This standard specifies the type, basic parameters and main dimensions of flange couplings (hereinafter referred to as couplings), and gives technical requirements, inspection rules, marking, packaging and storage. This standard is applicable to transmission shaft systems that connect two coaxial lines, and the nominal torque transmitted is 25N·m to 100 000N·m. GB/T 5843-2003 Flange coupling GB/T5843-2003 Standard download decompression password: www.bzxz.net

GB/T 5843--2003
This standard is a revision of GB/T5843-1986 "Flange Coupling". Compared with GB/T5843--1986, the main changes in this standard are as follows:
The coupling model has been modified according to GB/T12458 "Coupling Classification"; the structural type has been increased from two to three;
The nominal torque has been greatly adjusted, which is more than twice the original standard; the specifications have been reduced from 18 to 13;
The material of the half coupling - cast iron and cast steel has been cancelled; -·The dimensions that must be selected have been added; - The original Appendix A "Coupling Selection Instructions" has been deleted. This standard was proposed and assigned by the National Technical Committee for Standardization of Machine Shafts and Accessories. The drafting units of this standard are: Mechanical Science Research Institute, Deyang Erzhong Basic Parts Factory. The main drafters of this standard are: Ming Cuixin, Wang Jiannong, Gao Wen, and Liu Xueguang. The previous versions of the standards replaced by this standard are: -GB/T 5843-1986.
1 Scope
Flange coupling
GB/T 5843-2003
This standard specifies the type, basic parameters and main dimensions of flange couplings (hereinafter referred to as couplings), and gives technical requirements, inspection rules, marking, packaging and storage.
This standard is applicable to transmission shaft systems connecting two coaxial lines, and the nominal torque transmitted is 25N·m～100000N·m. 2 Normative references
The clauses in the following documents become the clauses of this standard through reference in this standard. For all dated references, all subsequent amendments (excluding errata) or revisions are not applicable to this standard. However, the parties who reach an agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For all undated references, the latest versions are applicable to this standard. GB/T27 Hexagonal bolts for reaming holes, Grade A and B GB/T191 Pictorial markings for packaging, storage and transportation
GB/T 699
High-quality carbon structural steel
GB/T1184—1996 Shape and position tolerances without tolerance values ​​(eqVISO2768-2:1989) Coupling shaft holes and connection types and dimensions
GB/T 3852
GB/T 4879
Rust-proof packaging
GB/T 5782
Hexagonal bolts
GB/T 6170
Type 1 hexagonal nuts
3 Shipping and receiving marks for transport packaging
GB/T 6388
GB/T12458 Coupling classification
General technical conditions for packaging of electromechanical products
GB/T13384
3 Classification
3.1 Type
Couplings are divided into three types: GY, GYS and GYH. 3.2 Model marking
Coupling models and markings shall comply with the provisions of GB/T12458. 4 Basic parameters and main dimensions
4.1 The basic parameters and main dimensions of GY flange couplings shall comply with the provisions of Figure 1 and Table 1. 1
GB/T58432003
Y-type shaft hole
Small shaft hole
Y-type shaft hole
JI type shaft hole
Figure 1GY type flange coupling
4.2The basic parameters and main dimensions of GYS type centering flange coupling shall comply with the requirements of Figure 2 and Table 1. Sign
Y-type shaft hole
J: type shaft hole
Y-type shaft hole
J, type shaft hole
Figure 2GYS type flange coupling with centering sample
GB/T5843--2003
4.3The basic parameters and main dimensions of GYH type flange coupling with centering ring shall comply with the provisions of Figure 3 and Table 1, b
Y-type shaft hole
J-type shaft hole
Nominal torque
Allowable speed
Y-type shaft hole
Small, type shaft hole
Figure 3GYH type coupling with centering ring flange
Shaft hole diameter
Th/(Nm)/EnJ/(r/min)
di, d2
Shaft hole length L
Unit is mm
Moment of inertia
I/(kg·m2
0, 002 512. 38
GB/T5843—2003
Nominal torque
Allowable speed
T./(N . m)/[n]/(r/min)
Shaft hole diameter
Table 1 (continued)
Shaft hole length L
1601100
Unit: mm
Moment of inertia
I/(kg·m2）
0.0033.15
Nominal torque
T,/(N·m)||tt| |100000
Permissible speed
Cn]/(r/min)
Shaft hole diameterbzxZ.net
di, d2
Table 1 (continued)
Shaft hole length L
352282
380260
4601320
Note: Mass and moment of inertia are based on GY type coupling Y/Ji 4.4 The marking method of the coupling and the shaft hole and connection type and size of the shaft hole combination type and calculation of the minimum shaft hole diameter shall comply with the provisions of GB/T3852. 5 Technical requirements
5.1 The coupling shall comply with the requirements of this standard and be manufactured in accordance with the product drawings and technical documents approved in the prescribed procedures. 5.2 The materials of the main parts of the coupling shall comply with the provisions of Table 2. s
GB/T5843-2003
Unit: mm
Moment of inertia
1/(kg.m2) m/kg
19.978611.9
GB/T5843--2003
Part name
Half coupling
Centering ring
Performance level 8.8
Performance level 8
GB/T 699
GB/T 5782
GB/T 27
GB/T 6170
5.3 When the coupling is assembled, the coaxiality of the shaft hole at one end of the two coupling halves shall be in accordance with the 9th grade specified in Appendix B Table B4 of GB/T11844-1996.
5.4 When using flange couplings, safety protection devices should be provided. Inspection rules
Factory inspection
6.1.1 Each set of couplings shall be inspected in accordance with the requirements of Chapter 4 and drawings before leaving the factory. 6.1.2 Each set of couplings shall be inspected and qualified by the product quality inspection department of the manufacturer and accompanied by a product quality certificate before leaving the factory. 6.2 Type inspection
Type inspection shall be carried out for the first product of a series or when there are major changes in product structure, materials, and processes, or when the contract stipulates. 6.2.1 Inspection items
Inspection items shall be in accordance with the provisions of 6.1.1.
6.2.2 Sampling and batching rules
When the first batch of coupling production is less than 10 units, 1 unit shall be inspected; when it is 10 to 50 units, 2 units shall be inspected; and when it is more than 50 units, 3 units shall be inspected. If the first inspection fails, double the number; if it fails again, all units shall be inspected. 7
Marking, packaging and storage
7.1 Marking
7.1.1 The two half couplings shall be marked with model marks according to the parts shown in the figure. 7.1.2 The following contents shall be indicated on the certificate of each coupling: a)
coupling name, model and standard number;
b) manufacturer name;
factory date;
d) inspection mark.
7.2 Packaging
7.2.1 After cleaning, the coupling shall be packed for rust prevention in accordance with the provisions of GB/T4879. 7.2.2 Packaging requirements shall be in accordance with the provisions of GB/T13384. 7.2.3 The markings on the outer packaging box of the coupling shall comply with the provisions of GB/T191 and GB/T6388. 7.3 Purchase and storage
7.3.1 The coupling shall be stored in a clean, dry and ventilated environment, away from sunlight and rain, and shall be kept away from contact with substances such as acids, alkalis and organic solvents during the storage period.
7.3.2 In compliance with 7.3.1, the manufacturer shall ensure that the performance of the product still complies with the requirements of this standard during the two-year storage period from the date of leaving the factory.
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