DIN Standards Committee Mechanical Engineering
Straight cylindrical involute splines — Metric modul, side fit — Part 1: Generalities
Abstract
ISO 4156 (all parts) provides the data and indications necessary for the design, manufacture and inspection of straight (non-helical) side-fitting cylindrical involute splines. Straight cylindrical involute splines manufactured in accordance with ISO 4156 (all parts) are used for clearance, sliding and interference connections of shafts and hubs. They contain all the necessary characteristics for the assembly, transmission of torque, and economic production. The nominal pressure angles are 30°, 37,5° and 45°. For electronic data processing purposes, the form of expression 37,5° has been adopted instead of 37°30’. ISO 4156 (all parts) establishes a specification based on the following modules: — for pressure angles of 30° and 37,5° the module increments are: 0,5; 0,75; 1; 1,25; 1,5; 1,75; 2; 2,5; 3; 4; 5; 6; 8; 10; — for pressure angle of 45° the module increments are: 0,25; 0,5; 0,75; 1; 1,25; 1,5; 1,75; 2; 2,5 This document provides the data and indications necessary for the design and manufacture of straight (non-helical) side-fitting cylindrical involute splines. Limiting dimensions, tolerances, manufacturing deviations and their effects on the fit between connecting coaxial spline elements are defined in the formulae and given in the tables. Unless otherwise specified, linear dimensions are expressed in millimetres and angular dimensions in degrees.
Begin
2024-12-17
Planned document number
DIN ISO 4156-1
Project number
06004533
