JB/T 7751-1995 Rolling bearings - Thrust tapered roller bearing tolerances

JB/T 7751-1995 Rolling bearings Thrust tapered roller bearing tolerances JB/T7751-1995 standard download decompression password: www.bzxz.net

JB/F7751-1995
This standard is formulated for the first time.
This standard was proposed by the National Technical Committee for Standardization of Rolling Bearings. This standard was proposed by the Mechanical Industry Bureau Yang Bearing Research Institute. The main drafting unit of this standard: Luoyang Bearing (Group) Company. The main drafters of this standard: Su Min, Jia Yuyun 618
Standards of the Machinery Industry of the People's Republic of China
Rolling Bearings
Thrust Tapered Roller Bearing Tolerances
JB/T 7751
This standard specifies the tolerances of thrust tapered roller bearings with PO grade tolerances of outer dimensions conforming to GB273.2 and outer diameter I) ≤ 500mm
This standard applies to the manufacture, inspection and acceptance of thrust tapered roller bearings. Referenced 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 all valid. All standards are subject to revision. Parties using this standard should explore the possibility of using the latest versions of the following standards. CB273.2-87 Rolling bearings Thrust bearing dimensions GB27491 Rolling bearing assembly chamfer limits
GBA199--84 Rolling bearing tolerance definitions
3 Symbols, definitions and abbreviations
See Figures 1, 2 and 3.
Except for the following symbols, the definitions of the symbols cited in this standard are specified in GB4199. A180\-2W1: Deviation of the cone angle of the raceway of the thrust tapered roller bearing shaft ring): Deviation of the cone angle of the raceway of the thrust tapered roller bearing seat ring Figure 1
Approved by the Ministry of Machinery Industry on June 16, 1995
Implemented on July 1, 1996 wwW.bzxz.Net
4 Tolerances
4.1 The tolerances of the shaft ring shall be as specified in Table 1.
4.2 The tolerance of the seat shall be in accordance with the provisions of Table 2.
Upper deviation
1) Should be measured at the maximum raceway to avoid overtravel precision 620
JB/T7751
Figure 2 Shaft washer
Figure 3 Seat washer
Alu mp
Shaft washer tolerance
Lower deviation
1) Same as Table 1 Note.
1: Deviation
JB/T7751---1995
Table 2 Seat washer tolerance
Lower deviation
3PO grade thrust tapered roller bearing height tolerance shall be in accordance with the provisions of Table 3. 4.3
Table 3 Height tolerance
4.4 Bearing assembly chamfer limit shall be in accordance with the provisions of GB274. Vr
1 Deviation
·S of bearing
shaft washer: phase
write shaft
lower deviation
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