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General Design Principles of Plastic Gears Plastic gears are essential transmission components manufactured from engineering plastics, engineered to excel in applications demanding light load bearing, low noise operation, corrosion resistance and high self-lubrication performance. Compared with ... Read More
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Gear NVH Control Technology: Industry Knowledge of Reducing Gear Noise 1. The Essence and Sources of Gear Noise Gear noise, the core issue of NVH (Noise, Vibration, and Harshness) in transmission systems, is essentially the sound radiation generated by structural resonance. Periodic excitation ... Read More
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The Intimate Correlation Between Gear Heat Treatment Quality and Tooth Fracture Failure Gears serve as the core mechanical components for power and motion transmission, and their service life and reliability directly determine the performance of the entire transmission system. Statistics show that ... Read More
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A Comprehensive Review of Gear Failure Modes (28 Types in 6 Categories) Gears are core transmission components in mechanical systems, widely applied in aerospace, automotive, wind power, and heavy machinery industries. Their failure will lead to equipment downtime, efficiency reduction, and even ... Read More
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Why Non-Drive End Bearings of Traction Motors Fail "Silently" In the drive system of rail transit trains, traction motor bearings are divided into two key parts: the Drive End (DE) bearing and the Non-Drive End (NDE) bearing. Intuitively, the NDE bearing is far from the gear meshing area and bears ... Read More
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In an ideal scenario, a pair of absolutely rigid and perfectly aligned gears meshing under no load will form a clear, straight line of contact running across the tooth surface, which we refer to as the theoretical contact line. However, in the practical engineering world, gears are elastic, subject ... Read More
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Core Industry Knowledge of Railway Bearing Sealing Systems: Sealing as the First Line of Defense for Bearing Life In the operation and maintenance system of railway equipment, bearings are the key support for core components such as bogies and traction motors. Bearing failure is often attributed to ... Read More
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The Decisive Role of Gear Modification and Precision in Low-Speed Heavy-Duty Gearboxes Low-speed heavy-duty gearboxes serve as the "heart" of core industrial equipment such as mine ball mills, port cranes, large extruders and main wind power transmission systems. Operating under extreme conditions ... Read More
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The Core Concept: Boundary Effects Determine Precision Limits In gear hobbing, while stable cutting parameters are crucial, the ultimate precision of a gear is often limited by the dynamic events at the very beginning and end of the process. Errors introduced during these phases are not corrected ... Read More
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Gear Pressure Angle: Core Knowledge and Industrial Application Norms As the core geometric parameter determining the transmission performance of gear drive systems, the pressure angle is not a fixed value of 20 degrees in engineering practice. Although the 20-degree pressure angle has become the ... Read More
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