JB/T 8564-1997 This standard specifies the code method, overall dimensions, technical requirements and measurement methods of metric series thrust angular contact ball bearings (hereinafter referred to as bearings) for machine tool screw supports. This standard applies to thrust angular contact ball bearings for machine tool screw supports and is provided for production, inspection and user acceptance by manufacturers. JB/T 8564-1997 Rolling bearings Thrust angular contact ball bearings for machine tool screws JB/T8564-1997 Standard download decompression password: www.bzxz.net

JB/T8564--- 1997
This standard is formulated for the first time.
Appendix A of this standard is a reminder appendix.
This standard is proposed and managed by the National Technical Committee for Standardization of Rolling Bearings. Drafting unit of this standard: Harbin Bearing Group Co., Ltd. Main drafters of this standard: Wu Lihua, Yong Taifang. 664
1 Scope
Mechanical Industry Standards of the People's Republic of China
Rolling Bearings
Thrust Angular Contact Ball Bearings for Machine Tool Screws
JB8564
This standard specifies the code method of Sichuan series thrust angular contact ball bearings (hereinafter referred to as bearings) for machine tool screw supports, except: technical requirements and measurement methods.www.bzxz.net
This standard applies to thrust angular contact ball bearings for machine tool screw supports, for manufacturing! Production, inspection and acceptance of production orders 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, all the original versions are valid. All standards will be revised. All parties using this standard should explore the possibility of using the latest versions of the following standards (13/T272-93 Code method for dynamic bearings GB/T307.1-94 Tolerances of radial bearings for rolling bearings GB/T 307.2-1995 Rolling bearings, principles and methods of measurement and inspection GB307.384 Rolling bearings-General technical requirements GB 4199-84 GB 8597-88 Rolling bearings public definition Rolling bearing packaging JB/T 2974-93 ZB JII 020-89 ZB 11 023--89
3 Symbols and abbreviations
Supplementary provisions for the legality of rolling bearing codes
Inspection rules and technical conditions for rolling bearings and their commodity parts
Symbols and abbreviations for contact angle measuring instrument type J6915 for angular contact ball bearings Figure 1.
The symbols and definitions used in this standard are specified in GB4199 except for the following symbols. Ad2: The difference between the average inner diameters of a set of bearings
: The difference between the average outer diameters of a set of bearings Mutual difference
S..\Sa%: Mutual difference S.aSen2: Difference in runout between the inner ring end face and the raceway of a set of bearings4: Deviation of protrusion after preload
Approved by the Ministry of Machinery Industry on April 15, 1997
Approved on January 1, 1998
4 Bearing code method
JB/T8564--1997
The bearing code consists of a basic code and a post-code. 4.1 Basic code
The basic code consists of the bearing type code, dimension series code and inner diameter code. The type code is 76, the dimension series code is 02, 03, and the inner diameter code is in accordance with the provisions of 3.1.1.4 of GB/T272-~93. 4.2 Post-code
The post-code includes structural variants, tolerance grades, combination methods, preload, etc. The arrangement order is in accordance with the provisions of GB/T272 and JB/T2974. ||t t||Code example:
5 mark
-Preload code
-Matching combination code
~Tolerance grade code
Cage material code
Inner diameter code
Dimension series code
Bearing type code, contact angle is 60°
Marking example: Rolling bearing 760205TN/P4DFAJB/T8564-1997666
6 Overall dimensions
See Table 1 and Table 2 for overall dimensions.
Bearing code
760201
760202
760203
760201
760205
760206
760207
760208
760209
760210
760211
760212
760213
760214
760215
760216
760217
760218
760219
760220
Yoke code number
760304
7603 05
760306
760307
760308
760310
JB/T 8564--1997
02 series
Table 203 series
Tisrain
Bearing code
760311
760312
760313
760314
760315
760316
760317
760318
760319
760320
Technical requirements
7.1 Bearing tolerance
Bearing tolerance is divided into 4.2 levels
IB/T 8564
Table 2 (end)
The tolerance of the bearing shall comply with the provisions of GB/T307.1 in addition to the provisions of Table 3. After the bearing is assembled, the width limit deviation of a single ring is ..25mm, Table 3 Tolerance
Nominal diameter/mm
Note: The nominal diameter refers to the corresponding inner diameter or outer diameter. 7.2 Contact angle
Contact angle deviation is +-3°, the contact angle difference of bearings in the same group shall not exceed 2°7.3 Xianbao
Universal bearings, under preload, the protrusion of the inner and outer ring end faces of a single bearing shall be equal to (, and the maximum concave deviation shall be in accordance with the regulations in Table 1. Bearings are supplied in single sets, and users can arrange and install them according to their needs.668
Nominal inner diameter/mm
7.4 Dynamic friction force short
JB/T8564-1997
Table 4 The deviation of the call amount
The preload and corresponding starting friction torque of the bearing group shall not exceed the provisions of Table 5Table 5 Preload and starting friction torque
Diameter series
Nominal inner mm!
Preload/N
+ 300)
10:000
12 000
11 000
13 000
14 000
24 000
Starting friction short/10N·m
Nominal inner diameter/mml
Diameter series
7.5 Marking
JB/T8564--1997
Table 5 (Complete)
Preload/N
7.5.1 After the bearing assembly is completed, complete the bearing code. C
22 000
36 000
38 000
Starting friction torque/(10-3N·m）
7.5.2 The maximum points of the runout Sa and Se of the inner and outer rings of the bearings on the raceway shall be marked on the inner and outer rings of the bearings respectively, and the marking symbols shall be specified by the manufacturer (see Figure 2).
7.5.3 After the bearings are assembled, an angle line shall be drawn on the outer diameter to indicate the pairing direction (Figure 3, Figure 4 and Figure 5). 7.6 Others
Other technical requirements shall comply with the provisions of GB307.3. Sea maximum point
S; maximum point
8 Measurement method
JB/T8564--1997
8.1 The tolerance measurement method shall comply with the provisions of GB/T307.2. 8.2 The contact angle shall be measured in accordance with the instruments and measurement principles specified in ZBJ11023. 8.3 The method for measuring the preload protrusion shall be in accordance with the regulations of the competent department of the manufacturer. Figure 5
8.4 For the measurement of the starting friction torque of bearings of all assembly methods (2, 3, 4 sets, etc.), two sets of bearings shall be assembled together in a back-to-back (DB) form and the starting friction torque shall be sampled and tested. The measured value shall not be greater than twice the value specified in Table 5. The number of random inspections shall not be less than 5% of the production batch and shall not be less than 5 sets at least. The measurement method is shown in Appendix A (Suggested Appendix). 9 Inspection Rules
9.1 In addition to the provisions of ZBJ11020, the main inspection items of bearings include Zama—Amp2Apmp-Abmn2Sual--Sa2, SealSea2*The qualified quality level AQL value is 1.5. 9.2 100% inspection of contact angle, qualified quality level AQL value is 4. 10 Bearing oiling packaging
Each assembled bearing group should be oil-sealed to prevent rust. In addition to complying with the provisions of GB8597, the individual bearings in the group should be sealed with clean plastic bags and placed in the same packaging box, and each set of bearings should be separated by rust-proof cardboard; for universal assembled bearings, individual bearings should be sealed with clean plastic bags and placed in the packaging box. The bearing quality certificate and the tested bearing should be placed in the same packaging box and shall not be replaced. 671
JB/T8564
Appendix A
(Suggestive Appendix)
Schematic diagram of the method for measuring the starting friction torque The schematic diagram of the method for measuring the starting friction torque is shown in Figure A1AL
Measuring torque
Preload
Preload teaching guide
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