However, accessing this standard requires caution.
The JSA is the definitive source for all JIS publications.
In industrial catalogs (like those from Misumi or KHK ), you will often see gear precision rated by "Class". Jis B 1702-1 | PDF - Scribd
Understanding the grade system is not just an academic exercise; it directly dictates real-world product specifications. For instance, a manufacturer of stainless steel spur gears might specify their product as "JIS N8 grade (JIS B1702-1: 1998)" . For a high-quality aluminum-bronze screw gear, the standard JIS N9 grade ensures a balance of strength and economy .
Found in the PDF's section on "Pitch deviations." If your gear has high Fp, it will vibrate. The JIS table provides exact micrometers (µm) of error allowed based on pitch diameter and grade. jis b 1702-1 pdf
The JIS B 1702 series is divided into multiple parts to address different measurement methods and materials: Accuracy of Gears | KHK
The PDF contains empirical formulas that allow software developers and CAD/CAM engineers to input gear modules and pitch diameters to calculate exact allowable error limits in micrometers (
Aerospace, master gears, high-accuracy laboratory testing equipment. Grade 6 – 7
Finding a "JIS B 1702-1 PDF" is crucial for implementing proper design specifications and ensuring gear performance. This article explains the standard, its evolution, and where to locate the official document. What is JIS B 1702-1? However, accessing this standard requires caution
If you have specific questions about your application—for example, whether an N6 or N8 grade is more suitable for your design's speed and load requirements—please provide additional details, and I will do my best to assist further.
(Single Pitch Deviation): The deviation between actual measured pitch and theoretical pitch. Fpcap F sub p
To help users transition from the old JIS grades, most Japanese suppliers use a clear notation: the grade number is prefixed with an "N" to denote the new standard. Common grades available in standard commercial gear catalogs (like those from KHK or MISUMI) include N5, N6, N7, N8, and N9. These span a range from high precision to general industrial use .
JIS B 1702-1 specifically defines the . It applies to both external and internal gears with straight, helical, or herringbone teeth. Jis B 1702-1 | PDF - Scribd Understanding
. It replaced the older 1976 version of the JIS gear accuracy standards to provide a more rigorous, mathematically defined classification system. Key Specifications & Classification Accuracy Grades : The standard defines 11 quality grades , ranging from (highest precision, typically for master gears) to
Explain the .
The JIS B 1702-1 standard is more than just a document—it is the foundation of gear quality assurance in the Japanese and global manufacturing industries. It has evolved from a national system to a globally harmonized ISO standard, ensuring that high-quality gears are interchangeable across international markets.