SIST ISO 4156-1:2021

Name: SIST ISO 4156-1:2021 — Straight cylindrical involute splines - Metric module, side fit - Part 1: Generalities
SKU: SIST ISO 4156-1:2021
Price: 122400 RUB
Availability: InStock

Straight cylindrical involute splines - Metric module, side fit - Part 1: Generalities

Название (английский):

Straight cylindrical involute splines - Metric module, side fit - Part 1: Generalities

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 68
Дата публикации:: 7 сентября 2021 г.
ICS:: 21.120.30
Технический комитет:: I12 - Imaginarni 12 Imaginarni TC za ISO področje - vzdrževani privzeti ISO standardi

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Описание (английский):

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.

Abstract

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Стандарты, упомянутые в описании

Overview

SIST ISO 4156-1:2021 – Straight cylindrical involute splines - Metric module, side fit - Part 1: Generalities - defines the general principles, terminology and essential data for the design, manufacture and inspection of straight (non‑helical) side‑fitting cylindrical involute splines. It specifies limiting dimensions, symbols, tolerances, and the effects of manufacturing deviations on the fit between coaxial spline elements. Unless stated otherwise, linear dimensions are in millimetres and angular dimensions in degrees.

Key topics and technical requirements

Terminology and symbols: definitions for pitch circle, module, pressure angle, form diameter, effective and actual space width/tooth thickness.

Pressure angles and module series: supported nominal pressure angles are 30°, 37.5° and 45°, with prescribed metric module increments for each angle (e.g., 0.5, 0.75, 1 … up to 10 mm for 30°/37.5°, and 0.25–2.5 mm for 45°).

Concepts of side fit and effective fit: how clearance or engagement occurs between mating internal and external splines, including definitions used for design and inspection.

Profile and pitch control: basic rack profiles, total profile/pitch deviations and their influence on fit and torque transmission.

Spline fit classes and tolerancing: classes for different fit conditions and the formulae/tables for space width, tooth thickness tolerances, total and machining tolerances (T, λ, F etc.).

Diameters and geometry control: minor, major and form diameters, their tolerances and adjustments for external splines.

Manufacturing considerations: recommended radii, profile shifts, eccentricity/misalignment effects and practical measurement points.

Drawing and designation data: recommended data and examples (Annex A) to ensure unambiguous specification on engineering drawings.

Normative references: includes ISO 1101 for geometrical tolerancing.

Practical applications

Transmission of torque using shafts and hubs in powertrain, gearboxes, machine tools and heavy machinery.

Use cases include clearance, sliding, and interference spline connections where controlled side fit is required.

Ensures repeatable, economical production and reliable assembly for replacement parts, high‑volume manufacturing and interchangeable assemblies.

Who should use this standard

Mechanical designers and drivetrain engineers specifying spline joints.

Manufacturing engineers and toolmakers producing splines (broaching, hobbing, grinding).

Quality and inspection personnel verifying spline dimensions and fits.

Procurement and standards managers ensuring component compliance and interchangeability.

SIST ISO 4156-1:2021

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Practical applications

Who should use this standard

Related standards

Технические детали

ISO 4156-1:2021

Straight cylindrical involute splines — Metric module, side fit — Part 1: Generalities

SIST EN ISO 1101:2017

Geometrical product specifications (GPS) - Geometrical tolerancing - Tolerances of form, orientation, locatio…

BS ISO 4156-2:2021

Straight cylindrical involute splines. Metric module, side fit. Dimensions.