This standard specifies the main dimensions, markings, technical requirements, tests and inspections of three-way flanged pipe joints (hereinafter referred to as pipe joints) for machine tool electrical system accessories. This standard applies to three-way flanged pipe joints for connecting steel pipes or pipe joints for cables and wires in machine tool electrical systems. It can also be used as a reference for electrical systems of other machines. JB/T 8774.11-1998 Three-way flanged pipe joints for machine tool electrical system accessories JB/T8774.11-1998 Standard download decompression password: www.bzxz.net

Machinery Industry Standard of the People's Republic of China
JB/F8774.1--8774.15—1998
Machine Tool Electrical System Accessories
Published on July 17, 1998
National Machinery Industry Bureau
Implementation on December 1, 1998
JB/I 8774.J—1998
This standard is made on the basis of the one-piece pipe connection set specially purchased by the head office for many years in the production of machine tool return air system accessories. Products produced in accordance with this standard (/15226.1-1005% of the second industry machine reduction electrical equipment sales acceptance: Part: General letter spare parts $ related regulations: This standard is the central technical requirements of the Beijing Machine Tool Assembly Institute of the Ministry of Machinery Industry. This standard is under the jurisdiction of the Beijing Machine Tool Assembly Institute of the Ministry of Technology. The management of this standard is the Beijing Machine Tool Joint Components Factory, the Beijing Wujin Machine Tool Return Device Factory, the Beijing First Bending Machine Factory, and the Northeast Second Cylinder Machine Factory. 3
Machinery Industry Standard of the People's Republic of China
Machine Tool Electrical System Accessories
Tee Flange Pipe Joint
JB/T 8774.11.1998
This standard defines the main dimensions, system specifications, technical requirements, tests and inspections of the "three-way connection" (hereinafter referred to as the "three-way connection") for electrical system parts.
This standard is applicable to the one-way connection of the cable and wire used in the machine tool system. The electrical system of other machines can refer to the following standards.
2 Referenced Standards
The provisions contained in the following standards shall become the provisions of this standard through reference in the relevant standards. When the standard is published, the original version shall be effective. The parties who use this standard shall use the latest version of the following standards. GT-5
GB19761
CB 7I-&8
GB 7507.67
GB 013R88
1:EJ440-&8
Core B/T >226. 1
Jt R3:—X5
3Structure
Lower Kaia Bull Head Screw
Will pass screw number tolerance and courtyard (Xiao Fu 1-353rm non-tight pipe change line
Alloy stop parts, technical core parts
General transfer parts
Three industry protection and reduction electrical equipment Part 1 General technical provisions Heat tracing low electrical technical requirements
Joint structure example Figure 1.
Main wife size
Add the upper size of the joint 2 and support 1. National Machinery Industry Week 1817 approved
1998-12 implementation
According to the damage research regulations
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5 mark
JBA.111998
The pipe is in accordance with the international standard, joint pattern specifications and markings and variations. For example, the screw head specification MI61.5 is marked as: :
Pipe head M16X1.5JN/T8774.11-159 8 The joint body thread effect specification of the "joint" is as follows: Joint body, B/877411595
(Technical requirements
JB/T$774.
1 The material of the joint body is aluminum alloy, and the remaining materials are cast or have sufficient star degree. 6.2 The material of the cast alloy should meet the requirements of R33. 6.4 The forgeable iron should meet the requirements of G911. 6.S The steel before embedding should meet the requirements of GB700. 6.6 The thread effect of the head is ordinary thread effect sheet, and the joint is B! The specification is the S specification for the pipe, and the B7 specification is the main specification. 6.7
Verify the traces and wires of the pipe head. There should be a special chamfer and a special light-eliminating diagram. There should be no defects in the wires and cables. 6.9 The strip joints should be provided with necessary accessories or necessary measures. If the user has requirements for strip joints, such as resistance to rust and salt, special orders should be made for strong requirements! Its products should meet the requirements of B834:610. The name of the manufacturer or the name of the joint should not be easily disappeared. The test and inspection
have been carried out. The materials, dimensions (sampling inspection), processing quality, etc. of the pipe joints should comply with the provisions of Chapter 1 and Chapter 6. 7.2 According to the grounding test [sampling inspection]
test, the core of the joint should also meet the requirements of (/T5225.1).
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