In recent years, as more companies have engaged with the international market, numerous foreign machinery brands have entered the domestic scene. Machinery such as construction equipment, production tools, pharmaceutical machines, food processing equipment, machine tools, and more have become widely used. These imported machines are often produced and assembled abroad, and their components—especially bearings—are typically sourced directly from overseas manufacturers. This not only cuts down on distribution costs but also minimizes the risk of counterfeit parts. However, after prolonged use, these machines often require repairs or part replacements. Many companies then turn to local suppliers for bearings, which can lead to an increased risk of purchasing fake products. Distinguishing genuine from counterfeit bearings is a complex task that requires both technical knowledge and understanding of the manufacturer. Beijing Yakang Import Bearing Company offers detailed guidance on how to identify authentic bearings through visual inspection.
Most counterfeit bearings aim to imitate well-known international brands like SKF (Sweden), FAG (Germany), INA (Germany), TIMKEN (USA), NSK (Japan), NTN (Japan), KOYO (Japan), IKO (Japan), and NACHI (Japan). To determine authenticity, one should examine the packaging, the bearing's appearance, and its rotation. The outer packaging is often the first clue. For example, SKF large bearings are usually packed in wooden boxes, while self-aligning roller bearings may come in wooden or blue plastic containers.
Original SKF packaging features fumigation marks, recyclable symbols, and stacking instructions, all hot-stamped using professional equipment. Counterfeit versions often lack these details due to inferior manufacturing. The original wooden boxes are made from 0.3mm thick tinplate, with clean edges and no burrs. They are stamped with the manufacturer’s name. In contrast, fake boxes may have rough edges, sharp corners, and no visible stamping. The labels on the box are also important—original labels are smooth, evenly printed, and firmly attached. Counterfeit labels may look uneven, have irregular thickness, or peel off easily.
The ink used in original packaging is sprayed overseas and does not fade. The font appears bright due to a protective film, and the label adheres tightly without peeling. Domestic counterfeits, however, often use low-quality materials, leading to issues like brittleness, easy tearing, and poor fit. The inner packaging is also telling. Original SKF boxes feature neatly sealed bags without folds or wrinkles, while counterfeit ones may be hand-sealed with inconsistent edges.
Looking at the bearing itself can also reveal authenticity. For example, genuine NSK deep groove ball bearings have smooth, uniform chamfers and retainers. Counterfeit versions often have rough edges and may use R-shaped chamfers. High-quality imitations might be hard to spot, but lower-grade copies are easier to detect. Similarly, cylindrical or spherical roller bearings from NSK have precise machining, while fakes tend to have common, unrefined finishes.
Another way to check is by examining the outer ring after disassembly. Genuine bearings are made from high-purity steel and appear bright after grinding. Counterfeit ones often look dull and dark. These differences are not related to usage but rather the quality of the material.
Beijing Yakang Import Bearing Company also provides information on verifying authenticity through barcodes. If you're looking for more detailed methods on checking packaging, appearance, or other aspects, feel free to reach out for expert advice.
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