GB/T 44622-2024 English PDF (GB/T44622-2024)

GB/T 44622-2024: Transmission flanges for commercial vehicles - Types A, S and T
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GB/T 44622-2024
GB
NATIONAL STANDARD OF THE
PEOPLE'S REPUBLIC OF CHINA
ICS 43.040.50
CCS T 21
Transmission flanges for commercial vehicles - Types A, S
and T
(ISO 7646:1986, Commercial vehicles and buses - Gearbox flanges - Type A; ISO
7647:1986, Commercial vehicles and buses - Gearbox flanges - Type S; ISO
8667:1992, Commercial vehicles and buses - Cross-tooth gearbox flanges, type T,
MOD)
ISSUED ON: SEPTEMBER 29, 2024
IMPLEMENTED ON: JANUARY 1, 2025
Issued by: State Administration for Market Regulation;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Terms and definitions ... 5
4 Marking ... 5
5 Types and dimensional parameters ... 6
Foreword
This document was drafted in accordance with the provisions of GB/T 1.1-2020
Directives for standardization - Part 1: Rules for the structure and drafting of
standardizing documents.
This document is modified in relation to ISO 7646:1986 Commercial vehicles and buses
- Gearbox flanges - Type A, ISO 7647:1986 Commercial vehicles and buses - Gearbox
flanges - Type S and ISO 8667:1992 Commercial vehicles and buses - Cross-tooth
gearbox flanges, type T.
Compared to ISO 7646:1986, ISO 7647:1986 and ISO 8667:1992, this document has
made the following structural adjustments:
-- Chapter 4 corresponds to Chapter 4 of ISO 7646:1986, Chapter 4 of ISO
7647:1986 and Chapter 3 of ISO 8667:1992;
-- 5.1 corresponds to Chapter 3 of ISO 7646:1986, 5.2 corresponds to Chapter 3 of
ISO 7647:1986, and 5.3 corresponds to Chapter 3 of ISO 8667:1992.
The technical differences between this document and ISO 7646:1986, ISO 7647:1986
and ISO 8667:1992 and their reasons are as follows:
-- The flange marking method (see Chapter 4) has been changed to adapt to the
unified provisions of this document;
-- The height tolerance of the T-flange tooth has been changed (see Figure 9) to
accommodate a wider range of processing techniques.
The following editorial changes have been made to this document:
-- ISO 7646:1986, ISO 7647:1986 and ISO 8667:1992 are integrated, and the
standard name is changed to "Transmission flanges for commercial vehicles -
Types A, S and T";
-- The annotation of the figures has been changed to comply with Chinese
mechanical drawing standards.
Please note that some of the contents of this document may involve patents. The issuing
organization of this document does not assume the responsibility for identifying patents.
This document was proposed by the Ministry of Industry and Information Technology
of the People's Republic of China.
This document is under the jurisdiction of the National Technical Committee of Auto
Standardization (SAC/TC114).
Transmission flanges for commercial vehicles - Types A, S
and T
1 Scope
This document specifies the marking, type and dimensional parameters of Type A, S
and T transmission flanges for commercial vehicles.
This document applies to flanges installed between transmissions and mating
components in commercial vehicles.
2 Normative references
This document has no normative references.
3 Terms and definitions
There are no terms or definitions that require definition in this document.
4 Marking
The transmission flange shall be marked in detail in the following order:
a) The number of this document;
b) Type code;
c) Flange diameter d1 (applicable to type A and type T flanges) or specification
code (applicable to type S flanges);
d) Number of fixing bolts (applicable to type A and type S flanges);
e) Thread specifications of fixing bolts (applicable to type A and type S flanges).
EXAMPLE 1:
The transmission flange of type A, diameter d1=150 mm, number of fixing bolts=8, thread specification
of fixing bolts=12 mm is marked as:
Flange GB/T 44622-A 150×8×12
EXAMPLE 2:
GB/T 44622-2024
GB
NATIONAL STANDARD OF THE
PEOPLE'S REPUBLIC OF CHINA
ICS 43.040.50
CCS T 21
Transmission flanges for commercial vehicles - Types A, S
and T
(ISO 7646:1986, Commercial vehicles and buses - Gearbox flanges - Type A; ISO
7647:1986, Commercial vehicles and buses - Gearbox flanges - Type S; ISO
8667:1992, Commercial vehicles and buses - Cross-tooth gearbox flanges, type T,
MOD)
ISSUED ON: SEPTEMBER 29, 2024
IMPLEMENTED ON: JANUARY 1, 2025
Issued by: State Administration for Market Regulation;
Standardization Administration of PRC.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Terms and definitions ... 5
4 Marking ... 5
5 Types and dimensional parameters ... 6
Foreword
This document was drafted in accordance with the provisions of GB/T 1.1-2020
Directives for standardization - Part 1: Rules for the structure and drafting of
standardizing documents.
This document is modified in relation to ISO 7646:1986 Commercial vehicles and buses
- Gearbox flanges - Type A, ISO 7647:1986 Commercial vehicles and buses - Gearbox
flanges - Type S and ISO 8667:1992 Commercial vehicles and buses - Cross-tooth
gearbox flanges, type T.
Compared to ISO 7646:1986, ISO 7647:1986 and ISO 8667:1992, this document has
made the following structural adjustments:
-- Chapter 4 corresponds to Chapter 4 of ISO 7646:1986, Chapter 4 of ISO
7647:1986 and Chapter 3 of ISO 8667:1992;
-- 5.1 corresponds to Chapter 3 of ISO 7646:1986, 5.2 corresponds to Chapter 3 of
ISO 7647:1986, and 5.3 corresponds to Chapter 3 of ISO 8667:1992.
The technical differences between this document and ISO 7646:1986, ISO 7647:1986
and ISO 8667:1992 and their reasons are as follows:
-- The flange marking method (see Chapter 4) has been changed to adapt to the
unified provisions of this document;
-- The height tolerance of the T-flange tooth has been changed (see Figure 9) to
accommodate a wider range of processing techniques.
The following editorial changes have been made to this document:
-- ISO 7646:1986, ISO 7647:1986 and ISO 8667:1992 are integrated, and the
standard name is changed to "Transmission flanges for commercial vehicles -
Types A, S and T";
-- The annotation of the figures has been changed to comply with Chinese
mechanical drawing standards.
Please note that some of the contents of this document may involve patents. The issuing
organization of this document does not assume the responsibility for identifying patents.
This document was proposed by the Ministry of Industry and Information Technology
of the People's Republic of China.
This document is under the jurisdiction of the National Technical Committee of Auto
Standardization (SAC/TC114).
Transmission flanges for commercial vehicles - Types A, S
and T
1 Scope
This document specifies the marking, type and dimensional parameters of Type A, S
and T transmission flanges for commercial vehicles.
This document applies to flanges installed between transmissions and mating
components in commercial vehicles.
2 Normative references
This document has no normative references.
3 Terms and definitions
There are no terms or definitions that require definition in this document.
4 Marking
The transmission flange shall be marked in detail in the following order:
a) The number of this document;
b) Type code;
c) Flange diameter d1 (applicable to type A and type T flanges) or specification
code (applicable to type S flanges);
d) Number of fixing bolts (applicable to type A and type S flanges);
e) Thread specifications of fixing bolts (applicable to type A and type S flanges).
EXAMPLE 1:
The transmission flange of type A, diameter d1=150 mm, number of fixing bolts=8, thread specification
of fixing bolts=12 mm is marked as:
Flange GB/T 44622-A 150×8×12
EXAMPLE 2: