This standard replaces ZB J11 004-87. This standard has the following differences from the previous version: - The tolerance grade code has been changed according to GB/T 272-93. - The standard graphics have been modified to make them conform to reality and increase the graphic serial number. This standard specifies the tolerances of thrust spherical roller bearings with grade 0 tolerance. This standard is applicable to the manufacture, inspection and acceptance of bearings. JB/T 7750-1995 Rolling bearings Thrust spherical roller bearing tolerances JB/T7750-1995 Standard download decompression password: www.bzxz.net

JB/T7750-1995
This standard replaces ZBJ1100487.
This standard has the following differences compared with the previous version:
a) The standard number is changed from "ZBJ11004-87" to \JB/T7750--1995;
b) The tolerance grade code is changed according to GB/T272--93; c) The standard graphics are modified to make them conform to the actual situation and increase the graphic serial number. This standard replaces ZBJ11004-87 from the date of implementation. Appendix A of this standard is the appendix of the standard.
This standard is proposed by the National Technical Committee for the Promotion of Rolling Bearing Standards. This standard is under the jurisdiction of Luoyang Bearing Research Institute of the Ministry of Machinery Industry. The drafting unit of this standard: Wafangdian Bearing Factory. The main drafter of this standard: Tang Jingfu
Mechanical Industry Standard of the People's Republic of China
Rolling Bearing
Thrust Spherical Roller Bearing Tolerance
This standard specifies the tolerance of thrust spherical roller bearings with grade 0 tolerance. This standard applies to the manufacture, inspection and acceptance of bearings. 2 Referenced Standards
JB/T7750
Replaces ZBJ1100-··87
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. The versions shown at the time of publication of this standard are valid. All standards will be revised, and the parties using this standard should explore the possibility of using the latest versions of the following standards. GB5859-94 Rolling Bearing Thrust Spherical Roller Bearing Dimensions
Symbols and Abbreviations
Symbols are shown in Figures 1 and 2.
Approved by the Ministry of Machinery Industry on June 16, 1995
Implementation on July 1, 1996
: Nominal inner diameter of bearing shaft ring
JB/T7750--1995
m: Deviation of the average inner diameter of the bearing shaft ring in a single radial plane dp: Variation of the inner diameter of the bearing shaft ring in a single radial plane[): Nominal outer diameter of the bearing seat ringbzxz.net
Au: Deviation of the average outer diameter of the bearing seat ring in a single radial plane V: Variation of the outer diameter of the bearing seat ring in a single radial plane T: Nominal height of the bearing,
r: Bearing height deviation
4 Tolerances
The tolerances of shaft ring and bearing shall be as specified in Table 1
The tolerances of seat ring shall be as specified in Table 2.
1 Shaft washer and bearing tolerances
Upper deviation
Lower deviation
Table 2 Seat washer tolerances
Vap/rm
Amup/um
Upper deviation
Lower deviation
Lower deviation
(Standard attachment)
Recommended measurement method
A1 The recommended measurement method for the auxiliary bearing height deviation is shown in A". Figure Al
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