YRT turntable bearing is widely used in precision rotary table and other precision mechanical devices, with high tilt stiffness and precision. But to ensure this high accuracy, we need to carry out various inspection work before leaving the factory. Here, TEDIN has sorted out the inspection process and precautions of YRT turntable bearing for your reference.
1. Inspection process of YRT turntable bearing
1. After cleaning and drying, the bearing parts shall be inspected for appearance. The surface parameters of each part shall meet the process requirements without obvious insertion error. Serious vibration marks and other surface defects are not allowed on the inner and outer diameters.
2. After the appearance inspection is qualified, the standard parts and YRT turntable bearing parts to be inspected shall be kept at a constant temperature for more than 4 hours, and then the inner diameter, outer diameter, and height dimensions shall be inspected, and the inspection record shall be filled in truthfully; the inner and outer raceways shall be sorted, and then the bearing shall be installed.
3. The retainer and roller shall be inspected and put into storage only after passing the inspection. All standards shall meet the process requirements, and the inspection record shall be filled in carefully.
4. Check the friction torque of the bearing. For the model above yrt325, the sampling inspection proportion should be increased (strictly control the axial clearance, visually observe whether the axial clearance is positive, and fill the fixed screws to check whether the friction torque is too large).
5. The accuracy of the mounting hole is checked with a special hole measuring die. The accuracy of the mounting hole is related to the actual use of the bearing and must be strictly controlled.
6. Check the accuracy of bearings, fill in the inspection records of YRT bearings, and number the qualified products.
2. Precautions for YRT turntable bearing inspection
1. Keep the surrounding environment clean (workbench, hands, grease, tools) during the test.
2. When detecting the inner and outer raceways, the proper roller size should be selected to detect the radial clearance. According to the test value, the inner, outer ring, or roller should be replaced to ensure that the radial clearance is within the range required by the product drawing.
3. Only after the radial clearance and axial clearance are qualified can the bearing be assembled.
4. The assembly workshop is responsible for the quality inspection of the retainer and roller.
5. If the finished bearing fails to pass the inspection, it shall be repaired according to the situation, or treated as a waste, defective or degraded product, and the unqualified items shall be marked.
6. When entering the final inspection, the standard parts shall be pressed in time, the identification shall be filled in, the model, quantity, and submission time of the submitted products shall be indicated, and the constant temperature time shall not be less than 2 hours.
7. During the bearing inspection before assembly, if the product quality is found to be unqualified, it shall be handed over to the final inspection personnel for re-inspection and treatment in time.
In fact, the inspection of YRT bearing is actually carried out together with the production and installation, and each step of installation and testing has strict requirements, and it is also related to the performance parameters of bearing products. So all manufacturers should pay attention to it. Luoyang Tedin Bearing Co., Ltd. is a professional manufacturer of high-precision YRT series turntable bearings. Through continuous improvement of production and testing technology, the indexes of various YRT turntable bearings produced by Luoyang Tedin Bearing Co., Ltd. have reached the level of famous brand similar products.
Please check the Product Guide to select suitable bearings for your machinery.
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