Jis B 1702-1 Pdf May 2026

JIS B 1702-1 is the Japanese Industrial Standard for cylindrical gear flank tolerance, adopting ISO 1328-1 to define accuracy grades (0-12) for gear quality control. The standard provides detailed mathematical formulas and tolerance tables for designing and inspecting precision machinery components, ensuring compatibility with international benchmarks. For purchasing the official PDF, visit the Japanese Standards Association (JSA) website.

JIS B 1702-1 is a standard published by the Japanese Standards Association (JSA) that defines the requirements for spur and helical gears used in various applications, including industrial machinery, automotive, and aerospace. The standard covers the design, manufacturing, and inspection of gears to ensure their quality and performance. jis b 1702-1 pdf

1. Tooth Profile: The standard specifies the acceptable limits for tooth profile deviations, including the tooth shape, size, and position.
2. Tooth Lead: The standard defines the acceptable limits for tooth lead deviations, which refer to the alignment of the tooth flank.
3. Tooth Flank: The standard outlines the acceptable limits for tooth flank deviations, which refer to the surface finish and texture of the tooth flank.

How much the actual tooth curve deviates from the ideal involute curve. Total Helix Deviation ( cap F sub beta JIS B 1702-1 is the Japanese Industrial Standard

What is JIS B 1702-1? Defining the Benchmark

Before you search for the PDF, you must understand what the document actually governs. Tooth Profile : The standard specifies the acceptable

: Total helix deviation, helix form deviation, and helix slope deviation. Accuracy Grades : Defines 13 grades of gear accuracy (0 through 12), where is the highest accuracy and is the lowest. Intertek Inform Where to Access the PDF

Higher Precision: Lower numbers (e.g., Grade 0 or 1) indicate extremely high precision, used in aerospace or master gears.