JB/T 7943.1-1999 This standard is a revision of JB/T7943.1-95 "Basic parameters of lubrication systems and components". During the revision, only editorial changes were made according to relevant regulations, and the main technical content remained unchanged. This standard specifies the basic parameters of lubrication systems and components. This standard applies to lubrication systems and components. This standard was first issued on February 21, 1986 as GB 5865-86 and was adjusted to JB/T 7943.1-95 in April 1996. JB/T 7943.1-1999 Basic parameters of lubrication devices and components JB/T7943.1-1999 Standard download decompression password: www.bzxz.net

ICS21.260
Machinery Industry Standard of the People's Republic of China
JB/T7943.1-1999
Lubrication systems and elements
Basic parameters
General specificationforlubricationsystemsandelements
Published on 1999-06-28
National Bureau of Machinery Industry
Implemented on 2000-01-01
JB/T7943.1—1999
This standard is a revision of JB/T7943.1--95 "Lubrication systems and elements", and the main technical content has not changed. This standard replaces JB/7943.1—95 from the date of implementation. Appendix A of this standard is a reminder appendix.
Basic parameters". During the revision, the original standard was edited. This standard was proposed and managed by the Technical Committee for Standardization of Metallurgical Equipment. This standard was drafted by Taiyuan Lubrication and Hydraulic Research Institute. The main drafters of this standard are Mao Jiping, Wang Binghua, Li Weimin, Li Shumin, and Shi Changlu. This standard was first issued in February 1986.
Mechanical Industry Standard of the People's Republic of China
Lubrication system and elements
Basic parameters
General specification for lubrication systems and elements
This standard specifies the basic parameters of lubrication systems and elements. This standard applies to lubrication systems and elements. 2 Reference standards
JB/T 7943.1—1999
Replaces JB/T7943.1—95
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest version of the following standards. GB/T 321—1980
GB/T 2822--1981
GB/T 7306—-1987
GB/T 73071987bzxZ.net
GB/T 12716-1991
JB/T 3711.3—1999
3 Nominal pressure
Preferred numbers and priority number systems
Standard sizes
Pipe threads sealed with threads
Pipe threads not sealed with threads
60° tapered pipe threads
Technical quantities and units of centralized lubrication systems
The nominal pressure values ​​of lubrication systems and components shall be as specified in Table 1. Table 1
3.2 The nominal pressure value below 0.1MPa shall be selected according to the R5 number system in GB/T321: The nominal pressure value above 250MPa shall be selected according to the R10 number system in GB/T321 approved by the State Machinery Industry Bureau on 1999-06-28 and implemented on 2000-01-01
.
4 Speed ​​(or stroke frequency)
JB/T 7943.11999
4.1 The speed of the rotary lubrication pump and the stroke frequency of the reciprocating lubrication pump shall comply with the provisions of Table 2. Table 2
For tickets with motor drive (without speed change device), the speed value is allowed to adopt the speed of the corresponding motor. The actual deviation of the speed is allowed to be -6.5% of the value specified in Table 2. Nominal diameter
The nominal diameter of sealed cylindrical moving parts (pistons, plungers and sliding valves, etc.) in lubrication systems and components shall comply with the provisions of Table 3. Table 3
1 The nominal diameter values ​​in brackets are non-preferred values. 3.0
2 Not applicable to parts with accurate calculated diameters. 4.0
5.2 The nominal diameter values ​​above 50mm shall be selected according to the Ra10 numerical system in GB/T2822. 6 Nominal volume
The nominal volume of the oil tank shall comply with the provisions of Table 4. 6.1
JB/T7943.1—1999
1 The nominal volume above 1000L can be measured in cubic meters (m). 2 Not applicable to built-in oil tanks.
Nominal volume values ​​lower than 0.4L shall be selected according to the R5 number system in GB/T321; nominal volume values ​​higher than 80000L shall be selected according to the R10 number system in GB/T3216.2
.
Connection thread
The dimensions of the connection thread between the lubricating element and the pipeline shall comply with the provisions of Table 5. Table 5
M30×2
M45×2
M10×1
M33×2
M48×2
Note: It is not applicable to the fastening thread of flange connection. M4
M12×1.25
M36×2
M52×2
M39×2
M56×2
M27×2
M42×2
M60×2
7.2 The taper pipe thread (α=55°) in GB/T7306, the cylindrical pipe thread (α=55°) in GB/T7307 and the 60° national taper pipe thread in GB/T12716 are allowed.
8 Nominal displacement
8.1 The nominal displacement per revolution of the rotary lubrication pump and the nominal displacement per stroke of the reciprocating lubrication pump shall comply with the provisions of Table 6. 8.2 The nominal displacement value below 1.0mL shall be selected according to the R10 number system in GB/T321; the nominal displacement value above 2800mL shall be selected according to the R20 number system in GB/T321, and the values ​​included in the R10 number system shall be preferred. 8.3 In addition to mL, the parameter units may also use the corresponding units specified in JB/T3711.3. 8.4 The actual deviation of the nominal displacement value from the value specified in Table 6 is: -5%~+10% is allowed for lubricating oil, and +10% is allowed for grease.
Note: The values ​​in brackets are non-preferred values. Nominal flow
JB/T7943.1-1999
The nominal flow values ​​of lubrication systems and components shall comply with the provisions of Table 7. Table 7
(1120)
(1400)
(1800)
(2240)
(2800)
JB/T7943.1-1999
9.2 The nominal flow rate values ​​below 0.1L/min shall be selected according to the R5 number system in GB/T32I: the nominal flow rate values ​​above 2500L/min shall be selected according to the R10 number system in GB/T321.
9.3 In addition to L/min, the parameter units may also adopt the corresponding units specified in JB/T3711.3. 10 Nominal diameter
10.1 The nominal diameter of the lubrication system and components shall comply with the provisions of Table 8. Table 8
Nominal diameters below 0.1mm and above 400mm shall be selected according to the Ra10 numerical system in GB/T2822. 10.2
10.3The actual inner diameter range of the nominal diameter is shown in Appendix A (suggestive appendix). 11 Oil supply per hole per cycle
11.1The oil supply per hole per cycle of the distributor shall comply with the provisions of Table 9. Table 9
The oil supply per hole per cycle below 0.1mL shall be selected according to the R5 numerical system in GB/T321; the oil supply per hole per cycle above 20mL11.2
The oil supply per hole per cycle shall be selected according to the R10 numerical system in GB/T321.
11.3The allowable deviation between the actual value of the oil supply per hole per cycle and the value specified in Table 9 is +10%. 5
JB/T7943.1—1999
(Appendix of Prompt)
Nominal diameter and actual inner diameter correspondence table
A1The nominal diameter and actual inner diameter correspondence table is shown in Table A1. Table A1
Nominal diameter
Actual inner diameter example
90~113
113~143
143180
180-225
225~285
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