JB/T 8887-1999 Technical requirements for wheels for tractors and agricultural and forestry machinery
Some standard content:
1CS65.060.10
Machinery Industry Standard of the People's Republic of China
JB/T8887—1999
Wheels of tractor and machinery for agriculture and forestrySpecifications
Published on August 6, 1999
State Machinery Industry Bureau
Implementation on January 1, 2000
JR/T88871999
This standard is a revision of K401-86 Technical Specifications for Wheels for Agriculture and Forestry Machinery. Compared with 401-86, this standard has the following ten major technical contents changed: 1. The bench fatigue strength of the wheel has been added; 2. The recommended steel grades for the wheel material have been increased, and the mechanical properties of steel cabinets and strip steel can be selected: the tensile strength is 31541, and the length ratio of the cut piece is 31%-35%. 3. The recommended steel grades for the spoke material have been increased, and the mechanical properties of steel plates can be selected: the tensile strength is 375-.460N/mm?, and the length ratio is less than 26%. This standard adds the conversion of wheel assembly and offset into Appendix A1 (Appendix to the standard). This standard replaces VJ401-86 from now on. This standard is issued and managed by the National Tractor Standardization Technical Committee. The drafting units of this standard are: Luyang Fan Machinery Research Institute, Shandong Jining Wheel Factory, Shandong Longkou Steel Co., Ltd. The main drafters of this standard are: Ci Zuquan, Wang Xingsheng, Liang Zhishan. —Scope
China Machinery Industry Standard
Tractor and Agricultural and Forestry Machinery Wheels
Technical Conditions
Whels pftructorznd machinery foragrlcultoreand forestry-Specifications
JB/T 8887—1999
N4DI—Road 6
This standard specifies the technical requirements, inspection rules, marking, packaging, transportation and storage of wheels for tractors and agricultural and forestry machinery. This standard applies to wheels with pneumatic tires for tractors, agricultural transport vehicles, combine harvesters, agricultural trailers and other agricultural and forestry machinery. 2 Referenced Standards
The provisions contained in the following standards constitute the provisions of this standard by being referenced in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest version of the standard. OBIT 6991988
GR/T 700—1988
GRT 710—199F
GT 2828-1987
GB/T 2933--1995
GB/T 3372 -[969
GD/T34B7—1996|| tt | 14786--1993
T 3673 --[991
YB/T 039-1993
YB/T 040- -1993
3 Technical requirements
Technical conditions for high quality and accurate quality
Carbon structural steel
High quality carbon steel Hot-rolled thin steel plate and strip Batch inspection plan Sampling and sampling table (for inspection of continuous batches) Terms and specifications of wheels and rims for pneumatic tires Code and symbol Wheel series for tractors, agriculture and forestry machinery Specification series of automobile rims
Installation dimensions of wheels on hubs for agricultural and forestry tractors and machinery Actual installation dimensions of plate-type wheels for trucks on wheels Performance test method for truck wheels Sheath wheel Testing
Hot-rolled pins for automobile wheel rims
Lateral fatigue test method for wheels of tractors and agricultural and forestry machineryTorsion fatigue test method for wheels of tractors and agricultural and forestry machineryGeneral technical conditions for painting of agricultural and forestry tractors and implementsHot-rolled pins for automobile wheel rims
Hot-rolled steel for wheel lock rings of automobiles
3. The wheels of tractors and agricultural and forestry machinery shall comply with the requirements of the relevant standards and shall be in accordance with the product samples and technical documents approved through the prescribed procedures. 3.2 The terms, numbers, signs and measurement units of wheels and wheel rims shall comply with the provisions of GB 2933. Approved by the State Machinery Industry on August 6, 1999
Implementation on January 1, 2000
JB/F8887-1999
3.3 The shape and size of the wheel rim shall comply with the provisions of 0B/T3372. If automobile wheels are used, the wheel shape and size of the wheels shall comply with the provisions of GB/T3487.
3.4 The position and size of the wheel valve stem (groove) shall comply with the provisions of GB/T3372 and GB/T348. 3.5 The nominal diameter and deviation of the wheel steel, the circumference and deviation of the wheel rim when inspected with a ball tape ruler shall comply with the provisions of GB/T3372 and GB/T3487.
3.6 For wheels with a wheel width greater than or equal to 254mm (10), in order to prevent the tire from rotating relative to the wheel, the straight groove can be rolled on the tire rim seat, and its position and size shall comply with the short groove of GB3372. 3.7 The difference in the width of the two wheels of the plate wheel shall not exceed 1mm. 3. When the inner wind arc surface of the wheel is inspected with a sample (gauge), the difference between the open wheel (DT), deep sheath (DC) and deep groove wheel (WDC) shall not exceed 0.5mm; the maximum difference between the semi-deep groove wheel (SDC), flat bottom wheel (FB) and flat bottom wheel WFB) shall not exceed 2mm
3.5 The thickness reduction of the plate wheel after light rolling shall not exceed 15% of the actual material thickness, and no cracks are allowed. 3.10 There shall be no burrs and sharp edges on the wheel rim and both ends of the valve hole. The distance between the valve hole and the wheel weld shall not be less than 40mmM. 3.11 The recommended materials for the plate rim are 08A1, 08, 10 steel in GB699 and GB/T710, and Q195Q215 in GB/T700. The mechanical properties of steel plates and strips can also be selected: tensile strength of 315-41mN/mm2, elongation of 31%-35% of the sealing material station 3.12 The material of the steel wheel shall comply with the requirements of GB/T11262, YB/T039, and YB/T040. 3.13 The elasticity of the lock and elastic retaining wall shall be guaranteed after heat treatment. After the tension test [that is, gradually stretch to s0mm when both ends are in contact, after 10 cycles), the permanent deformation of the opening part shall be less than or equal to the nominal value of the wheel. The lock ring and elastic retainer with a diameter of 508mm (20in) shall not exceed 1.5mml + for the ring larger than the nominal diameter of 508mm (20in), it shall not exceed 2mm3.14 When checking the lock ring and elastic retainer on the inspection column, the clearance between the lock ring and the elastic retainer with a nominal diameter of less than or equal to 548mm (20) shall not exceed 1.5mm; the clearance between the lock ring and the elastic retainer with a nominal diameter greater than 508mm (20in) shall not exceed 2mm, and shall be reduced on both sides within a length of less than one-quarter of the circumference. 3.15 The distortion of the lock ring and the elastic retainer shall not exceed 2°3.16 When checking the rust ring, the flatness shall not exceed 2mm, and the gap shall be reduced on both sides within a length of not less than one-quarter of the circumference.
3.17 When inspected on the plate, the flatness shall not exceed 1.5tmm. 3.18 The number of bolt holes, the diameter of the bolt holes or nut seats, the position of the bolt holes or nut seats, the bolt hole diameter, the nut seat diameter, the center hole diameter, and the spoke support plane diameter of the spoke shall comply with the provisions of GB/T32. For truck wheel spokes, the installation dimensions shall comply with the provisions of GB/T4095.
3.19 The flatness of the spoke installation surface shall not exceed 0.5mm for wheels with a nominal diameter less than or equal to 406.4mm (16in); and not exceed 0.mm for wheels with a nominal diameter greater than 406.4mm (16in). 3.20 The spoke material is recommended to be Q235 in GB/T700 and 15.16Mn in GB/T699. Steel plates with mechanical properties: tensile strength 375-460N/mm, and elongation greater than 26% can also be used. 3.21 The tolerance of wheel assembly height or offset is not more than ±1mm for the nominal diameter of parallel rims (DF), grooved wheels (DC) and deep and wide wheels [WC.) less than or equal to 406.4mm (16mm); not more than ±1.5mm: semi-deep rim (SDC), flat rim (FB) and wide flat rim (WFR) are not more than ±1.5m: the conversion of the mid-wheel assembly height or the standard, see Appendix A (Standard Appendix). 2
JB/T8887-1999
3.22 The tire seat diameter, two-net runout, and wheel end face runout of the wheel and wheel auxiliary assembly assembly shall comply with the following provisions. 3.211 For the structure of the rim and wheel temporary connection, the measured runout shall not exceed 0.5% of the wheel calibration weight D. 3.22.2 For the structure of the wheel and wheel transmission support and nail connection, the measured runout shall not exceed 0.7% of the wheel calibration diameter D. 3.23 The welding seam shall be continuous, evenly connected and coal-through, and no leakage welding, burn-through, looseness and cracks are allowed. Weld droplets and spatters should be removed after welding. 3.24 The butt weld of the wheel assembly should be smooth and flat, and no sharp edges or rough materials that scrape the tire are allowed. The weld height of the wheel and the wheel rim mating surface should be flush with the wheel surface, and the outer weld height should not exceed 0.5mm from the wheel surface. 3.25 When the butt weld of the rim and the combined weld of the wheel and the spoke are tested on the wheel bench, within the specified fatigue life range, the weld is not allowed to open.
3.26 The coating of the wheel, spoke or wheel assembly should comply with the provisions of JB/T5673. It is recommended to use the quality index of TQ-2-1 heavy-duty protective coating in JB/T5673.
3.27 The bench fatigue strength of the wheel should comply with the following provisions. 3.27.1 The wheel fatigue strength test for wheels used in spreaders, combine harvesters and other agricultural machinery shall comply with the requirements of GB.T14785 and GB/T14786.
3.27.2 The wheel fatigue strength test for wheels used in agricultural transport vehicles and agricultural trailers shall comply with the requirements of GB/T1909: $Test method
4.1 Material inspection: The materials of wheels and wheel trailers shall comply with the requirements of this standard. Each batch of materials shall be inspected for size, chemical and physical analysis. The selection of materials and test methods shall be decided by the ordering unit and the wheel manufacturer through consultation. 4.2 Dimension inspection
4.2.1 The circumference of the nominal diameter of the wheel with a 3-degree rim shall be inspected with a ball tape measure. The inspection method shall be in accordance with the requirements of GBT9769.
4.2.2 The length of the nominal diameter of the flat wheel shall be inspected with a tape measure. The inspection tools and inspection methods shall comply with the provisions of GB/9769. 4.2.3 The wheel screen of the wheel shall be inspected with a sample (gauge), and the inspection tools and inspection methods shall comply with the provisions of GB/T9769. 4.2.4 The thinning amount of the wheel after rolling shall be inspected with a thickness gauge, and the measured wheel can also be measured after the section. 4.2.5 The bolt and end seat position of the wheel (centered by the center hole, spherical centering and conical centering) shall be inspected with a position gauge. The inspection tools and inspection methods shall comply with the provisions of the wheel end gauge. 4.2.6 The radial runout of the tire seat and the end face of the wheel of the rim and spoke assembly shall be inspected with an end diameter runout measuring instrument, and the inspection tools and inspection methods shall comply with the provisions of the wheel end diameter measuring instrument. 4.2.7 The flatness of the wheel mounting surface shall be inspected with a dial indicator or a thickness gauge on the inspection plate. 4.3 Inspection
The coating of the wheel shall comply with the provisions of this standard. Inspection shall be carried out according to the inspection method of /T5673. The materials used and the inspection requirements shall be determined by the ordering unit and the wheel manufacturer through consultation. 4.4 Welding inspection
The quality of the welding of the wheel shall comply with the provisions of this standard. 4.5 Inspection of external spokes
4.5.1 The valve hole () shall not have burrs or sharp edges that may be harmful to the inner tube, tire belt and valve. 4.5.2 The flange ends of the deep-thin rim (DC) and deep-thin wide rim (WDC) shall not have burrs and sharp edges that may be harmful to the installation and removal of the tire. JB/TS88—1999
4.5.3 The nails or points for installing the spokes shall not have sharp angles that may fit on the inner tube or tire belt. 4.5 The weld seams of the wheels shall be evenly stacked and free of harmful defects and scars such as undercuts, pores, pits, welds, and flying shots. 4.5.5 The paint shall be uniform in color and smooth, without exposing the bottom surface and without bubbles, peeling, barrel skin, obvious pitting, smearing, and paint flow.
4.6 Strength inspection
The fatigue strength of the wheels shall comply with the test methods and performance requirements of GB/T14785, GR/T14786, and GB/T5909. 5 Inspection rules
5.1 Delivery inspection
5.1.1 Each wheel shall be inspected by the manufacturer before it can be shipped out of the factory. The product must be accompanied by a certificate of conformity before it leaves the factory. 5.1.2 Visual inspection Each wheel shall comply with the provisions of 3.23, 324, and 326. 5.1.3 Inspection The inspection circumference of each rim and the end face and radial circumference of the wheel shall comply with the provisions of 3.5 and 3.22. 5.2 Type inspection
5.2.1 When a batch of wheel products is subjected to type inspection, 5 wheels shall be randomly selected from the qualified products and inspected in accordance with the provisions of 3.3 to 3.27:
5.2.2 When a new product or a product after major improvement is subjected to type inspection, the test items and the number of test samples shall be the same as those specified in 5.2.1. 5.2.3 The manufacturer has the right to conduct random inspection on the received products. The random inspection items may be optional. The sample size, integration level and verification level shall be in accordance with the provisions of GB/T228. The sampling plan and judgment criteria may be based on the quality classification standard of the product or may be agreed upon by the supply and demand parties.
6 Marking, packaging, transportation and storage
6.1 Marking
The following content shall be engraved in a conspicuous position on the outside of the rim or spoke as a mark. The font size should not be less than 3mm and should be clearly visible after installation. 1. The wheel should be clearly visible after installation. 2. The manufacturer or trademark, the year and month of manufacture, 6.7.2 Wheel specifications, for example: 16×4.00E. 6.2 Wheel packaging and transportation. Wheel packaging can be in racks, cartons, bags, containers, or in bulk. The specific packaging materials and methods shall be determined by negotiation with the user. It should be ensured that the wheels will not be damaged or the appearance of the packaging will not be damaged during loading and transportation. 6.3 Storage. Wheel products should be stored in a ventilated and dry warehouse. Under the condition of proper storage, the manufacturer should ensure that the products will be in good condition from the date of leaving the factory. No rust or paint peeling within one year JE/T 888T-1999
Appendix A
(Appendix to the standard)
Conversion of wheel assembly height and offset
Conversion of wheel assembly height or offset for open wheel rims (Formula (A1) and Figure A1.A1
Wheel center
Figure A1 Wheels with paired rims
A2 Conversion of wheel assembly height or offset for integral wheel rims (Formula (A2) and Figure A2). FEE-
Center
Figure A2 Wheel with integral rim
For the calculation of the assembly sound or offset of multi-piece wheel (single wheel), see formula (A3) and Figure A3A3
FE-(C+B)
-(A1)
Adjustment center
JB/T8887-1999
Figure A3 Wheel with multi-piece rim, similar to single wheel A4 Multi-piece rim For the conversion of assembly height or offset of the auxiliary wheel (double wheel), see formula (A4) and Figure A4, F=E-8
center diameter of the standard wheel
Figure A4. For the wheels of multi-piece wheel vehicles, use the following double wheel notes: In formula (A1)-(A4i:
F—offset;
only—wheel gauge:
wheel bundle ticket
assembly height:
B half of the wheel gauge:
, a, c: F actual measured scale.27 The test bench fatigue strength of wheels shall comply with the following provisions. 3.27.1 For wheels used in spreaders, combine harvesters and other agricultural machinery, the wheel fatigue strength test shall comply with the provisions of GB.T14785 and GB/T14786.
3.27.2 For wheels used in agricultural transport vehicles and agricultural trailers, the wheel fatigue strength test shall comply with the provisions of GB/T1909: $Test method
4.1 Material inspection: The materials of wheels and wheel trailers shall comply with the provisions of this standard. Each batch of materials shall be inspected for size and chemical and physical analysis. The selection of materials and test methods shall be decided by the ordering unit and the wheel manufacturer through consultation. 4.2 Dimension inspection
4.2.1 The circumference of the calibrated diameter of the wheel with a 3-degree rim shall be inspected with a ball tape measure. The inspection method shall be in accordance with the provisions of GBT9769.
4.2.2 Check the length of the calibrated diameter of the flat wheel with a tape measure. The inspection tools and inspection methods shall comply with the provisions of GB/9769. 4.2.3 Check the wheel plate with a sample (gauge). The inspection tools and inspection methods shall comply with the provisions of GB/T9769. 4.2.4 Check the thinning amount of the wheel after rolling with a thickness gauge. The measured wheel can also be measured after the section. 4.2.5 Check the bolt and end seat position of the wheel (centered by center hole, spherical centering and conical centering) with a position gauge. The inspection tools and inspection methods shall comply with the provisions of the wheel end gauge. 4.2.6 The radial runout of the tire seat and the end face of the wheel of the rim and spoke assembly shall be checked with an end diameter runout measuring instrument. The inspection tools and inspection methods shall comply with the provisions of the wheel end diameter measuring instrument. 4.2.7 The flatness of the wheel mounting surface shall be checked on the inspection plate with a dial indicator or thickness gauge. 4.3 Inspection
The coating of the wheel shall comply with the provisions of this standard. Inspection shall be carried out according to the inspection method of /T5673. The materials used and the inspection requirements shall be determined by negotiation between the ordering unit and the wheel manufacturer. 4.4 Welding inspection
The quality of the wheel joint shall comply with the provisions of this standard. 4.5 External flower inspection
4.5.1 The valve hole () shall not have burrs or sharp edges that are harmful to the inner tube, tire belt and valve. 4.5.2 There shall be no burrs or sharp edges that are harmful to the installation and removal of the tire at the end of the deep-thin rim (DC) and deep-thin wide rim (WDC) JB/TS88-1999
4.5.3 The nails or points of the spoke installation shall not have sharp angles that fit on the inner tube or tire belt. 4.5 The weld seams of the wheels shall be evenly stacked and free of harmful defects and scars such as undercuts, pores, pits, welds, and flying shots. 4.5.5 The paint shall be uniform in color and smooth, without exposing the bottom surface and without bubbles, peeling, barrel skin, obvious pitting, smearing, and paint flow.
4.6 Strength inspection
The fatigue strength of the wheels shall comply with the test methods and performance requirements of GB/T14785, GR/T14786, and GB/T5909. 5 Inspection rules
5.1 Delivery inspection
5.1.1 Each wheel shall be inspected by the manufacturer before it can be shipped out of the factory. The product must be accompanied by a certificate of conformity before it leaves the factory. 5.1.2 Visual inspection Each wheel shall comply with the provisions of 3.23, 324, and 326. 5.1.3 Inspection The inspection circumference of each rim and the end face and radial circumference of the wheel shall comply with the provisions of 3.5 and 3.22. 5.2 Type inspection
5.2.1 When a batch of wheel products is subjected to type inspection, 5 wheels shall be randomly selected from the qualified products and inspected in accordance with the provisions of 3.3 to 3.27:
5.2.2 When a new product or a product after major improvement is subjected to type inspection, the test items and the number of test samples shall be the same as those specified in 5.2.1. 5.2.3 The manufacturer has the right to conduct random inspection on the received products. The random inspection items may be optional. The sample size, integration level and verification level shall be in accordance with the provisions of GB/T228. The sampling plan and judgment criteria may be based on the quality classification standard of the product or may be agreed upon by the supply and demand parties.
6 Marking, packaging, transportation and storage
6.1 Marking
The following content shall be engraved in a conspicuous position on the outside of the rim or spoke as a mark. The font size should not be less than 3mm and should be clearly visible after installation. 1. The wheel should be made by manufacturer or trademark, year and month of manufacture, 6.7.2 Wheel specifications, for example: 16×4.00E. 6.2 Wheel packaging and transportation
Wheels can be packaged in racks, cartons, bags, containers, or in bulk. The specific packaging materials and methods shall be determined through consultation with the user. It should be ensured that the wheels will not be damaged or the appearance of the wheels will not be damaged during loading and unloading. 6.3 Storage
Wheel products should be stored in a ventilated and dry warehouse. Under the condition of proper storage, the manufacturer should ensure that the products will be in good condition from the date of leaving the factory! No rust or paint peeling within one year JE/T 888T-1999
Appendix A
(Appendix to the standard)
Conversion of wheel assembly height and offset
Conversion of wheel assembly height or offset for open wheel rims (Formula (A1) and Figure A1.A1
Wheel center
Figure A1 Wheels with paired rims
A2 Conversion of wheel assembly height or offset for integral wheel rims (Formula (A2) and Figure A2). FEE-
Center
Figure A2 Wheel with integral rim
For the calculation of the assembly sound or offset of multi-piece wheel (single wheel), see formula (A3) and Figure A3A3
FE-(C+B)
-(A1)
Adjustment center
JB/T8887-1999
Figure A3 Wheel with multi-piece rim, similar to single wheel A4 Multi-piece rim For the conversion of assembly height or offset of the auxiliary wheel (double wheel), see formula (A4) and Figure A4, F=E-8
center diameter of the standard wheel
Figure A4. For the wheels of multi-piece wheel vehicles, use the following double wheel notes: In formula (A1)-(A4i:
F—offset;
only—wheel gauge:
wheel bundle ticket
assembly height:
B half of the wheel gauge:
, a, c: F actual measured scale.27 The test bench fatigue strength of wheels shall comply with the following provisions. 3.27.1 For wheels used in spreaders, combine harvesters and other agricultural machinery, the wheel fatigue strength test shall comply with the provisions of GB.T14785 and GB/T14786.
3.27.2 For wheels used in agricultural transport vehicles and agricultural trailers, the wheel fatigue strength test shall comply with the provisions of GB/T1909: $Test method
4.1 Material inspection: The materials of wheels and wheel trailers shall comply with the provisions of this standard. Each batch of materials shall be inspected for size and chemical and physical analysis. The selection of materials and test methods shall be decided by the ordering unit and the wheel manufacturer through consultation. 4.2 Dimension inspection
4.2.1 The circumference of the calibrated diameter of the wheel with a 3-degree rim shall be inspected with a ball tape measure. The inspection method shall be in accordance with the provisions of GBT9769.
4.2.2 Check the length of the calibrated diameter of the flat wheel with a tape measure. The inspection tools and inspection methods shall comply with the provisions of GB/9769. 4.2.3 Check the wheel plate with a sample (gauge). The inspection tools and inspection methods shall comply with the provisions of GB/T9769. 4.2.4 Check the thinning amount of the wheel after rolling with a thickness gauge. The measured wheel can also be measured after the section. 4.2.5 Check the bolt and end seat position of the wheel (centered by center hole, spherical centering and conical centering) with a position gauge. The inspection tools and inspection methods shall comply with the provisions of the wheel end gauge. 4.2.6 The radial runout of the tire seat and the end face of the wheel of the rim and spoke assembly shall be checked with an end diameter runout measuring instrument. The inspection tools and inspection methods shall comply with the provisions of the wheel end diameter measuring instrument. 4.2.7 The flatness of the wheel mounting surface shall be checked on the inspection plate with a dial indicator or thickness gauge. 4.3 Inspection
The coating of the wheel shall comply with the provisions of this standard. Inspection shall be carried out according to the inspection method of /T5673. The materials used and the inspection requirements shall be determined by negotiation between the ordering unit and the wheel manufacturer. 4.4 Welding inspection
The quality of the wheel joint shall comply with the provisions of this standard. 4.5 External flower inspection
4.5.1 The valve hole () shall not have burrs or sharp edges that are harmful to the inner tube, tire belt and valve. 4.5.2 There shall be no burrs or sharp edges that are harmful to the installation and removal of the tire at the end of the deep-thin rim (DC) and deep-thin wide rim (WDC) JB/TS88-1999
4.5.3 The nails or points of the spoke installation shall not have sharp angles that fit on the inner tube or tire belt. 4.5 The weld seams of the wheels shall be evenly stacked and free of harmful defects and scars such as undercuts, pores, pits, welds, and flying shots. 4.5.5 The paint shall be uniform in color and smooth, without exposing the bottom surface and without bubbles, peeling, barrel skin, obvious pitting, smearing, and paint flow.
4.6 Strength inspection
The fatigue strength of the wheels shall comply with the test methods and performance requirements of GB/T14785, GR/T14786, and GB/T5909. 5 Inspection rules
5.1 Delivery inspection
5.1.1 Each wheel shall be inspected by the manufacturer before it can be shipped out of the factory. The product must be accompanied by a certificate of conformity before it leaves the factory. 5.1.2 Visual inspection Each wheel shall comply with the provisions of 3.23, 324, and 326. 5.1.3 Inspection The inspection circumference of each rim and the end face and radial circumference of the wheel shall comply with the provisions of 3.5 and 3.22. 5.2 Type inspection
5.2.1 When a batch of wheel products is subjected to type inspection, 5 wheels shall be randomly selected from the qualified products and inspected in accordance with the provisions of 3.3 to 3.27:
5.2.2 When a new product or a product after major improvement is subjected to type inspection, the test items and the number of test samples shall be the same as those specified in 5.2.1. 5.2.3 The manufacturer has the right to conduct random inspection on the received products. The random inspection items may be optional. The sample size, integration level and verification level shall be in accordance with the provisions of GB/T228. The sampling plan and judgment criteria may be based on the quality classification standard of the product or may be agreed upon by the supply and demand parties.
6 Marking, packaging, transportation and storage
6.1 Marking
The following content shall be engraved in a conspicuous position on the outside of the rim or spoke as a mark. The font size should not be less than 3mm and should be clearly visible after installation. 1. The wheel should be made by manufacturer or trademark, year and month of manufacture, 6.7.2 Wheel specifications, for example: 16×4.00E. 6.2 Wheel packaging and transportation
Wheels can be packaged in racks, cartons, bags, containers, or in bulk. The specific packaging materials and methods shall be determined through consultation with the user. It should be ensured that the wheels will not be damaged or the appearance of the wheels will not be damaged during loading and unloading. 6.3 Storage
Wheel products should be stored in a ventilated and dry warehouse. Under the condition of proper storage, the manufacturer should ensure that the products will be in good condition from the date of leaving the factory! No rust or paint peeling within one year JE/T 888T-1999
Appendix A
(Appendix to the standard)
Conversion of wheel assembly height and offset
Conversion of wheel assembly height or offset for open wheel rims (Formula (A1) and Figure A1.A1
Wheel center
Figure A1 Wheels with paired rims
A2 Conversion of wheel assembly height or offset for integral wheel rims (Formula (A2) and Figure A2). FEE-
Center
Figure A2 Wheel with integral rim
For the calculation of the assembly sound or offset of multi-piece wheel (single wheel), see formula (A3) and Figure A3A3
FE-(C+B)
-(A1)
Adjustment center
JB/T8887-1999
Figure A3 Wheel with multi-piece rim, similar to single wheel A4 Multi-piece rim For the conversion of assembly height or offset of the auxiliary wheel (double wheel), see formula (A4) and Figure A4, F=E-8
center diameter of the standard wheel
Figure A4. For the wheels of multi-piece wheel vehicles, use the following double wheel notes: In formula (A1)-(A4i:
F—offset;
only—wheel gauge:
wheel bundle ticket
assembly height:
B half of the wheel gauge:
, a, c: F actual measured scale.6 Strength inspection
The fatigue strength of the wheel shall be in accordance with the test methods and performance requirements of GB/T14785, GR/T14786 and GB/T5909. 5 Inspection rules
5.1 Delivery inspection
5.1.1 Each wheel shall be inspected and tested by the manufacturer before delivery. The product shall be accompanied by a certificate of conformity before delivery. 5.1.2 Visual inspection: Each wheel shall comply with the requirements of 3.23, 324 and 326. 5.1.3 Inspection: The inspection circumference of each rim and the end face and radial circular motion of the wheel shall comply with the requirements of 3.5 and 3.22. 5.2 Type inspection
5.2.1 When a batch of wheel products is subjected to type inspection, 5 wheels shall be randomly selected from the qualified products and inspected in accordance with the provisions of 3.3 to 3.27:
5.2.2 When a new product or a product after major improvement is subjected to type inspection, the test items and the number of test samples shall be the same as those specified in 5.2.1. 5.2.3 The manufacturer has the right to conduct random inspection on the received products. The random inspection items can be selected at will. The sample size, integration level and verification level shall be in accordance with the provisions of GB/T228. The sampling plan and judgment criteria may be based on the quality classification standard of the product or may be agreed upon by the supply and demand parties.
6 Marking, packaging, transportation and storage
6.1 Marking
The following content shall be engraved in a conspicuous position on the outside of the rim or spoke as a mark. The font size should not be less than 3mm and should be clearly visible after installation. 1. The wheel should be clearly visible after installation. 2. The manufacturer or trademark, the year and month of manufacture, 6.7.2 Wheel specifications, for example: 16×4.00E. 6.2 Wheel packaging and transportation. Wheel packaging can be in racks, cartons, bags, containers, or in bulk. The specific packaging materials and methods shall be determined by negotiation with the user. It should be ensured that the wheels will not be damaged or the appearance of the packaging will not be damaged during loading and transportation. 6.3 Storage. Wheel products should be stored in a ventilated and dry warehouse. Under the condition of proper storage, the manufacturer should ensure that the products will be in good condition from the date of leaving the factory. No rust or paint peeling within one year JE/T 888T-1999
Appendix A
(Appendix to the standard)
Conversion of wheel assembly height and offset
Conversion of wheel assembly height or offset for open wheel rims (Formula (A1) and Figure A1.A1
Wheel center
Figure A1 Wheels with paired rims
A2 Conversion of wheel assembly height or offset for integral wheel rims (Formula (A2) and Figure A2). FEE-
Center
Figure A2 Wheel with integral rim
For the calculation of the assembly sound or offset of multi-piece wheel (single wheel), see formula (A3) and Figure A3A3bZxz.net
FE-(C+B)
-(A1)
Adjustment center
JB/T8887-1999
Figure A3 Wheel with multi-piece rim, similar to single wheel A4 Multi-piece rim For the conversion of assembly height or offset of the auxiliary wheel (double wheel), see formula (A4) and Figure A4, F=E-8
center diameter of the standard wheel
Figure A4. For the wheels of multi-piece wheel vehicles, use the following double wheel notes: In formula (A1)-(A4i:
F—offset;
only—wheel gauge:
wheel bundle ticket
assembly height:
B half of the wheel gauge:
, a, c: F actual measured scale.6 Strength inspection
The fatigue strength of the wheel shall be in accordance with the test methods and performance requirements of GB/T14785, GR/T14786 and GB/T5909. 5 Inspection rules
5.1 Delivery inspection
5.1.1 Each wheel shall be inspected and tested by the manufacturer before delivery. The product shall be accompanied by a certificate of conformity before delivery. 5.1.2 Visual inspection: Each wheel shall comply with the requirements of 3.23, 324 and 326. 5.1.3 Inspection: The inspection circumference of each rim and the end face and radial circular motion of the wheel shall comply with the requirements of 3.5 and 3.22. 5.2 Type inspection
5.2.1 When a batch of wheel products is subjected to type inspection, 5 wheels shall be randomly selected from the qualified products and inspected in accordance with the provisions of 3.3 to 3.27:
5.2.2 When a new product or a product after major improvement is subjected to type inspection, the test items and the number of test samples shall be the same as those specified in 5.2.1. 5.2.3 The manufacturer has the right to conduct random inspection on the received products. The random inspection items can be selected at will. The sample size, integration level and verification level shall be in accordance with the provisions of GB/T228. The sampling plan and judgment criteria may be based on the quality classification standard of the product or may be agreed upon by the supply and demand parties.
6 Marking, packaging, transportation and storage
6.1 Marking
The following content shall be engraved in a conspicuous position on the outside of the rim or spoke as a mark. The font size should not be less than 3mm and should be clearly visible after installation. 1. The wheel should be clearly visible after installation. 2. The manufacturer or trademark, the year and month of manufacture, 6.7.2 Wheel specifications, for example: 16×4.00E. 6.2 Wheel packaging and transportation. Wheel packaging can be in racks, cartons, bags, containers, or in bulk. The specific packaging materials and methods shall be determined by negotiation with the user. It should be ensured that the wheels will not be damaged or the appearance of the packaging will not be damaged during loading and transportation. 6.3 Storage. Wheel products should be stored in a ventilated and dry warehouse. Under the condition of proper storage, the manufacturer should ensure that the products will be in good condition from the date of leaving the factory. No rust or paint peeling within one year JE/T 888T-1999
Appendix A
(Appendix to the standard)
Conversion of wheel assembly height and offset
Conversion of wheel assembly height or offset for open wheel rims (Formula (A1) and Figure A1.A1
Wheel center
Figure A1 Wheels with paired rims
A2 Conversion of wheel assembly height or offset for integral wheel rims (Formula (A2) and Figure A2). FEE-
Center
Figure A2 Wheel with integral rim
For the calculation of the assembly sound or offset of multi-piece wheel (single wheel), see formula (A3) and Figure A3A3
FE-(C+B)
-(A1)
Adjustment center
JB/T8887-1999
Figure A3 Wheel with multi-piece rim, similar to single wheel A4 Multi-piece rim For the conversion of assembly height or offset of the auxiliary wheel (double wheel), see formula (A4) and Figure A4, F=E-8
center diameter of the standard wheel
Figure A4. For the wheels of multi-piece wheel vehicles, use the following double wheel Note: In formula (A1)-(A4i:
F—offset;
only—wheel gauge:
wheel bundle ticket
assembly height:
B half of the wheel gauge:
, a, c: F actual measured scale.
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