Agma 218.01 Online

AGMA 218.01 was a pioneering standard that transformed gear noise troubleshooting from an art into a repeatable engineering inspection. Its direct linkage between static tooth contact patterns and dynamic noise performance provided the foundation for all subsequent gear quality systems. While superseded by quantitative, three-dimensional measurement standards, its principles remain essential for rapid diagnostics, gearbox assembly validation, and teaching fundamental gear meshing behavior.

| Pattern Characteristic | Predicted Noise Level | |------------------------|------------------------| | Centered, full face width, 40–60% of tooth height | Low | | Slight diagonal (≤ 10°), moderate end clearance | Moderate | | Tip contact, heavy diagonal, or narrow width | High | | Interrupted (two separate patches) | Very high (gear likely rejected) | agma 218.01