JB/T 2300-1999 This standard is a revision of JB 2300-84 "Types, basic parameters and technical requirements of slewing bearings". The changes in technical content are as follows: - Some product specifications have been added; - The assembly accuracy of slewing bearing assemblies of various raceway types has been appropriately adjusted. This standard specifies the types, basic parameters, requirements, test methods, inspection rules, marking, packaging, transportation and storage of slewing bearings. This standard is applicable to slewing bearings of engineering machinery, mining machinery, construction machinery and other machinery that require two parts to perform relative rotational motion. This standard was first issued on December 20, 1984. JB/T 2300-1999 Slewing bearing JB/T2300-1999 standard download decompression password: www.bzxz.net

ICS53.100
Machinery Industry Standard of the People's Republic of China
JB/T2300—1999
Swing bearing
Published on September 17, 1999
National Bureau of Machinery Industry
Implementation on January 1, 2000
JB/T2300—1999
5 Requirements
6 Test force method
7 Inspection rules
8 Marking, packaging, transportation and storage
Appendix A (Appendix of special standards) Selection algorithm of swing bearing Appendix B (Appendix of standards! Swing bearing load capacity curve
JB2300—1999|| tt||This standard is a revision of B2300-84 Basic Parameters and Technical Requirements for Slewing Bearings. Compared with B2300-84, this standard has the following changes in terms of technical content: This standard adds torque test method, inspection rules, marking, packaging, transportation and storage, etc., to become a complete product standard, so the name of the standard is changed to slewing bearings. One more product specification is added:
Appropriate adjustments have been made to the assembly precision control of various raceway type slewing bearings. This standard replaces B2300-84 from the date of implementation. Appendix A of this standard, Appendix Appendix B are all standard appendices. This standard was proposed and managed by the T Machinery Industry Standardization Technical Committee. The drafting sites of this standard are: Dajin Machinery Industry Bureau, Xu Xiang Slewing Bearing Company, Shanhui Mengyang Heavy Machinery Factory. The main initiators of this standard are: Xu Xiangjing, Du San, Luo Qiu, Zhang Mingliang. This standard was first issued on February 20, 1984. 1 Scope
Machinery Industry Standards of the People's Republic of China
Slewing Bearing
Swingbcaring
JB/T2300-1999
Old 230 0-84
This standard specifies the type, basic parameters, requirements, test methods, inspection rules, marking, packaging, transportation and acceptance of slewing bearings. This standard is applicable to slewing bearings of process machinery, machinery and construction machinery and other machinery that requires relative slewing motion of two parts. 2 Reference standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard was published, the versions shown were effective approximately: All standards will be revised, and each industry using non-standards should explore the feasibility of using the latest version of the following standards. GR.T 308---1989
GR/T6991999
GH/T1299-.1985
GD:T :357—1987
GD:T 2828—1987
GR:T1077—1999
GB/T309B.:—1982
GDT 309B.2—1982
GD/T 4661—i989
GB:T 5617[985
GB.T73241994
GB.T 10095—19B8
JBrT 594T—199!
JB/[ 7940.7.-[995
HG:T 2349—1592
HG:T 28111996
YB/T 5143-1993
3 Symbols
Rotary bearing steel balls
Quality combustion decay structural steel technical parts
Alloy steel technical conditions
Involute mesh column wheel module
Batch-by-batch inspection counting sample sequence and sampling table (applicable to continuous batch inspection) Taijin structural steel technical conditions
End parts mechanical recovery performance bolts: screws and studs fasteners mechanical wet nuts
Rolling bearing mesh Du Zizi
Steel inductive properties after screen fire or flame rate fire effective hardness Determination of the depth of the corrosion layer. General lithium. Its grease
Tide line grid column gear characteristics
General technical conditions for the packaging of downstream machinery
Impact technology parts
Polyamide [resin
Rotary shaft seal rubber material
Metal average grain size determination
National rotary bearing parts name and symbol guide table 1, approved by the State Machinery Industry Bureau on 1999-09-17 and implemented on 2000-01-01
4 Classification
【1: row】degree of this center circle (1. Diameter of the moving body
External installation diameter
Inner ring installation hole diameter
Nominal outer diameter
Nominal inner diameter
External inner diameter
Inner ring outer diameter
Inner and outer ring height
, outer two sliding surface difference
Effective hardening layer composition
4. Structural type
JB/T2300-1999
Table of names and symbols of various parts
Number of holes
Number of holes
External installation hole diameter
External installation hole diameter
Internal installation hole diameter
Installation hole thread length
Tooth order
Secondary wheel light variable coefficient
The slewing bearing is composed of a variable body (inner idle, outer net, up and down), a sealing cabinet and a cup, etc. 4.1.1 Roller type
1 Single-point four-point contact ball slewing bearing (0 series) see Figure 1: b? Reducing ball slewing bearing (02 series: see Figure 2. Its moving body nominal true diameter combination is upper row/lower push: 25/20, 30/2540/30, 50/40, 60/50;
] Single row cross steady slewing bearing (11 series): 3, its rolling element is [: [0" cross arrangement: d) Single row roller bar slewing bearing (13 series: see Figure 4, its rolling element nominal diameter combination is upper row and lower non-radial/radial: 2520/1, 32/25/20, 40/32/25, 45/ 32/25.50/40/25.4.1.2 Transmission ratio formula
110-Optical factor:
5!1-Involute gear external gear meshing small module: 2-Involute gear external gear meshing large module; d-Involute gear internal gear meshing small module; 4-Involute gear internal gear meshing large module. 4.1.3 Assembly type
a) D-Standard type without stop;
b) 1-Standard type with stop;
c-Special type
4. 1. 4 Installation type
) - Inner and outer mounting holes are through holes:
b1 - Inner and outer mounting holes are butterfly holes JB door 230W-1999
] 2 - Inner male mounting holes are grooved, outer mounting holes are through holes d - Outer male mounting holes are grooved holes, inner hollow mounting holes are through holes Note: Inner and outer mounting holes are countersunk holes (Figure 2-4 are alternately marked here, end hole type 1
Figure 1 Single row point-connected ball type swivel bearing [0 series] Figure 2 Double grip different diameter ball swivel bearing [02 series) 3
JE/T 2300—1999
Single-row cross roller slewing bearing (11 series) 4. Parameters
4.2. Basic parameters of single-row four-point contact ball bearing series are shown in Table 4. 4.2.2 Basic parameters of double-row different-diameter ball slewing bearing series are shown in Table 3. 4.2.3 Basic parameters of single-row cross and column slewing bearing series are shown in Table 4. 4.2.4 Basic parameters of single-row H-type slewing bearing series are shown in Table 5. Pavilion 4, three-row rate hanging surface transfer support (13 filled JB/T2300-19g
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