Writer: Eric Bearing Limited
SKF bearings also have a leading position in the car's drive-by-wire technology.SKF collaborated with car manufacturers to develop the revolutionary Filo and Novanta concept cars,equipped with SKF's mechatronic steering and braking systems.Through further emphasis on wire control technology, SKF also manufactures an all-electric forklift, which is an electromechanical integrated device that fully replaces the traditional hydraulic control system.
SKF Bearings has unique expertise and technology in the development of wire-speed control technology, from aerospace to automobiles, and to applications in various industries.
SKF developed fly-by-wire technology, many years ago,SKF Bearings has started practical application,is so well-known companies work closely with the aviation industry partners.For example, most Airbus passenger aircraft are equipped with a SKF wire control system designed for cockpit flight control.
SKF Bearings provides equipment efficiency optimization services. In order to optimize equipment efficiency and increase productivity, more and more industrial enterprises have adopted a contract form that guarantees that they reach a common set goal,and entrusts SKF to subcontract the maintenance of some or all of their equipment.
SKF reliable line system has professional technical personnel and long-term accumulated experience. SKF bearing brand companies can provide bearing users with comprehensive equipment to enhance efficiency service work, including: bearing maintenance strategy, engineering technology support services,and the promotion of reliable operation personnel Maintenance work and equipment maintenance plans, etc.
Relevant knowledge of SKF bearing accuracy error
In the production of large quantities of SKF bearings, the adjustment process system such as template, sample, block and master is generally used; in single-piece small batch production, the adjustment is usually made by using the scale on the machine tool or the gauge block. The content of the adjustment work also varies according to the complexity of the workpiece. For simple surfaces (such as inner and outer cylindrical surfaces), generally only the positional relationship of each forming movement is adjusted; for complex surfaces (such as spiral surfaces, involute surfaces), then Also adjust the speed relationship of the forming movement.Therefore, the adjustment of SKF bearing errors is caused by a variety of factors.
The measurement error of SKF bearings should be less than 10% of the tolerance.The general measurement error is 10% to 33% of the difference in power, and as the tolerance level increases, the larger the proportion of errors, that is, the smaller the tolerance, the higher the proportion of errors.The measurement error does not mean that the inspection tolerance can be relaxed by 10%, but a certain safety margin should be given to ensure that the user passes the standard acceptance. SKF 6219-2Z ball bearings in our stock , if you need , pls click here :
In each process of SKF bearing parts processing, in order to obtain the size, shape and position accuracy of the bearing processing surface, the machine tool, fixture and tool must always be adjusted. Any adjustment work will inevitably bring certain errors.The production batch and machining accuracy of bearing parts in mechanical processing are often different, and the adjustment methods used are also different.
Testing requirements for SKF bearings
1.Use high-precision SKF bearings;
2.Add more analysis to the internal clearance of SKF bearings and consider the reduction of internal clearance of SKF bearings due to temperature rise;
3.Analyze the lubrication method. It adopts lubrication methods such as circulating lubrication, jet lubrication, oil mist lubrication and oil-air lubrication suitable for high-speed rotation.
4.Analyze the material type of the cage. For high-speed rotation, it is suitable to use copper alloy or phenolic resin to cut the cage. There are also synthetic resin molded cages suitable for high-speed rotation;
For small machinery, you can rotate it by hand to confirm whether it rotates smoothly.Inspection items include:
1.Whether there is any unsmooth operation caused by foreign objects, scratches, or pressure marks;
2.Whether there is unstable torque due to poor installation and poor processing of the mounting base;
3.Whether there is excessive torque due to too small clearance, installation error, sealing friction, etc.
If there is no abnormal phenomenon above, you can start the power operation check:
However,it is not possible to rotate manually for large machines.Therefore, the power is cut off immediately after the no-load start, the machine is idling, check for vibration, noise, whether the rotating parts are in contact, etc., and confirm that there is no abnormality, then enter the power operation.
The power operation starts from the no-load low speed and gradually increases to the rated operation under the specified conditions. The inspection items during the trial operation are: whether there is abnormal sound, SKF bearing temperature changes,lubricant leakage or discoloration, etc.If abnormality is found,the operation should be stopped immediately, the machine should be inspected, and if necessary, the SKF bearing should be removed for inspection.
SKF bearing temperature check.It can usually be estimated based on the external temperature of the bearing housing.However, it is more accurate to use the oil hole to directly measure the temperature of the outer ring of the SKF bearing.The temperature of SKF bearings gradually increases from the beginning of operation, and the temperature is usually stable after 1 to 2 hours.
If the SKF bearing is not installed properly, the temperature will rise sharply and abnormally high temperature will appear. The reasons are too much lubricant, SKF bearing clearance is too small, poor installation, excessive friction of the sealing device, etc. In the case of high-speed rotation, the selection of SKF bearing structure and lubrication method is also the reason.
SKF bearing sound inspection.The rotating sound is checked with a stethoscope, etc.If there is strong metal noise,abnormal sound, irregular sound, etc., it is abnormal.The causes of noise include poor lubrication, poor accuracy of the shaft or SKF bearing housing, bearing damage, and foreign matter intrusion.