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What are the viscosity grades of gear oil?

1 Answers

MilaLee

08/29/25 7:20am

Gear oil viscosity grades include: 150 gear oil, 220 gear oil, 320 gear oil, 460 gear oil, 680 gear oil, and 1000 gear oil. Additional information: 1. Pitting on tooth surfaces: When transmitting power, gears develop tiny fatigue cracks that eventually cause small pieces of metal to flake off under pressure, forming small pits known as pitting. 2. Tooth surface wear: During meshing, sliding occurs between the two tooth surfaces, leading to wear. 3. Tooth surface scuffing: In heavy-duty transmissions, direct contact between the two tooth surfaces can cause welding phenomena. 4. Tooth breakage: Under continuous load, fatigue cracks develop at the root of the tooth, eventually leading to breakage. 5. Plastic deformation of tooth surfaces: If the tooth surface material is relatively soft, it may undergo plastic deformation under load.

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