This standard specifies the terminology, specification codes and markings for wheels and rims. The terminology and drawings are mainly used to define basic wheel and rim terms. This standard applies to wheels and rims used with pneumatic tires. GB/T 2933-1995 Terms, specification codes and markings for wheels and rims for pneumatic tires GB/T2933-1995 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Terms, specification codes and markings of wheels and rims for pneumatic tyres
Wheels/rims for pneumatic tyres-Nomenclature, designation and marking1 Subject content and scope of application
GB/T2933-1995
Replaces GB2933-82
This standard specifies the terms, specification codes and markings of wheels and rims. The terms and drawings are mainly used to define basic wheel and rim terms.
This standard applies to wheels and rims used for pneumatic tires. 2 Definitions
2.1 Wheel
A rotating part between the tire and the axle that bears loads. It usually consists of two main components: a. Rim;
b. Spokes.
The rim and spokes can be integral, permanently connected or detachable. 2.1.1 Rim
The component of a wheel that mounts and supports the tyre. 2.1.2 Spoke
The supporting component of a wheel between the axle and the rim. 2.1.3 Single wheel
A wheel that can only mount and support one tyre at one end of the axle (see Figure 1). 2.1.4 Double wheel
A wheel such as that shown in Figure 2, or a wheel with sufficient offset and the necessary profile shape, which, when two such wheels are mounted together, can support two tyres at one end of the axle. 2.1.5 Offset wheel
A wheel with the centre plane of the rim located inside the spoke mounting plane. The offset is the distance from the spoke mounting plane to the centre plane of the rim (see Figure 1a).
2.1.6 Zero offset wheel
A wheel with the centre plane of the rim and the spoke mounting plane coinciding (see Figure 1b). 2.1.7 Offset wheel
A wheel with the center plane of the rim located outside the spoke mounting plane. The offset is the distance from the spoke mounting plane to the center plane of the rim (see Figure 1c).
2.1.8 Twin center distance
When wheels are installed in pairs, the distance between the center planes of the two rims that form the required twin spacing (see Figures 2, 5 and 6). Approved by the State Administration of Technical Supervision on September 12, 199556
Implemented on March 1, 1996
2.2 Wheel types
2.2.1 Spoke-plate wheel
GB/T2933—1995
A wheel with a rim and spokes permanently combined (see Figures 1 and 2). Benben
Inner offset
Zero offset
Mounting surface
Nut seat
a. Inner offset wheel
Inner offset
b. Zero offset wheel
Outer offset
c. Outer offset wheel
Terminology of spoke-type wheels for passenger cars and light vehicles Hengzhong
Mounting surface
Outer surface of spoke
Nut seat
| Bolt hole
Dual wheel center distance
For dual tires
Figure 2 Terminology of spoked wheels for buses and trucks 2.2.2 Split wheels
The rim is a wheel consisting of two main parts. The rims on the two parts may have equal or unequal widths. Fastening them together forms a rim with two fixed flanges (see Figure 3). 57
2.2.3 Spoke wheels
GB/T 2933—1995
Fixing the wheel rim
Clamping bolts or
Appropriate mechanical means
Mounting surface
Outer offset
Figure 3 Terminology of split wheels
Wheel whose rim is connected to the hub by a number of spokes (see Figure 4). Wheel
Inner offset
(spoke wheel) Wheel
2.2.4 Assembling rim-type wheels
2.2.4.128°Installing beveled wheels
(spoke wheel) Wheel Hub
Inner offset
Figure 4 Spoke wheel terminology
For tightening nut
Conical seat
A wheel with one or two assembled rims clamped to a cast hub with a 28° mounting bevel. This hub is also used as a support hub for brake drums or brake discs (see Figure 5). 58
Outer offset
GB/T2933—1995
Figure 528° mounting bevel wheel terminology
①Inner bearing seat shoulder (reference surface);②Rim mounting bevel Position, ③ rim body offset; rim width, double wheel center distance; ③ wheel bevel offset,? cast wheel hub; ③ clamping block 2.2.4.2 18°~15° mounting bevel wheel, the sub-rim structure is one or two assembled rims clamped to a cast wheel hub with an 18°~15° mounting bevel (see Figure 6). Adjustment
Inner offset
Figure 6 18°15° mounting bevel wheel terminology
①Inner bearing seat shoulder (reference surface) ②Rim mounting bevel position,? rim body offset; ④Spacer width; ③Dual wheel center ③ Casting hub, central clamp 2.2.5 Reversible wheel
Both sides of the spoke can be used as mounting surfaces, thus becoming a wheel with inner offset (narrow wheel track) or outer offset (wide wheel track) (see Figure 7). 59
2.2.6 Adjustable wheel
Mounting surface
Inner offset
GB/T2933—1995
Mounting surface
Figure 7 Reversible wheel terminology
Outer offset
Wheel whose rim can change its axial position relative to the spoke. The adjustment method can be manual adjustment or power adjustment (see Figure 8). The total adjustment amount of the positive and negative mounted wheel
a. b. Power adjustment
Figure 8 Adjustable wheel terms
2.3 Rim terms
Guofeng (RH)
2.3.1 Rim
Double peak (H2)
GB/T 2933
Optional tire seat
Seat frame (SL)
Flat bee (FH)
Figure 9 Rim profile terms
The part of the rim that provides axial support for the tire (see A, B, G, R2, R in Figure 9). 2.3.2 Bead seat
The part of the rim that provides radial support for the tire (see D, P, β, R: in Figure 9). R
Rim nominal width
Flange width
Flange circle radius position
Wheel rest nominal diameter
Valve hole position
(For reference)
Flange height
Groove bottom depth
Seat depthbZxz.net
Groove bottom width
Groove position
Bead seat width
Flange transition arc radius
Flange Arc radius
Bead seat fillet radius
Groove top fillet radius
Groove bottom fillet radius
Rim end fillet radius
Lock ring groove
Lock ring groove top
Valve hole
Groove angle
Bead seat angle
Crossing (CP)
Combined peak (CH)
2.3.3″ rim groove
GB/T 2933—1995
The bottom of the rim has a groove of sufficient depth and width to allow the tire bead to pass over the rim and bead seat slope on the rim installation side for installation or removal (see R, α, M, H, L, R, in Figure 9). 2.3.4 Valve hole
The hole or groove on the rim for installing the tire inflation valve (see V, F in Figure 9). 2.3.5 Locking ring groove
The groove on the rim body for placing the locking ring or elastic retaining ring and limiting it with the top of the groove (see S, T in Figure 9). 2.3.6 Rim body
The main part of the rim (see Figure 1 1～14). 2.3.7 Retaining ring
A wheel rim that can be removed from the rim; a retaining ring that can act as a locking ring is called an elastic retaining ring (see Figures 11～14). 2.3.8 Locking ring
An elastic ring that is located in the locking ring groove and has a locking effect on the retaining ring or seat ring (see Figures 12～14). 2.3.9 Seat ring
A bead seat that can be removed from the rim body (see Figures 12～14). 2.3.10 Angle seat retaining ring
A retaining ring with a bead seat and having the dual functions of retaining ring and seat ring (see Figure 12). 2.4 Rim type
2.4.1-piece (deep groove) rim
One-piece structural rim with rim groove (see Figure 10). Passenger car 5DC
Agricultural machinery 5°DC
Truck 15°DC
Low-bed trailer 15°DC
Terms of one-piece (deep groove) rim (typical) 62
2.4.2 Two-piece rim
GB/T2933—1995
Rim that can be disassembled into two main parts (excluding seals, the same below, see Figure 11). Circlip
Sheath body
Circlip
Rim body
2.4.3 Three-piece rim
Terms of two-piece rim
Rim that can be disassembled into three main parts (see Figure 12). Retaining ring
Rim body
Split rim
2.4.4 Four-piece rim
Lock ring frame
18°15°bevel
Rim body
Rim body
Figure 12 Terminology for three-piece rim
A rim that can be disassembled into four main parts (see Figure 13). Locking groove
Locking groove
Lock ring groove
Locking groove
2.4.5 Five-piece rim
Sheath body
GB/T2933
—1995
Lock ring groove
Lock ring groove
Figure 13 Terminology of four-piece rim
A rim that can be disassembled into five main parts (see Figure 14). Honey figure
Rim body
Figure 14 Terminology of five-piece rim
3 Specification codes of wheels and rims
The specification codes of wheels or rims shall be expressed in numerical symbols in the following preferred order: 3.1 Nominal rim diameter
Existing rims are expressed in size codes (inch values); new rims used with new metric tires are expressed in mm. 3.2 Rim type
“×” indicates a one-piece rim;
“_” indicates a multi-piece rim.
3.3 Nominal rim width
Rim designs currently are indicated by size codes (inch values); rims designed in the future will be indicated by mm. 3.4 Rim shape
One or more letters are used to indicate the rim profile of the rim (such as: B, J, K, C, D, E and F), which are usually placed after the nominal rim width. When there is 64
GB/T 2933—1995
, they are also placed before, on both sides of the nominal rim width or not used. The symbol “/” followed by one or more numbers indicates the rim height indicated by the size code for non-road vehicle rims (optional).
3.5 Specification code example (existing rim type) Passenger car: 10X3.50C
15×6J
Light truck, 15×51/2J
16. 5 X 6. 00
15-5. 50 F SDC
(SDC means half-deep groove rim)
Medium and heavy passenger and freight vehicles: 20-7.5
22-8. 00 V
22. 5 X 8.25
Agricultural machinery: 28×W12
28 X W10 H
26 X DW16
(DW means the rim has a second groove)
Non-road vehicles: 25-13.00/2.5
(/2.5 wheel rim code is optional)
4 Marking
4.1 Marking content
4.1.1 Spoke-type wheels and assembled rims Spoke-type wheels and assembled rims shall be marked with the following content: a.
Rim specification code;
Mark of the wheel and rim manufacturer;
Date of production;
Part number or code of the wheel and rim manufacturer. d.
4.1.2 Retaining ring marking
Retaining rings shall be marked with the following content:
Mark of the matching rim;
Mark of the manufacturer.
4.1.3 Split wheels
Both parts of a split wheel shall be marked in accordance with 4.1.1. 4.2 Marking method
4.2.1 Form
The marking shall be permanently concave or convex and shall have no sharp edges. The Roman letters and Arabic numerals shall be clear and shall not be less than 3 mm.
4.2.2 Location
The marking of wheels and assembled rims shall be visible after the tyre has been assembled. The marking of spoked wheels may appear on the rim or on the spokes.
4.3 Others
In addition to the marking described in 4.1, some other information may also be marked, such as legal or customer requirements. When the offset, inner offset or outer offset is to be marked, it is recommended to use the following codes: 65
OS represents offset (e.g. OS175)
b.IS represents inner offset (e.g. IS30)
IS- represents outer offset (e.g. IS-15)
GB/T2933—1995
Single wheel
Double wheel
Inner offset
Zero offset
Outer offset
Double wheel center distance
Mounting surface
Mounting surface diameter||tt ||Wheel type
Spoke wheel
Spoke wheel
Assembled rim wheel
Reversible wheel
Adjustable wheel
Rim body
Fixed rim
Rim height
Rim width
Rim arc radius
Rim end fillet radius
Rim transition arc radius
Rim arc radius position
Bead seat
Bead seat angle
. bead seat width
bead seat fillet radius
selectable bead seat profiles
group and bee (CH)
flat peak (FH)
round peak (RH)
double peak (H2)
GB/T2933—1995
Appendix A
Chinese and English terms correspondence
(reference)
single wheel
dual wheel
zeroset
outset
dual spacing
attachment face
attachment face diameter
wheel types
disc wheel
divided wheel
wire wheel
demountable rim wheel
reversible wheel | | tt | seat angle
bead seat width
bead seat radius
bead seat optional contourscombination hump(CH)
flat hump(FH)
round hump(RH)
double hump(H2)3 Three-piece rim
Terminology for two-piece rim
A rim that can be disassembled into three main parts (see Figure 12). Retaining ring
Rim body
Split rim
2.4.4 Four-piece rim
Lock ring frame
18°15°bevel
Rim body
Rim body
Figure 12 Terminology for three-piece rim
A rim that can be disassembled into four main parts (see Figure 13). Locking groove
Locking groove
Lock ring groove
Locking groove
2.4.5 Five-piece rim
Sheath body
GB/T2933
—1995
Lock ring groove
Lock ring groove
Figure 13 Terminology of four-piece rim
A rim that can be disassembled into five main parts (see Figure 14). Honey figure
Rim body
Figure 14 Terminology of five-piece rim
3 Specification codes of wheels and rims
The specification codes of wheels or rims shall be expressed in numerical symbols in the following preferred order: 3.1 Nominal rim diameter
Existing rims are expressed in size codes (inch values); new rims used with new metric tires are expressed in mm. 3.2 Rim type
“×” indicates a one-piece rim;
“_” indicates a multi-piece rim.
3.3 Nominal rim width
Rim designs currently are indicated by size codes (inch values); rims designed in the future will be indicated by mm. 3.4 Rim shape
One or more letters are used to indicate the rim profile of the rim (such as: B, J, K, C, D, E and F), which are usually placed after the nominal rim width. When there is 64
GB/T 2933—1995
, they are also placed before, on both sides of the nominal rim width or not used. The symbol “/” followed by one or more numbers indicates the rim height indicated by the size code for non-road vehicle rims (optional).
3.5 Specification code example (existing rim type) Passenger car: 10X3.50C
15×6J
Light truck, 15×51/2J
16. 5 X 6. 00
15-5. 50 F SDC
(SDC means half-deep groove rim)
Medium and heavy passenger and freight vehicles: 20-7.5
22-8. 00 V
22. 5 X 8.25
Agricultural machinery: 28×W12
28 X W10 H
26 X DW16
(DW means the rim has a second groove)
Non-road vehicles: 25-13.00/2.5
(/2.5 wheel rim code is optional)
4 Marking
4.1 Marking content
4.1.1 Spoke-type wheels and assembled rims Spoke-type wheels and assembled rims shall be marked with the following content: a.
Rim specification code;
Mark of the wheel and rim manufacturer;
Date of production;
Part number or code of the wheel and rim manufacturer. d.
4.1.2 Retaining ring marking
Retaining rings shall be marked with the following content:
Mark of the matching rim;
Mark of the manufacturer.
4.1.3 Split wheels
Both parts of a split wheel shall be marked in accordance with 4.1.1. 4.2 Marking method
4.2.1 Form
The marking shall be permanently concave or convex and shall have no sharp edges. The Roman letters and Arabic numerals shall be clear and shall not be less than 3 mm.
4.2.2 Location
The marking of wheels and assembled rims shall be visible after the tyre has been assembled. The marking of spoked wheels may appear on the rim or on the spokes.
4.3 Others
In addition to the marking described in 4.1, some other information may also be marked, such as legal or customer requirements. When the offset, inner offset or outer offset is to be marked, it is recommended to use the following codes: 65
OS represents offset (e.g. OS175)
b.IS represents inner offset (e.g. IS30)
IS- represents outer offset (e.g. IS-15)
GB/T2933—1995
Single wheel
Double wheel
Inner offset
Zero offset
Outer offset
Double wheel center distance
Mounting surface
Mounting surface diameter||tt ||Wheel type
Spoke wheel
Spoke wheel
Assembled rim wheel
Reversible wheel
Adjustable wheel
Rim body
Fixed rim
Rim height
Rim width
Rim arc radius
Rim end fillet radius
Rim transition arc radius
Rim arc radius position
Bead seat
Bead seat angle
. bead seat width
bead seat fillet radius
selectable bead seat profiles
group and bee (CH)
flat peak (FH)
round peak (RH)
double peak (H2)
GB/T2933—1995
Appendix A
Chinese and English terms correspondence
(reference)
single wheel
dual wheel
zeroset
outset
dual spacing
attachment face
attachment face diameter
wheel types
disc wheel
divided wheel
wire wheel
demountable rim wheel
reversible wheel | | tt | seat angle
bead seat width
bead seat radius
bead seat optional contourscombination hump(CH)
flat hump(FH)
round hump(RH)
double hump(H2)3 Three-piece rim
Terminology for two-piece rim
A rim that can be disassembled into three main parts (see Figure 12). Retaining ring
Rim body
Split rim
2.4.4 Four-piece rim
Lock ring frame
18°15°bevel
Rim body
Rim body
Figure 12 Terminology for three-piece rim
A rim that can be disassembled into four main parts (see Figure 13). Locking groove
Locking groove
Lock ring groove
Locking groove
2.4.5 Five-piece rim
Sheath body
GB/T2933
—1995
Lock ring groove
Lock ring groove
Figure 13 Terminology of four-piece rim
A rim that can be disassembled into five main parts (see Figure 14). Honey figure
Rim body
Figure 14 Terminology of five-piece rim
3 Specification codes of wheels and rims
The specification codes of wheels or rims shall be expressed in numerical symbols in the following preferred order: 3.1 Nominal rim diameter
Existing rims are expressed in size codes (inch values); new rims used with new metric tires are expressed in mm. 3.2 Rim type
“×” indicates a one-piece rim;
“_” indicates a multi-piece rim.
3.3 Nominal rim width
Rim designs currently are indicated by size codes (inch values); rims designed in the future will be indicated by mm. 3.4 Rim shape
One or more letters are used to indicate the rim profile of the rim (such as: B, J, K, C, D, E and F), which are usually placed after the nominal rim width. When there is 64
GB/T 2933—1995
, they are also placed before, on both sides of the nominal rim width or not used. The symbol “/” followed by one or more numbers indicates the rim height indicated by the size code for non-road vehicle rims (optional).
3.5 Specification code example (existing rim type) Passenger car: 10X3.50C
15×6J
Light truck, 15×51/2J
16. 5 X 6. 00
15-5. 50 F SDC
(SDC means half-deep groove rim)
Medium and heavy passenger and freight vehicles: 20-7.5
22-8. 00 V
22. 5 X 8.25
Agricultural machinery: 28×W12
28 X W10 H
26 X DW16
(DW means the rim has a second groove)
Non-road vehicles: 25-13.00/2.5
(/2.5 wheel rim code is optional)
4 Marking
4.1 Marking content
4.1.1 Spoke-type wheels and assembled rims Spoke-type wheels and assembled rims shall be marked with the following content: a.
Rim specification code;
Mark of the wheel and rim manufacturer;
Date of production;
Part number or code of the wheel and rim manufacturer. d.
4.1.2 Retaining ring marking
Retaining rings shall be marked with the following content:
Mark of the matching rim;
Mark of the manufacturer.
4.1.3 Split wheels
Both parts of a split wheel shall be marked in accordance with 4.1.1. 4.2 Marking method
4.2.1 Form
The marking shall be permanently concave or convex and shall have no sharp edges. The Roman letters and Arabic numerals shall be clear and shall not be less than 3 mm.
4.2.2 Location
The marking of wheels and assembled rims shall be visible after the tyre has been assembled. The marking of spoked wheels may appear on the rim or on the spokes.
4.3 Others
In addition to the marking described in 4.1, some other information may also be marked, such as legal or customer requirements. When the offset, inner offset or outer offset is to be marked, it is recommended to use the following codes: 65
OS represents offset (e.g. OS175)
b.IS represents inner offset (e.g. IS30)
IS- represents outer offset (e.g. IS-15)
GB/T2933—1995
Single wheel
Double wheel
Inner offset
Zero offset
Outer offset
Double wheel center distance
Mounting surface
Mounting surface diameter||tt ||Wheel type
Spoke wheel
Spoke wheel
Assembled rim wheel
Reversible wheel
Adjustable wheel
Rim body
Fixed rim
Rim height
Rim width
Rim arc radius
Rim end fillet radius
Rim transition arc radius
Rim arc radius position
Bead seat
Bead seat angle
. bead seat width
bead seat fillet radius
selectable bead seat profiles
group and bee (CH)
flat peak (FH)
round peak (RH)
double peak (H2)
GB/T2933—1995
Appendix A
Chinese and English terms correspondence
(reference)
single wheel
dual wheel
zeroset
outset
dual spacing
attachment face
attachment face diameter
wheel types
disc wheel
divided wheel
wire wheel
demountable rim wheel
reversible wheel | | tt | seat angle
bead seat width
bead seat radius
bead seat optional contourscombination hump(CH)
flat hump(FH)
round hump(RH)
double hump(H2)1 Nominal rim diameter
Existing rims are indicated by size codes (in inches); new rims for new metric tires are indicated by mm. 3.2 Rim type
"×" indicates a one-piece rim;
"_" indicates a multi-piece rim.
3.3 Nominal rim width
Rims currently designed are indicated by size codes (in inches); rims designed in the future using the metric system are indicated by mm. 3.4 Rim shape
One or more letters are used to indicate the rim profile of the rim (such as: B, J, K, C, D, E and F), which are usually placed after the nominal rim width. When there is 64
GB/T 2933—1995
, they are also placed before, on both sides of the nominal rim width or not used. The symbol "/" followed by one or more numbers indicates the rim height indicated by the size code for non-road vehicle rims (optional).
3.5 Specification code example (existing rim type) Passenger car: 10X3.50C
15×6J
Light truck, 15×51/2J
16. 5 X 6. 00
15-5. 50 F SDC
(SDC means half-deep groove rim)
Medium and heavy passenger and freight vehicles: 20-7.5
22-8. 00 V
22. 5 X 8.25
Agricultural machinery: 28×W12
28 X W10 H
26 X DW16
(DW means the rim has a second groove)
Non-road vehicles: 25-13.00/2.5
(/2.5 wheel rim code is optional)
4 Marking
4.1 Marking content
4.1.1 Spoke-type wheels and assembled rims Spoke-type wheels and assembled rims shall be marked with the following content: a.
Rim specification code;
Mark of the wheel and rim manufacturer;
Date of production;
Part number or code of the wheel and rim manufacturer. d.
4.1.2 Retaining ring marking
Retaining rings shall be marked with the following content:
Mark of the matching rim;
Mark of the manufacturer.
4.1.3 Split wheels
Both parts of a split wheel shall be marked in accordance with 4.1.1. 4.2 Marking method
4.2.1 Form
The marking shall be permanently concave or convex and shall have no sharp edges. The Roman letters and Arabic numerals shall be clear and shall not be less than 3 mm.
4.2.2 Location
The marking of wheels and assembled rims shall be visible after the tyre has been assembled. The marking of spoked wheels may appear on the rim or on the spokes.
4.3 Others
In addition to the marking described in 4.1, some other information may also be marked, such as legal or customer requirements. When the offset, inner offset or outer offset is to be marked, it is recommended to use the following codes: 65
OS represents offset (e.g. OS175)
b.IS represents inner offset (e.g. IS30)
IS- represents outer offset (e.g. IS-15)
GB/T2933—1995
Single wheel
Double wheel
Inner offset
Zero offset
Outer offset
Double wheel center distance
Mounting surface
Mounting surface diameter||tt ||Wheel type
Spoke wheel
Spoke wheel
Assembled rim wheel
Reversible wheel
Adjustable wheel
Rim body
Fixed rim
Rim height
Rim width
Rim arc radius
Rim end fillet radius
Rim transition arc radius
Rim arc radius position
Bead seat
Bead seat angle
. bead seat width
bead seat fillet radius
selectable bead seat profiles
group and bee (CH)
flat peak (FH)
round peak (RH)
double peak (H2)
GB/T2933—1995
Appendix A
Chinese and English terms correspondence
(reference)
single wheel
dual wheel
zeroset
outset
dual spacing
attachment face
attachment face diameter
wheel types
disc wheel
divided wheel
wire wheel
demountable rim wheel
reversible wheel | | tt | seat angle
bead seat width
bead seat radius
bead seat optional contourscombination hump(CH)
flat hump(FH)
round hump(RH)
double hump(H2)1 Nominal rim diameter
Existing rims are indicated by size codes (in inches); new rims for new metric tires are indicated by mm. 3.2 Rim type
"×" indicates a one-piece rim;
"_" indicates a multi-piece rim.
3.3 Nominal rim width
Rims currently designed are indicated by size codes (in inches); rims designed in the future using the metric system are indicated by mm. 3.4 Rim shape
One or more letters are used to indicate the rim profile of the rim (such as: B, J, K, C, D, E and F), which are usually placed after the nominal rim width. When there is 64
GB/T 2933—1995
, they are also placed before, on both sides of the nominal rim width or not used. The symbol "/" followed by one or more numbers indicates the rim height indicated by the size code for non-road vehicle rims (optional).
3.5 Specification code example (existing rim type) Passenger car: 10X3.50C
15×6J
Light truck, 15×51/2J
16. 5 X 6. 00
15-5. 50 F SDC
(SDC means half-deep groove rim)
Medium and heavy passenger and freight vehicles: 20-7.5
22-8. 00 V
22. 5 X 8.25
Agricultural machinery: 28×W12
28 X W10 H
26 X DW16
(DW means the rim has a second groove)
Non-road vehicles: 25-13.00/2.5
(/2.5 wheel rim code is optional)
4 Marking
4.1 Marking content
4.1.1 Spoke-type wheels and assembled rims Spoke-type wheels and assembled rims shall be marked with the following content: a.
Rim specification code;
Mark of the wheel and rim manufacturer;
Date of production;
Part number or code of the wheel and rim manufacturer. d.
4.1.2 Retaining ring marking
Retaining rings shall be marked with the following content:
Mark of the matching rim;
Mark of the manufacturer.
4.1.3 Split wheels
Both parts of a split wheel shall be marked in accordance with 4.1.1. 4.2 Marking method
4.2.1 Form
The marking shall be permanently concave or convex and shall have no sharp edges. The Roman letters and Arabic numerals shall be clear and shall not be less than 3 mm.
4.2.2 Location
The marking of wheels and assembled rims shall be visible after the tyre has been assembled. The marking of spoked wheels may appear on the rim or on the spokes.
4.3 Others
In addition to the marking described in 4.1, some other information may also be marked, such as legal or customer requirements. When the offset, inner offset or outer offset is to be marked, it is recommended to use the following codes: 65
OS represents offset (e.g. OS175)
b.IS represents inner offset (e.g. IS30)
IS- represents outer offset (e.g. IS-15)
GB/T2933—1995
Single wheel
Double wheel
Inner offset
Zero offset
Outer offset
Double wheel center distance
Mounting surface
Mounting surface diameter||tt ||Wheel type
Spoke wheel
Spoke wheel
Assembled rim wheel
Reversible wheel
Adjustable wheel
Rim body
Fixed rim
Rim height
Rim width
Rim arc radius
Rim end fillet radius
Rim transition arc radius
Rim arc radius position
Bead seat
Bead seat angle
. bead seat width
bead seat fillet radius
selectable bead seat profiles
group and bee (CH)
flat peak (FH)
round peak (RH)
double peak (H2)
GB/T2933—1995
Appendix A
Chinese and English terms correspondence
(reference)
single wheel
dual wheel
zeroset
outset
dual spacing
attachment face
attachment face diameter
wheel types
disc wheel
divided wheel
wire wheel
demountable rim wheel
reversible wheel | | tt | seat angle
bead seat width
bead seat radius
bead seat optional contourscombination hump(CH)
flat hump(FH)
round hump(RH)
double hump(H2)1 Form
The marking shall be permanently concave or convex and without sharp edges. The Roman letters and Arabic numerals shall be clear and not less than 3 mm.
4.2.2 Position
The marking of wheels and assembled rims shall be visible after the tire is assembled. The marking of spoked wheels may appear on the rim or on the spokes.
4.3 Others
In addition to the marking described in 4.1, some other contents may also be marked, such as those required by law or customers. When the offset, inner offset or outer offset is to be marked, it is recommended to use the following codes: 65
OS represents offset (e.g. OS175)
b.IS represents inner offset (e.g. IS30)
IS- represents outer offset (e.g. IS-15)
GB/T2933—1995
Single wheel
Double wheel
Inner offset
Zero offset
Outer offset
Double wheel center distance
Mounting surface
Mounting surface diameter||tt ||Wheel type
Spoke wheel
Spoke wheel
Assembled rim wheel
Reversible wheel
Adjustable wheel
Rim body
Fixed rim
Rim height
Rim width
Rim arc radius
Rim end fillet radius
Rim transition arc radius
Rim arc radius position
Bead seat
Bead seat angle
. bead seat width
bead seat fillet radius
selectable bead seat profiles
group and bee (CH)
flat peak (FH)
round peak (RH)
double peak (H2)
GB/T2933—1995
Appendix A
Chinese and English terms correspondence
(reference)
single wheel
dual wheel
zeroset
outset
dual spacing
attachment face
attachment face diameter
wheel types
disc wheel
divided wheel
wire wheel
demountable rim wheel
reversible wheel | | tt | seat angle
bead seat width
bead seat radius
bead seat optional contourscombination hump(CH)
flat hump(FH)
round hump(RH)
double hump(H2)1 Form
The marking shall be permanently concave or convex and without sharp edges. The Roman letters and Arabic numerals shall be clear and not less than 3 mm.
4.2.2 Position
The marking of wheels and assembled rims shall be visible after the tire is assembled. The marking of spoked wheels may appear on the rim or on the spokes.
4.3 Others
In addition to the marking described in 4.1, some other contents may also be marked, such as those required by law or customers. When the offset, inner offset or outer offset is to be marked, it is recommended to use the following codes: 65
OS represents offset (e.g. OS175)
b.IS represents inner offset (e.g. IS30)
IS- represents outer offset (e.g. IS-15)
GB/T2933—1995
Single wheel
Double wheel
Inner offset
Zero offset
Outer offset
Double wheel center distance
Mounting surface
Mounting surface diameter||tt ||Wheel type
Spoke wheel
Spoke wheel
Assembled rim wheel
Reversible wheel
Adjustable wheel
Rim body
Fixed rim
Rim height
Rim width
Rim arc radius
Rim end fillet radius
Rim transition arc radius
Rim arc radius position
Bead seat
Bead seat angle
. bead seat width
bead seat fillet radius
selectable bead seat profiles
group and bee (CH)
flat peak (FH)
round peak (RH)
double peak (H2)
GB/T2933—1995
Appendix A
Chinese and English terms correspondence
(reference)
single wheel
dual wheel
zeroset
outset
dual spacing
attachment face
attachment face diameter
wheel types
disc wheel
divided wheel
wire wheel
demountable rim wheel
reversible wheel | | tt | seat angle
bead seat width
bead seat radius
bead seat optional contourscombination hump(CH)
flat hump(FH)
round hump(RH)
double hump(H2)
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