JB/T 8722-1998 Rolling bearings Coal mine conveying machinery bearings
Some standard content:
ICS 21. 100. 20
Machinery Industry Standard of the People's Republic of China
JB/T8722
Rolling bearings
Bearings for conveyer in coal mine
Kolling bearings Benrings for conveyer in coal mine1998-03-19 Issued
Ministry of Machinery Industry of the People's Republic of China
1998-07-01 Implementation
1B/TB722—1998
This standard is formulated for the first time.
Appendix A of this standard is the negative record of the standard.
Appendix B of the technical standard is the indicative record.
This standard is proposed and managed by the National Standard Strengthening Technical Committee for Bearings. The originating units of this standard are Anhui Jiangnan Bearing Manufacturing Co., Ltd. and Wuqi Bearing. The originators of this standard are Yue Guoqiu, Gan Liyi, Yu Xian, Xia Leyuan, and Yao Gui. i
Machinery Industry Standard of the People's Republic of China
Rolling Bearings Coal Mine Conveying Machinery Bearings
Kulling Brarinus-Beurings Furcuhreyer in Cal Nine
JB/T 87221998
This standard specifies the dimensions and technical specifications of the roller bearings of coal conveyor belt conveyors (also called yoke bearings) and the axle bearings of railcars (also called mine traction bearings).
This standard is applicable to bearing manufacturing, production inspection and product acceptance. 2 Reference Standards
The individual clauses contained in an international standard are the clauses that are quoted in the standard and become technical standards. This standard is the official version, and the versions shown are all valid. All markings are subject to revision. Parties using this standard should investigate the possibility of using the latest editions of the following standards: GR/T 2729: GH/T 307. 1-14 GB/T 30T.21055 GR/T 307. 3 - 1SSE GB 345ES GL/- 4604—92 GB850788 Jn12551 JB/T 297495 JB/T 3034-98 JN/T 3303 JE/T 3374-1997 JB/T 70.A93 JH/T 70.A94 7031US
ZB D93 000C
Z J112389
3 Definitions
This standard uses the following definitions
3.1 Rotational resistance
Rolling bearings
Roller ... tt||Dissolving bearings
Roller bearings
Supplementary provisions for code numbering methodsbzxZ.net
Pre-sealed anti-rusting devices
Testing and evaluation methods
Production
Technical specifications for plastic cages
Parts surface ultra-high precision measurement and evaluation of three-way belt tractor support technical specifications for agricultural bearings and their commodity parts inspection and supervision regulations
Austin 101C belt
Glass bearing steel technical parts
Under certain load and speed, the friction between the internal parts is the same as the original rolling force. 3.2 Anti-stuck table
Under specific simulated working conditions, the time the shaft running resistance exceeds the specified rotational force value. Approved by the Ministry of Machinery Industry on March 19, 1998, implemented on July 1, 1998, No. 4 effective abbreviation (see Figure 1) D, bearing nominal outer diameter n: bearing nominal inner diameter B, shaft width: outer nominal angle dimension 7.: inner ring nominal dimension h (u): enlarged one-way dimension JI/T 8723199A The minimum size of the one-way ruler
5, fast number and mark
5.1 The whole code
difference 4 is composed of the shaft type code, size series code and inner diameter code. The type code is 6, and the small series code is 62.03. The inner code is in accordance with the provisions of 3.1.1.4 of G2.
5. 2. The subsequent code includes changes in cage material, function and structure: the non-series order is GF/T272, JT/T2974, indicating:
structure change
cage material
inner diameter
size series code
type code
J15 8722-1998
standard pool example: dynamic bearing 6310T/C2YAJB722191R spring, overall dimensions
overall dimensions are shown in Table 1.
Table 1 External dimensions
Axle
62TNC3YA
E2ETNC3YA
6S05TN,3ZA
RR06TN/:3YA
Outline dimensions of bearings.
CJOFN/tSYA
T3IIIN.C.YA
T3ITN/CTA
GITNYA
Technical requirements
7.! Material & Sand Treatment
rmtrun,?
7.1, 1 The bearing sleeve must be made of steel balls (C1 steel materials shall comply with the provisions of YH. The heat treatment quality of bearing parts shall comply with the provisions of J1255,
7.1.2 The shaft source retainer shall be made of HG224! The inner depth of the retainer shall be made of 11-methylene amide 100 resin: When the retainer is made of other T-shaped materials, it shall comply with the provisions of 3/7048: 7.2 The steel ball
bearing specification shall be in accordance with the current specification of B3, and the inner ball tolerance shall be G40 grade. 7.3 The dimensional tolerance and rotation speed of the shaft shall comply with the provisions of G/T307.1 center grade tolerance. 7.4 Surface plasticity The roughness of the shaft surface and the belt is in accordance with the tolerance of G3/T507.30 and is specified. 7.5 The auxiliary specifications shall be in accordance with the provisions of Table 1 of T46C493. 7.6 The rotation resistance of the bearing shall not exceed the requirements of Table 3. 7.7 Anti-seizure life JB/T87221998 Shaft hand rotation resistance 7.7.1 The anti-seizure life of the bearing shall not exceed 4CU in the test. 7.7.2 The life of the bearing shall not exceed 5Wh during the strengthening test. 7.8 The bearing shall not have any sharp load or roughness. The bearing should not be used exclusively, and the surface should not have internal scratches. 7.9 Others
If the user has other requirements, the inspection method can be determined through consultation with the manufacturer
The shaft size tolerance and rotation accuracy measurement method shall be in accordance with the provisions of B/T7.2. 8.2 The auxiliary bearing diameter measurement method shall be in accordance with the provisions of JB/T3573. 8.3 The bearing roughness shall be determined in accordance with the provisions of JB/T701. 8.4 The shaft heat treatment quality inspection method shall be in accordance with the provisions of JB/T1255. 8.5 The auxiliary bearing appearance quality inspection method under the astigmatism lamp
The bearing rotation method, anti-jamming test force method acceptance procedure shall be in accordance with A (Appendix of the standard). 1h Inspection rules
The bearing test qualification is ZB102, the test water depth is 1-share level, the test level is 1.5 items 4.0. The test time is shown in Table 1.
Test items
Main items
Internal and external conditions and economic disk, 4m,
Effective and dynamic
Effective to the mouse
Complete material bearing Jie internal space to dynamic
Disk outside in the direction
Limited width
External medical bias and academic use
Assembly agent market limit
Qualified surface and end of the natural + chaotic technology
Transformation: Check
Yingtong Institute
Special, Zhizuo three, pass, anti-zinc, long installation
10.2. When there is a problem, generally the rotation resistance test and anti-jamming life test should be carried out J1/TA722-1994
When new products are transformed into old products: b) After formal production, the product structure, parts materials, and processing technology have major changes, which may affect the spray performance; during normal production, regular inspections should be carried out· rotation resistance test· once a year, anti-jamming life test three times and once a year:) If there is any objection to the product quality, it is necessary to confirm it. 10.3 Bearing rotation resistance and anti-seizure life test test number and the specific determination see Table 5 Rotation overload and anti-seizure life test test number and the result judgment number
Coordinated system
Mining car request
Report request
Joint rotation E, force
10.4 Qualified products with quality certificate mark
For control effect
Specific determination number
41
Bearings shall comply with the specification of J/:3574. Bearing model certificate see production record B (report record) 12 Anti-rust, packaging and storage and transportation
The packaging and transportation of bearings shall comply with the provisions of B/T8034 and GB85S7. Unqualified slightly
A Test group adoption and preparation
JB/T8727-1998
(original request)
Test method and procedure
1! In a batch of the same specifications of the auxiliary bearings, randomly collect the products (20 auxiliary bearings, 1 set of bearings) outside the well center non-reference time on the network speed abandonment number:
A1.2 The sample is pulled by coal, and the chain is dried A2 Test equipment and conditions
2. 1 year rail rotation resistance state card test according to the principle and test method of science and technology ZB_393 0099 center 4.1 and 1.6 within the return. The rotation rate test method is shown in Figure 11, and the anti-jamming self-sealing test bench is shown in A250
Zhongyuanyuan
Medical ratio
JR/T8722-1998
A2.2 The roller and shaft height of the bearing test shall meet the requirements of Figure A3, size and standard table A]: The roller quotient and shaft height of the bearing test shall meet the requirements of Figure A4 and Figure A5, size and standard table A. 12.
Table A1 Sizes and tolerances of off-load bearing test pieces
C264IN,C3YA
63n5NC3A
3UuTN/CSXA
L3LETN/C3YA
G3IU-N/CTYA
131TN/:YA
E312TN/CTYA
13IN/G3YA
JB/T 872±-1498
Table A2 Sizes and tolerances of rollers and shafts for mine car transmission rate test
Saw bearing test rollers, push-pull axle test rollers, paint rollers for auxiliary expansion car transmission rate test: clean with ladder agent and paint ten times. 2.4 When the bearing is tested, there is no leakage. A2.5 The test temperature should be within the range of 20-25°C. Test procedure
Actual measurement
Install the product in the roller sleeve and run it for 15 minutes at 14501/min on the clutch test bench. 1
A3.1.2 The manufacturer has no support theory and the wheel is tested with a force of 250N. A3..Install the torque rod at the roller end and the other end on the dynamometer, and tighten the push pins of both instruments to zero position: start the test motor, hold the roller's external linear tracking range to 2.m. Record the number of dynamometer connections, and calculate the torque applied to the bearing according to the following formula: A3.1.4F
P=PFiR
Wherein -
torque,:
length,;
pole radius. mrr.;
Dynamometer reading,,
A32 European Car Tester
JB/T 8722-1908
A3.2.1 Install the connector in the life test bench, and put 2.5kg of coal powder with a particle size not greater than 0.6351rirrt in the sealed container of the test bench.
A3.2.2 Adjust the tension roller to feel the tension (the pressure is N. The auxiliary voltage of the mine car is 2900V). A3.2.3 Start the motor and turn it at a speed of 4m/s. Every 5b of operation, stop the operation. Every 1h, the coal powder should be blown continuously for 5s in the sealed container with a pressure of .5MFa to form a hot working condition of the coal dust. A3.2.4 During the operation of the bearing, the temperature of the bearing in the cylinder is measured once every hour, that is, the current of the motor. Under normal circumstances, when the bearing is overloaded or the motor current increases significantly, the bearing should be removed immediately and its rotation direction should be determined according to the provisions of A3.1. If the rotation value exceeds the value in Table A3, the bearing is considered to be failed. Table A3 Maximum effective torque of the shaft
A3.2.5 Record the total operating time before the shaft is half effective, which is the anti-seizure life of the bearing. A4 Test report
A4.1 A test report should be submitted one month after the completion of the test. Continued force
A4.2 The test report generally includes the sample model, manufacturing name, date, test items, test results and test period. 9
New H bearing model comparison see Table B1.
Bearing name
Drag bearing
IB/T 8722—1996
(Appendix)
New and old bearing model comparison
New and old model comparison table
New model
GAIN/CYA
G2GSINCYA
G3C5TN/C3YA
636IN/CIYA
G310TNC3YA
E3IIINCEYA
E3I2IN/C2TA
FHININ/C:YA
20510A
3G31CKA
3G312A
3G313KAYA
E312TN/CTYA
13IN/G3YA
JB/T 872±-1498
Table A2 Roller and axle dimensions and tolerances for mine car transmission test
Saw bearing test bearing, push and pull axle test bearing, brush and paint brush: clean and paint. 2.4 When testing, the bearing should not leak when the bearing is not sealed. A2.5 The test site should be within the range of 20-25. Test procedure
Actual measurement
Put the product in the roller and run it on the clutch test bench at 14501/min for 15min. Then, 2n.AS.1. 1
A3.1.2 The manufacturer has no support theory and the wheel is tested with a force of 250N. A3..Install the torque rod at the roller end and the other end on the dynamometer, and tighten the push pins of both instruments to zero position: start the test motor, hold the roller's external linear tracking range to 2.m. Record the number of dynamometer connections, and calculate the torque applied to the bearing according to the following formula: A3.1.4F
P=PFiR
Wherein -
torque,:
length,;
pole radius. mrr.;
Dynamometer reading,,
A32 European Car Tester
JB/T 8722-1908
A3.2.1 Install the connector in the life test bench, and put 2.5kg of coal powder with a particle size not greater than 0.6351rirrt in the sealed container of the test bench.
A3.2.2 Adjust the tension roller to feel the tension (the pressure is N. The auxiliary voltage of the mine car is 2900V). A3.2.3 Start the motor and turn it at a speed of 4m/s. Every 5b of operation, stop the operation. Every 1h, the coal powder should be blown continuously for 5s in the sealed container with a pressure of .5MFa to form a hot working condition of the coal dust. A3.2.4 During the operation of the bearing, the temperature of the bearing in the cylinder is measured once every hour, that is, the current of the motor. Under normal circumstances, when the bearing is overloaded or the motor current increases significantly, the bearing should be removed immediately and its rotation direction should be determined according to the provisions of A3.1. If the rotation value exceeds the value in Table A3, the bearing is considered to be failed. Table A3 Maximum effective torque of the shaft
A3.2.5 Record the total operating time before the shaft is half effective, which is the anti-seizure life of the bearing. A4 Test report
A4.1 A test report should be submitted one month after the completion of the test. Continued force
A4.2 The test report generally includes the sample model, manufacturing name, date, test items, test results and test period. 9
New H bearing model comparison see Table B1.
Bearing name
Drag bearing
IB/T 8722—1996
(Appendix)
New and old bearing model comparison
New and old model comparison table
New model
GAIN/CYA
G2GSINCYA
G3C5TN/C3YA
636IN/CIYA
G310TNC3YA
E3IIINCEYA
E3I2IN/C2TA
FHININ/C:YA
20510A
3G31CKA
3G312A
3G313KAYA
E312TN/CTYA
13IN/G3YA
JB/T 872±-1498
Table A2 Roller and axle dimensions and tolerances for mine car transmission test
Saw bearing test, push and pull axle test, paint brush, brush: clean and paint. 2.4 When testing, the bearing should not leak when the bearing is not sure. A2.5 The test site should be within the range of 20-25. Test procedure
Actual measurement
Put the product in the roller and run it on the clutch test bench at 14501/min for 15min. Then, 2n.AS.1. 1
A3.1.2 The manufacturer has no support theory and the wheel is tested with a force of 250N. A3..Install the torque rod at the roller end and the other end on the dynamometer, and tighten the push pins of both instruments to zero position: start the test motor, hold the roller's external linear tracking range to 2.m. Record the number of dynamometer connections, and calculate the torque applied to the bearing according to the following formula: A3.1.4F
P=PFiR
Wherein -
torque, length, and support radius. mrr.;
Dynamometer reading,,
A32 European Car Tester
JB/T 8722-1908
A3.2.1 Install the connector in the life test bench, and put 2.5kg of coal powder with a particle size not greater than 0.6351rirrt in the sealed container of the test bench.
A3.2.2 Adjust the tension roller to feel the tension (the pressure is N. The auxiliary voltage of the mine car is 2900V). A3.2.3 Start the motor and turn it at a speed of 4m/s. Every 5b of operation, stop the operation. Every 1h, the coal powder should be blown continuously for 5s in the sealed container with a pressure of .5MFa to form a hot working condition of the coal dust. A3.2.4 During the operation of the bearing, the temperature of the bearing in the cylinder is measured once every hour, that is, the current of the motor. Under normal circumstances, when the bearing is overloaded or the motor current increases significantly, the bearing should be removed immediately and its rotation direction should be determined according to the provisions of A3.1. If the rotation value exceeds the value in Table A3, the bearing is considered to be failed. Table A3 Maximum effective torque of the shaft
A3.2.5 Record the total operating time before the shaft is half effective, which is the anti-seizure life of the bearing. A4 Test report
A4.1 A test report should be submitted one month after the completion of the test. Continued force
A4.2 The test report generally includes the sample model, manufacturing name, date, test items, test results and test period. 9
New H bearing model comparison see Table B1.
Bearing name
Drag bearing
IB/T 8722—1996
(Appendix)
New and old bearing model comparison
New and old model comparison table
New model
GAIN/CYA
G2GSINCYA
G3C5TN/C3YA
636IN/CIYA
G310TNC3YA
E3IIINCEYA
E3I2IN/C2TA
FHININ/C:YA
20510A
3G31CKA
3G312A
3G313KA
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