Gear Accuracy Grades and Standard Systems
2025-11-25
Gear accuracy is regulated by international standards (e.g., ISO 1328) and national standards (e.g., China’s GB/T 10095), with grades ranging from 3 to 12.
Gear accuracy is regulated by international standards (e.g., ISO 1328) and national standards (e.g., China’s GB/T 10095), with grades ranging from 3 to 12. Accuracy levels impact transmission efficiency, noise, and vibration. High-precision gears (grades 3-5) are used in aerospace and precision instruments, medium grades (6-8) in automobiles and machine tools, while lower grades serve general equipment like agricultural machinery. Key inspection parameters include pitch error, tooth profile deviation, and tooth direction tolerance, evaluated using coordinate measuring machines or dedicated gear testing equipment.
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