Adding three new tolerance classes, totaling four (Class 4–7), allowing for a mixture of tolerance classes between mating parts to suit cost-effective production.
use the "Measurement Over Pins" or "Between Pins" data found in these tables to verify that the tooth thickness has been cut to the correct depth.
Used to verify the effective tooth size and the assembled functionality of the spline. 6. Summary of Key Changes (1996 Revision)
standard (often cited as ANSI B92.1-1970 or the revised ANSI B92.1-1996) governs the proportions, dimensions, tolerances, and inspection of involute splines. These are mechanical ridges or teeth on a drive shaft that mesh with grooves in a mating piece to transmit high levels of torque. ansi b 92.1 pdf 38
: It provides data and guidance for the design and manufacture of straight, non-helical, cylindrical involute splines. Interchangeability
Due to their robust design, ANSI B92.1 splines are found in:
The technical tables (often found within PDF documents of the standard) provide data for manufacturing and inspection. Definition Importance Number of Teeth Dictates overall diameter and torque capacity. DPcap D cap P Pitch (e.g., 8/16) Defines tooth size and pressure angle. Major Diameter Defines outer boundary (External). Minor Diameter Defines inner boundary (Internal). DFcap D cap F Form Diameter Lowest point of contact for the mating part. Effective Space/Thickness Controls fit and assembly. 3.1 Tolerance Classes Adding three new tolerance classes, totaling four (Class
lengths to accommodate heavy-duty mineral-oil-based pump assemblies. B. Page or Table Numbering in the PDF
The American National Standards Institute (ANSI) publishes various standards for different industries, including the B92.1 standard. This report provides an overview of the ANSI B92.1 standard, specifically focusing on the PDF 38 aspect.
: The 1996 revision utilizes four tolerance classes (4, 5, 6, and 7), providing varying levels of precision for different applications. : It provides data and guidance for the
: Specifies variations for classes (e.g., Class 4 through Class 7). Designers can "mix" classes (e.g., a Class 5 shaft with a Class 7 hub) to achieve an average Class 6 assembly tolerance, simplifying production. Content typically found on Page 38 (Technical Tables)
| Section | Typical Content | Approximate Page Range | | :--- | :--- | :--- | | | Purpose, definitions, spline types | 1-5 | | Basic Formulas | Tooth thickness, space width, root fillets | 6-12 | | Pressure Angles | 30°, 37.5°, 45° design tables | 13-25 | | Tolerances & Fits | Class 1, 2, 3, 4, 5 fits (loose to close) | 26-37 | | Inspection Data | Measurement over pins formulas, pin diameter selection | 38-45 | | Tooth Thickness Tables | Internal spline space width charts | 46-65 | | Annex (Examples) | Calculations for spline design | 66-85 |
However, I cannot access external PDFs, nor can I reproduce or write a paper based on a specific page of a copyrighted standard (ANSI B92.1 is a purchased document from the American Society of Mechanical Engineers, ASME).