Wedoany.com Report on Mar 9th, In the field of industrial procurement, to balance cost and quality, some users opt for second-hand or disassembled imported bearings. However, the market is flooded with refurbished and counterfeit products, which can easily lead to procurement risks. To address this, the industry has promoted a sensory-based three-color identification method to help users quickly assess bearing conditions.

The red zone represents high risk, and it is recommended to reject the bearing outright. This includes bearings with sticky oil stains, rust spots, or scratches on the surface; when manually rotated, they exhibit stuttering, wobbling, or abnormal noises; chamfers are rough, asymmetrical, or show signs of grinding. These signs may indicate a disassembled and refurbished bearing.

The yellow zone indicates suspicion, requiring further verification. For example, packaging appears old, labels or fonts have subtle differences from official samples; although steel stamps are legible, the impressions are faint, edges are blurred, lacking the clarity of original factory markings.

The green zone is generally reliable and can be preliminarily accepted. The bearing has a clean appearance, uniform chamfers, and no abnormal wear; rotation is smooth and quiet, without noise or resistance; and it emits a faint smell of original factory anti-rust oil, which is a common characteristic of genuine imported bearings.

This three-color identification method is suitable for second-hand equipment purchasers, maintenance shop material managers, and end-users who prioritize reliability. It aims to help them ensure bearing quality in a complex market and avoid sacrificing performance for low prices.