JB/T 9893-1999 This standard is a revision of ZB J51 005-89 "Installation and connection dimensions of ball screw nut pair". The technical content has been modified as follows: 1. The installation and connection dimensions of ball nuts of three series, including external circulation embedded lead ball screw pair, external circulation protruding large lead ball screw pair, and external circulation embedded micro ball screw pair, have been added. 2. All the terms and codes used in this standard have been modified in accordance with the provisions of GB/T 17587.1-1998 "Ball Screw Pair Part 1: Terms and Symbols". 3. The countersunk hole dimensions on the ball nut flange have all been modified in accordance with GB/T 152.2-1998 "Countersunk Holes for Countersunk Fasteners", and the relevant dimensions have been adjusted. The standards that complement this standard are: GB/T 17587.1-1998 Ball screw pairs Part 1: Terms and symbols GB/T 17587.2-1998 Ball screw pairs Part 2: Nominal diameters and nominal lead - metric series GB/T 17587.3-1998 Ball screw pairs Part 3: Acceptance conditions and acceptance inspection JB/T 3162.4-1993 Ball screw pairs - Screw shaft end type dimensions This standard specifies the ball nut installation and connection dimensions of commonly used ball screw pairs. This standard applies to the following six types of metric ball screws used in machine tools and various mechanical products: a) Internal circulation ball screws (including floating reverse type and fixed reverse type); b) External circulation embedded ball screws; c) External circulation protruding ball screws; d) External circulation embedded large lead ball screws; e) External circulation protruding large lead ball screws; f) External circulation embedded miniature ball screws. Other structures can be used as a reference. The ball nut installation and connection dimensions of cold-rolled ball screws should also be used as a reference. This standard was first issued in March 1989. JB/T 9893-1999 Ball screw ball nut installation and connection dimensions JB/T9893-1999 Standard download decompression password: www.bzxz.net

This standard is revised on the basis of JB/T 9893-1999 "Nut Installation Connection Dimensions". The technical contents of the original standard are not adapted to the needs of scientific and technological development. The following technical contents have been modified and supplemented: the installation connection dimensions of ball nuts of three series, including external circulation embedded large lead ball screw pair, external circulation protruding large lead ball screw pair, and external circulation embedded miniature ball screw pair, have been added. The terms and codes used in this standard are all modified in accordance with the provisions of GB/T17587.1-1998 "Ball Screw Pair Part 1: Terms and Symbols". The countersunk hole dimensions on the flange of the ball nut are all modified in accordance with GB/T152.2-1988 "Countersunk Holes for Countersunk Fasteners", and the relevant dimensions are adjusted together. The standards matching this standard are:
GB/T17587.1—1998 Ball screw pair Part 1: Terms and symbols GB/T17587.2--1998 Ball screw pair Part 2: Nominal diameter and nominal lead Metric series
GB/T17587.3—1998 Ball screw pair Part 3: Acceptance conditions and acceptance inspection JB/T3162.4-—1993 Ball screw pair Screw shaft end type dimensions This standard replaces ZBJ51005-89 from the date of implementation. Appendix A of this standard is the appendix of the standard.
Appendix B of this standard is the appendix of the suggestion.
This standard is proposed by the National Technical Committee for Standardization of Metal Cutting Machine Tools. This standard is organized by the Rolling Function Components Branch of the National Technical Committee for Standardization of Metal Cutting Machine Tools. The responsible drafting unit of this standard: Beijing Machine Tool Research Institute. The drafting organizations of this standard include Nanjing Technology Equipment Manufacturing Plant, Hanjiang Machine Tool Plant, and Shandong Jining Screw Factory. This standard was first issued in March 1989.
1 Scope
Machinery Industry Standard of the People's Republic of China
Ball Screw Pair
Installation and Connection Dimensions
Ball Nut
This standard specifies the installation and connection dimensions of the ball nut of the commonly used ball screw pair. JB/T 9893—1999
Replaces ZBJ51005—89
This standard applies to the following six types of metric ball screw pairs used in machine tools and various mechanical products: internal circulation ball screw pairs (including floating reverser type and fixed reverser type); a)
b) external circulation embedded ball screw pairs;
external circulation protruding ball screw pairs;
d) external circulation embedded large lead ball screw pairs, external circulation protruding large lead ball screw pairs; e)
f) external circulation embedded miniature ball screw pairs. Other structures can be used for reference.
The ball nut installation and connection dimensions of cold-rolled ball screw pairs should also be used for reference. Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. At the time of publication of this standard, the versions shown are valid. All standards are subject to revision, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T308—1989 Rolling bearing steel balls
GB/T17587.21998 Ball screw pair Part 2: Nominal diameter and nominal lead Metric series GB/T152.2—1988 Countersunk holes for fastener countersunk heads GB/T2822—1981 Standard dimensions
GB/T1801—1979 Tolerance and fit dimensions to 500mm holes, shaft tolerance zones and fits 3 Cross ball nut installation and connection dimensions
3.1 The specification codes in this standard are expressed in numbers, the first two or three digits indicate the nominal diameter, and the last two digits indicate the nominal lead.
3.2 The installation and connection dimensions of the ball nut of the internal circulation ball screw pair shall comply with the provisions of Figure 1 and Table 1. Approved by the State Bureau of Machinery Industry on May 20, 1999 628
Implementation on January 1, 2000
JB/T9893—1999
Ball nut installation and connection dimensions
: 10016
JB/T9893—1999
Table 1 (end)
Ball nut installation and connection dimensions
1 The combination of nominal diameter and nominal lead shall comply with GB/T17587.2 (the same below). 2D, D, h shall comply with GB/T152.2 (the same below). B
3 The data in brackets in the table are the installation and connection dimensions of the ball nut with double nut washer preload structure (the same below). D
3.3 The installation and connection dimensions of the ball nut of the external circulation embedded ball screw pair shall comply with the provisions of Figure 2 and Table 2. 630
JB/T 9893-1999
Ball nut installation and connection dimensions
JB/T 9893-—1999
Table 2 (end)Www.bzxZ.net
Ball nut installation and connection dimensions
JB/T98931999
3.4 ​​The installation and connection dimensions of the ball nut of the external circulation protruding ball screw pair shall comply with the requirements of Figure 3 and Table 3. Du
Ball nut installation and connection dimensions
JB/T 9893—1999
Table 3 (Complete)
Ball nut installation and connection dimensions
JB/T 9893—1999
3.5The ball nut installation and connection dimensions of the external circulation embedded large lead ball screw pair shall comply with the provisions of Figure 4 and Table 4. D4
Ball nut installation and connection dimensions
JB/T9893—1999
3.6The ball nut installation and connection dimensions of the external circulation protruding large lead ball screw pair shall comply with the provisions of Figure 5 and Table 5. 2u
Ball nut installation and connection dimensions
JB/T9893—1999
The ball nut installation and connection dimensions of the external circulation embedded miniature ball screw pair shall comply with the provisions of Figure 6 and Table 6. 3.7
Deepness of countersunk hole D h
Ball nut installation and connection dimensions
3.8The ball nut installation matching dimension D1 shall be in accordance with the provisions of GB/T2822, and its tolerance shall adopt g6 in GB/T1801—1979. When the ball screw pair accuracy is equal to or lower than Grade 5, its tolerance is allowed to be g7. The effective length of the D1 locating surface depends on the structural characteristics of different products.
3.9For a double-nut ball screw pair, the installation matching dimension accuracy of one ball nut is allowed to be lower than g6 (when the ball screw pair accuracy is equal to or lower than Grade 5, it is allowed to be lower than g7).
3.10 According to the design requirements of the host machine, it is allowed to remove a part of the ball nut flange. 3.11 This standard does not specify the length of the ball nut, which is determined by the manufacturer. 637
Miniature ball screw pair
JB/T9893—1999
Appendix A
(Appendix to the standard)
Terms of ball screw pair
Ball screw pair with a nominal diameter less than or equal to 12mm. Large lead ball screw pair
Ball screw pair with a helix angle greater than or equal to 9°. 638
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