1. Is the outer packaging clear: Under normal circumstances, the factory brand has its own presupposed presupposition for the external packaging, and the factory that has passed the production conditions is manufactured and manufactured, because the packaging is from the line to the line. The color blocks are very clear and unambiguous. Whether the steel printing is clear: brand words, labels, etc. will be printed on the NTN bearing body. The font is very small, but most of the products produced by the factory use the stamping technology, and the typeface is applied before the heat treatment, because the font is small, but the depth is very clear. The imitation of the fonts of the fake products is not only vague, because the printing technology is not delicate, the fonts float on the outside, and can be wiped off by hand even a little.
2. Is there any noise: hold the NTN bearing inner sleeve in the left hand, and turn the outer sleeve on the right to rotate it to hear if there is any noise. Because most of the counterfeit products are lagging behind, the absolute hand-operated operation is difficult to avoid impurities such as sand in the production process, which is hidden in the bearing body, so the noise will be emitted at the moment of rotation. This is the biggest difference between a factory brand that strictly enforces production standards and operates with machines.
Whether there is turbid oil on the outside: this should be added when purchasing NTN bearings. Because the anti-rust technology in China until now is not especially home, it is easy to leave a thick oil trace when applying anti-rust treatment to the bearing body. It is sticky and thick in the grip, and the bearing on the overseas original is almost I can't see the remnants of the anti-rust oil, but especially the careful expert said that the NTN bearing smells like a smell, it must be under the anti-rust oil, just can't see it. Whether the chamfer is average: the chamfer of the bearing, that is, the seam of the horizontal and vertical faces, the imitation of the impersonated bearing is unsatisfactory in the corners of these corners due to the limitation of production technology.
In order to maintain the original performance of the NTN bearing in a good condition for as long as possible, it is necessary to maintain, repair, and prevent accidents, ensure the reliability of operation, and improve productivity and economy. Maintenance is best carried out on a regular basis in accordance with the operating standards for the mechanical operating conditions. The content includes monitoring of operating conditions, replenishment or replacement of lubricants, and periodic disassembly inspections. As a maintenance item during operation, there are bearing rotation sound, vibration, temperature, lubricant state, and the like.
Cleaning of NTN Bearings: When disassembling the NTN bearing for inspection, first record the appearance of the bearing, confirm the residual amount of lubricant, and after sampling the lubricant for inspection, wash the bearing. As a cleaning agent, gasoline and kerosene are commonly used. The removed NTN bearings are cleaned and cleaned separately, placed in a container, and placed on a metal mesh bottom so that the NTN bearings do not directly touch the container. In rough cleaning, if the bearing is rotated with dirt, it will damage the rolling surface of the bearing and should be noted. In the rough cleaning oil, use a brush to remove the grease and the adhesive. After it is almost clean, it is transferred to the fine wash. Fine washing is to carefully clean the bearing while rotating it in the cleaning oil. In addition, the cleaning oil should always be kept clean.
For more information and purchase please visit: https://www.supplyforever.com
