The Intimate Correlation Between Gear Heat Treatment Quality and Tooth Fracture FailureGears 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 ap

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 cata

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 lo

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