Through analysis and debate, it is possible to control these bearings to determine the technical policies and quality indicators of the main engine, and to improve them through technical means. For example, it is often necessary to know the specific value of the rotational accuracy of a bearing when evaluating whether the rotational accuracy of an imaginary host machine can achieve a specific goal. In assembly processes, it is often necessary to know the shaft and seat hole of the bearing and the shaft on the assembly surface. For the deviation of the sum of the linear deviations, the response is installed in a reverse direction, enabling the errors to cancel each other out, resulting in higher spindle change accuracy; In addition, for example, in the assembly workshop, it is often necessary to measure the specific dimensions of the INA bearing assembly surface and match them with the actual dimensions of the host journal and seat hole, so that the INA bearings of the same batch of hosts can first be more evenly matched without being too loose or tight, preventing the deformation of the raceway or crawling of the mating surface, which is detrimental to ensuring the rotational accuracy and service life of the spindle.

Quality inspection and product knowledge are necessary for the majority of users of bearings. For example, the material supply and quality control departments must test whether the purchased product bearings are qualified. When the quality of equipment bearings in the Equipment Maintenance Department occurs, problems with components often occur through bearing inspection, The manufacturer of split bearing pedestals determines whether the cause of the problem is due to bearing handling practices or improper technical departments. It is often necessary to determine the specific values of various technical guidelines and quality indicators for bearings. Bearing distributors are increasingly entering the bearing industry, widely operating in engineering machinery, machine tools, automobiles, metallurgy, mining, kerosene, machinery, electric power, railways, and other industries. Based on sustained exploration and practice in the bearing industry, it has resulted in a long-term strategy of being a sole partner for a large enterprise to operate its equipment without worry. The bearing rollers are symmetrical and the inner ring has no ribs. Each row of rollers has a stamped steel plate through connection frame. The retaining ring in the behavior is guided by the inner ring.

In summary, users must have the following knowledge:

What are the standards for inspecting the commodities included in the international nuclear programme;

2. Which items of bearings should be inspected and why should these items be verified;

3. What preparations need to be done before the quality inspection of bearing products, and why these preparations need to be done;

4. The inspection conditions, methods, instruments, etc. of the inspection product, and the limits within which the inspection results must be limited;

"Bearing products are sometimes too large to undergo 100% inspection. Therefore, what sampling plan should be adopted and how many quantities should be selected for inspection to more comprehensively and reliably reflect the quality of all commercial INA bearings, and what criteria should be used to measure the inspection results to determine whether the goods are in a qualified batch or whether unqualified batches should be rejected?"?

Bearing acceptance is generally divided into three categories, namely:

Routine inspection - General inspection of INA bearings upon arrival.

Routine inspections - dimensions, rotational accuracy, clearance bearings, and residual magnetic strength, related to assembly.

Special inspection - Check the vibration quality, noise quality, and other special requirements of the bearing.