft position. 
  • If the diesel engine is over rolled and runs fast, the coaxiality of the main IKO bearing hole of the engine body must be tested before assembly. How to Reasonably Solve the Problem of limit Operating load of Thin-walled Cross Roller Bearing
  • The total length of the nodular iron crankshaft is no more than 0.14mm and the total length of the steel crankshaft is no more than 0.12mm. At the same time, there are requirements for the roundness and cylindricity of the bearing hole of the engine body. If it exceeds the limit, it is forbidden.
  • If it is within the limit, the grinding method (i.e. apply an appropriate amount of red lead powder on the bearing bush, install it into the crankshaft and rotate it, then remove the rod end joint bearing cover to check the bearing bush. After scraping the protruding parts with hard points, measure the change of size, so as to ensure the reliability of use.How to Reasonably Solve the Problem of limit Operating load of Thin-walled Cross Roller Bearing

How to Reasonably Solve the Problem of limit Operating load of Thin-walled Cross Roller Bearing

  • Use position: in order to check whether the installation is correct, operation inspection shall be carried out. Small machinery can be rotated by hand to confirm whether it rotates smoothly.
  •  The inspection items include poor operation caused by foreign matters, scars and indentation, unstable torque caused by poor installation and poor processing of mounting base, excessive torque caused by too small clearance, installation error and sealing friction, etc. If there is no abnormality, the power operation can be started.How to Reasonably Solve the Problem of limit Operating load of Thin-walled Cross Roller Bearing
  • IKO bearing is suitable for bearing the combined radial and axial load dominated by radial load. It is usually used in pairs with two sets of bearings. It is mainly used in the transmission parts of automobile, such as front and rear hubs, driving bevel gears, differential, reducer and so on.How to Reasonably Solve the Problem of limit Operating load of Thin-walled Cross Roller Bearing
  • Allowable speed: under the condition of correct installation and good lubrication, the allowable speed is 0.3-0.5 times of the limit speed of rod end joint bearing. Under normal conditions, it is appropriate to use 0.2 times of the limit speed.How to Reasonably Solve the Problem of limit Operating load of Thin-walled Cross Roller Bearing
  • Allowable tilt angle: IKO bearings generally do not allow the shaft to tilt relative to the shell hole. If there is any tilt, the greater is no more than 2 ‘.How to Reasonably Solve the Problem of limit Operating load of Thin-walled Cross Roller Bearing
  •  Allowable temperature: under the condition of bearing normal load, high temperature resistance of lubricant and sufficient lubrication, the general bearing is allowed to work at the ambient temperature of – 30 ℃ – 150 ℃.How to Reasonably Solve the Problem of limit Operating load of Thin-walled Cross Roller Bearing
  • When IKO bearing is to be used after being removed, appropriate disassembly tools shall be selected. When disassembling the ferrule with interference fit, only the tension can be added to the ferrule, and it is not allowed to transfer the disassembly force through the rolling element, otherwise the rolling element and raceway will be crushed. 
  • Lubricants are important not only for bearings, but also for all rod end plain bearings. However, please note that the bearing should not add too much grease.How to Reasonably Solve the Problem of limit Operating load of Thin-walled Cross Roller Bearing
  •  Then it’s time to change the lubricant of the bearing. After draining the old engine oil, if possible, the bearings lubricated with engine oil should be filled with fresh engine oil and let the machine rotate at low speed for a few minutes. Make the oil collect residual pollutants as much as possible, and then drain the oil.
  •  When replacing the grease of the bearing lubricated with grease, the Joe remover used should avoid the contact of cotton with any part of the rod end joint bearing. Because these residual fibers may wedge between rolling parts and cause damage, especially in the application of IKO bearing.How to Reasonably Solve the Problem of limit Operating load of Thin-walled Cross Roller Bearing
  • Some matters needing attention in the installation of thin-walled cross roller bearing, such as the perpendicularity of shaft ring and shaft centerline, the accuracy of bearing device or the condition after reverse installation, etc. the following is the introduction of skills and methods.How to Reasonably Solve the Problem of limit Operating load of Thin-walled Cross Roller Bearing
  • The joint venture between thin-walled cross roller bearing and shaft is generally transition joint venture, and the joint venture between race and bearing seat hole is generally clearance joint venture. The middle shaft ring of the two-way bearing shall be fixed on the shaft to avoid the migration and transformation of the shaft. The installation method of bearing is mostly the change of shaft under common conditions. 
How to Reasonably Solve the Problem of limit Operating load of Thin-walled Cross Roller Bearing
  • Therefore, the joint venture between inner ring and shaft is win-win joint venture, and the joint venture between bearing outer ring and bearing chamber is clearance joint venture.How to Reasonably Solve the Problem of limit Operating load of Thin-walled Cross Roller Bearing
  • Standard class (g) tolerance bearing;How to Reasonably Solve the Problem of limit Operating load of Thin-walled Cross Roller Bearing
  •  Radial bearing only bears radial load and thrust bearing only bears axial load;
  • How to Reasonably Solve the Problem of limit Operating load of Thin-walled Cross Roller Bearing
  • Rigid bearing pedestal and shaft;How to Reasonably Solve the Problem of limit Operating load of Thin-walled Cross Roller Bearing
  •  The lubrication and cooling conditions are normal.
  • When the thin-walled cross roller bearing operates under the load of 0.1C, the contact stress between the rolling element and the contact surface of the raceway increases, resulting in the increase of the working temperature of the bearing and the relative deterioration of the performance of the lubricant. Therefore, the limit speed of the bearing will be reduced accordingly.
  • For the range of C / = 10, the reduction of limit speed is very small, so it can be ignored, that is, F1 = 1.
  • For the centripetal bearing under combined load, due to the increase of the number of rolling elements under load, the increase of friction resistance, the increase of calorific value, the deterioration of lubrication and cooling conditions, and the increase of force acting on the cage, the limit speed of thin-walled cross roller bearing must be adjusted by multiplying a reduction factor F2 according to the bearing type and load angle.
How to Reasonably Solve the Problem of limit Operating load of Thin-walled Cross Roller Bearing