GB/T 10224-2025 Basic rack tooth profile of fine-pitch bevel gears English, Anglais, Englisch, Inglés, えいご
This is a draft translation for reference among interesting stakeholders. The finalized translation (passing through draft translation, self-check, revision and verification) will be delivered upon being ordered.
ICS 21. 200 CCS J 17
GB/T 10224-2025 replaces GB/T 10224-1988
Basic rack tooth profile of fine-pitch bevel gears
Issued on 2025-08-29 Implemented on 2026-03-01
Issued by State Administration for Market Regulation Standardization Administration of China
Contents
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Parameters
Basic rack tooth profile of fine-pitch bevel gears
1 Scope
This document specifies the basic tooth profile and main parameters of straight-tooth and helical bevel gears, spiral bevel gears, and hypoid gears. This document applies to straight-tooth and helical bevel gears, spiral bevel gears, and hypoid gears with a mean normal module mmn < 1 mm.
2 Normative references
The following documents contain provisions which, through reference in this text, constitute provisions of this document. For dated references, only the editions cited apply. For undated references, the latest edition (including any amendments) applies.
GB/T 3374. 1 Gears—Terminology and definitions—Part 1: Definitions for geometry
GB/T 43146 Geometry of bevel gears and hypoid gears
3 Terms and definitions
1 basic tooth profile of bevel gears
The imaginary tooth profile at the mean end face of the basic crown wheel.
2 nominal pressure angle (α)
The mean normal pressure angle.
3 working depth (h)
The height of the mean tooth profile engaged during actual meshing transmission.
4 Parameters
1 Overview
This document specifies the parameters of the basic tooth profile based on the reference line.
2 Basic tooth profile and main parameters
The basic tooth profile of bevel gears is shown in Figure 1. The main parameters are as follows:
— Nominal pressure angle (α);
— Addendum (ha);
— Dedendum (hf);
GB/T 10224-2025 Basic rack tooth profile of fine-pitch bevel gears English, Anglais, Englisch, Inglés, えいご
This is a draft translation for reference among interesting stakeholders. The finalized translation (passing through draft translation, self-check, revision and verification) will be delivered upon being ordered.
ICS 21. 200 CCS J 17
GB/T 10224-2025 replaces GB/T 10224-1988
Basic rack tooth profile of fine-pitch bevel gears
Issued on 2025-08-29 Implemented on 2026-03-01
Issued by State Administration for Market Regulation Standardization Administration of China
Contents
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Parameters
Basic rack tooth profile of fine-pitch bevel gears
1 Scope
This document specifies the basic tooth profile and main parameters of straight-tooth and helical bevel gears, spiral bevel gears, and hypoid gears. This document applies to straight-tooth and helical bevel gears, spiral bevel gears, and hypoid gears with a mean normal module mmn < 1 mm.
2 Normative references
The following documents contain provisions which, through reference in this text, constitute provisions of this document. For dated references, only the editions cited apply. For undated references, the latest edition (including any amendments) applies.
GB/T 3374. 1 Gears—Terminology and definitions—Part 1: Definitions for geometry
GB/T 43146 Geometry of bevel gears and hypoid gears
3 Terms and definitions
1 basic tooth profile of bevel gears
The imaginary tooth profile at the mean end face of the basic crown wheel.
2 nominal pressure angle (α)
The mean normal pressure angle.
3 working depth (h)
The height of the mean tooth profile engaged during actual meshing transmission.
4 Parameters
1 Overview
This document specifies the parameters of the basic tooth profile based on the reference line.
2 Basic tooth profile and main parameters
The basic tooth profile of bevel gears is shown in Figure 1. The main parameters are as follows:
— Nominal pressure angle (α);
— Addendum (ha);
— Dedendum (hf);
