DIN ISO 4156-2:2025-07
Straight cylindrical involute splines - Metric module, side fit - Part 2: Dimensions (ISO 4156-2:2021); Text in German and English / Note: Date of issue 2025-06-06
| Fecha edición: |
2026-01-01
Anulada
|
|---|---|
| Fecha cancelación: | 2026-01-01 |
| Idiomas disponibles: | Alemán, Inglés |
| Resumen: | 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 specifies geometry and inspection dimensions for the design and manufacture of straight (non-helical) side-fitting cylindrical involute splines. Limiting dimensions, tolerances, manufacturing errors and their effects on the fit between connecting coaxial spline elements are defined and tabulated. Linear dimensions are expressed in millimetres and angular dimensions in degrees. The specified diameters for external splines in the geometry tables and the values in the inspection dimension tables are only valid for fundamental deviation "h". For fundamental deviations other than "h", diameters and tooth thicknesses are calculated for external splines according to the formulae in ISO 4156-1 and inspection dimensions according to the formulae in ISO 4156-3. |
| Keywords: | Angle of pressure|Check gauge|Dimensional tolerances|Dimensions|External teeth|Fasteners|Fits|Formulae (mathematics)|Geometry|Interlocking joints|Involute splines|Involute teeth|Mathematical calculations|Mechanical engineering|Metric|Shaft-hub-connections|Shafts|Splines|Teeth of gears |
| ICS: | 21.120.30 - Chavetas, chaveteros y acanaladuras |
| CTN: | |
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Equivalencia Internacional |
Idéntica ISO 4156-2:2021 |
|
Reemplazo Normas |
Es reemplazada por DIN ISO 4156-2:2026-01 |
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