This standard specifies the types and sizes of threaded connection ports for hydraulic components. This standard applies to the ports of threaded hydraulic components with a working pressure not exceeding 40MPa. GB/T 2878-1993 Types and sizes of threaded connection ports for hydraulic components GB/T2878-1993 Standard download decompression password: www.bzxz.net

UpC621:643.06
National Standard of the People's Republic of China
GB/F2878—93
Threaded connection of hydraulic components
Oil port type and size
Fluid power systems and components-:PortsDimensions and design
Published on 1993-01-11
National Technical Supervision Bureau
Implemented on 1993-10-01
National Standard of the People's Republic of China
Threaded connection of hydraulic components
Oil port type and size
Flold power systems aod cemponenls-Port LeDlmenslong and desig
GR/T 2878—93
Sent on behalf of CB 2878 -81
This standard adopts the international standard 1506149·1980 Fluid transmission systems and components - Metric oil ports - Types and dimensions*
Main content and applicable scope
This standard specifies the types and dimensions of the oil ports of pressure reducing components. This standard is applicable to the oil ports of threaded pressure reducing components with a working pressure not exceeding 40MPa. 2 Reference standard
GB3452,1 Size system and tolerance of shaped rubber seals for pressure reducing pneumatics 3 Types and dimensions
3.1 Type
3.t.1 The type A of the pressure reducing component port shall be as specified in Figure 1, and the type B of the pressure reducing component port (not preferred) shall be as specified in Figure 2. Approved by the State Administration of Technology Supervision on January 11, 1993, and implemented on October 1, 1993. GB/T2878-93 (brush stroke) in the teaching method. The oil port of the pressure element in the figure is type A. Note: 1. There shall be no directional or spiral marks on the whole. It is allowed to have a value of less than 1.6m. Others) Figure 2 Hydraulic element oil port type B (not preferred) 3.2 feet ± tt|| The oil port size of the pressure wave element shall be subject to the provisions of the following table. K
【Effective H
M11X1-5
M27×2
GB/r2878—93
Liquid-dispersed component sleeve dimensionsbzxz.net
Note: 1) The deviation between dimension V and effective center diameter D: is not greater than 0.1mm. The maximum hole depth described in ax
2 should ensure that the wrench can reach the required opening of the screw or the end of the screw. If the surface is processed, the dimensions and the length of the screw thread indicated in the table must be added. The length of the screw thread indicated in the table must be greater than the length of the screw thread indicated in the table. When using standard sound storage, the local increase of the bottom hole step,
GB/T2878-93
Liquid carbon component burst connection oil port
Use 0-shaped seal
(test piece)
A1 hydraulic component frequency connection oil Chuan use 0-shaped rubber seal according to the diagram can be selected from the table A7, table A1
M*2×2
M50×2
M60×2
Additional instructions:
Type of rubber seal
1E000315
16 000 6C0
E Uou 80O
650NOD
2550112D
26501320
25501500
26 501700
26 5α-1 900
35502240
35 502 800
35503750
S560462G
555056
This standard is approved by the Ministry of Machinery and Electronics Industry of the People's Republic of China. This standard is approved by the National Technical Committee for Standardization of Pressure Reducing Pneumatics. This standard is drafted by the Beijing Institute of Automation of Machinery and Electronics Industry. The main drafter of this standard is Fan Tianxun.
This standard is entrusted to the Beijing Institute of Automation of Machinery Industry of the Ministry of Machinery and Electronics Industry for interpretation. Standard No.
GR N452.1
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.