JB/T 7924-1995 Metallic multilayer materials for thin-walled bearings
Some standard content:
National Standard of the People's Republic of China
Sliding bearings
Metallic multilayer materials for thin-walled plain bearings
Plain bearings-Metallic multilayer materials for thin-walled plain bearings This standard refers to IS(4383-1981 "Sliding bearings-Metallic multilayer materials for thin-walled plain bearings". Subject content
This standard specifies the chemical composition and marking of metallic multilayer materials used to manufacture thin-walled sliding bearings. Reference standards
GB6985
GB10448
Technical conditions for high-quality carbon structural steel
Electromagnetic pure iron cold-rolled thin plate
Cast copper alloy for sliding bearings single-layer and multi-layer bearings Hardness test method for sliding bearings multi-layer bearing anti-friction alloys GB10453
3 Chemical composition
3.1 Bearing alloy||t t||The chemical composition of lead-based and tin-based alloys is shown in Table 1. The chemical composition of copper-based alloys is shown in Table 2.
The chemical composition of aluminum-based alloys is shown in Table 3.
The individual values in Table 1, Table 2 and Table 3 represent the maximum allowable content. 3.2 Backing material
JB/T7924-1995
GB10451-89
The backing material of bearing alloy is generally 08A1, 08F, 08, 10A1, 10 steel or industrial pure iron. The chemical composition of 08F, 08, 10 steel shall comply with the provisions of GB699, and the chemical composition of industrial pure iron shall comply with the provisions of GB6985. Other materials may also be used after consultation between the supply and demand parties. Backing material.
3.3 Plating
The chemical composition of the plating of the bearing alloys specified in Tables 2 and 3 is shown in Table 4. The single value in the table indicates the maximum allowable content. Approved by the Ministry of Machinery and Electronics Industry of the People's Republic of China on February 10, 1989 388
Implementation on January 1, 1990
Chemical elements
Total amount of other elements
Chemical elements
Total amount of other elements
PbSb10Sn6
310451-89
Chemical composition of lead-based and tin-based alloys
PbSb15SnAs
13.5 ~15.5
CuPb10Sn1om
G-casting
P-sintering
Chemical composition of copper-based alloy
PbSb15Sn10
14.0~16.0
Chemical composition.
CuPb17Sn5
G-casting
14.0~20.0
CuPb24Sn4
G-casting
P-sintering
21.0~27.ol
Note: 1) The chemical composition of this alloy is different from that of single-layer bearings (see GB10448). Instructions for use:
1) IS04383 stipulates 19.0%27.0%.
CuPb24Sn
G-casting
P-sintering
21.0~27.0l
SnSb8Cu4
CuPb30
P-sintering
26.0~33.0
Chemical elements
Total amount of other elements
AISn20Cu
17.5~22.5
310451-89
Table 3 Chemical composition of aluminum-based alloys
Chemical composition,
AISn6Cu
Note: 1) The total amount of Si+Fe+Mn shall not exceed 1.0%. Table 4
Chemical elements
PbSn10Cu2
Total amount of other elements
AiSi4Cd
0.05~0.15
Chemical composition of coating
Chemical composition,
PbSn10
Hardness of bearing alloys is shown in Table 5, and hardness test is in accordance with GB10453. Characteristics and general use
Characteristics and general use of bearing alloys are shown in Appendix A. Code and marking examples
6.1 Code
G-casting, P-sintering.
AICd3CuNi
AISil1Cu
10.0~12.0
2Marking example
Bearing alloy is CuPb24Sn cast (G) on steel back with PbSn10Cu2 plating layer. Multilayer material marking example: Bearing alloy GB10451-G-CuPb24Sn-PbSn10Cu2390
Bearing alloy
PbSb10Sn6
PbSbi5SnAs
PbSb15Sn10
SnSb8Cn4
CuPb10Sn10
CuPb17Sn5
CuPb24Sn4
CuPb24Sn
CuPb30
ASn20Cu
AI Sn6Cu
AISi4Cd
AICd3CuNi
AISi11Cu
19~23HV
16~20HV
18~23HV
17~24HV
70~130HB
6095HB
60~90HB
55~80HB
10451-89
Hardness of strip bearing alloy
60~90HB
45~70HB
40~60HB
30~45HB
Cold rolled and annealed
30~40HB
3 5~45HB
30~40HB
35~55HB
45~60HB
Special treatment
15~19HV
5070HB
Alloy grade
PbSb10Sn6
PhSb15SnAsl)
PbSb15Sn10
SnSb8Cu4
CuPb10Sn10
CuPb17Sn5
CuPb24Sn4
GB10451—89
Appendix A
Characteristics and general uses of metal multilayer materials for thin-wall bearings (reference parts)
Table A1 Thin-wall Characteristics and general uses of metal multilayer materials for bearings
Bearing bimetal
General manufacturing method
Statically or continuously cast on
steel, blue pin or yellow pin back, or
directly cast in the bearing seat hole
Statically or continuously cast on
steel, bronze or brass back, or
directly cast in the bearing seat hole
Continuously cast or sintered on steel
back (belt) or metal mold casting
Continuously cast or sintered on steel
back (belt)bzxZ.net
Continuously cast or sintered on steel
back (belt)
Soft, corrosion-resistant, with lower fatigue strength
and load-bearing capacity, and good compliance, embedding and compatibility. It can be matched with soft shaft or hard shaft, and the journal hardness is required to be not less than
soft, corrosion-resistant, with good compliance, embedding, compatibility, low fatigue strength and bearing capacity. It can be matched with soft shaft or hard shaft, and the journal hardness is required to be not less than
with high fatigue strength and bearing capacity
, high impact resistance, good corrosion resistance and corrosion resistance. Matching with rate hardened shaft, the hardness of journal is not less than HRC53. It has high fatigue strength, load-bearing capacity, impact resistance, abrasion resistance and wear resistance. The hardness of matching journal is not less than HRC50. It has high fatigue strength, load-bearing capacity, impact resistance and corrosion resistance. It has good bearing surface performance (embedding, compliance and compatibility). Matching with rate hardened shaft, the hardness of journal is not less than HRC48. General use. It is suitable for internal combustion with small load. Main shaft and connecting rod bearings, thrust washers, camshaft sleeves are suitable for main shaft and connecting rod bearings, thrust washers, camshaft sleeves of internal combustion engines with small loads. They are suitable for medium loads, medium to high speeds, and bearings with large impact loads. Wrapped bearings, thrust washers, and connecting rod piston pin sleeves used in mechanical equipment are suitable for main shaft and connecting rod bearings and wrapped sleeves of heavy-loaded internal combustion engines when the sliding surface of the bearing is plated with a soft alloy layer. , thrust washers, floating sleeves for steam locomotives, etc.
Applicable to bearings working at high speed, swinging and rotating conditions. When the sliding surface of the bearing is plated with a soft alloy layer, it can be used for high-speed, heavy-loaded internal combustion engine main shaft and connecting rod bearings, thrust washers, rolled sleeves, rolling mill bearings, machine tool bearings, etc.
Alloy grade
CuPb24Sn
CuPb30
AISn20Cu
AISn6Cu
AISi4C d
Bearing bimetal
General manufacturing method
GB10451---89
Continued Table A1
-Continuously cast or sintered on steel
back (strip), static or centrifugal
Cast on steel back
Rolled on steel back (middle)
Rolled on steel back (strip)
Rolled on steel back (strip)
Rolled on steel back (strip)
Rolled on steel back (strip)
Has higher fatigue strength and load-bearing capacity,||t t||Good bearing surface performance, susceptible to lubricating oil corrosion, the fatigue strength of cast alloy is about 20% higher than that of sintered alloy, with soft alloy
alloy plating can be matched with hard shaft or soft shaft, the hardness of the journal is not less than HRC45
with medium fatigue strength and load-bearing capacity,
Good bearing surface performance, susceptible to lubricating oil corrosion, the working surface of the bearing must be plated with a soft alloy layer, and the hardness of the matching journal is not less than HB270
with medium fatigue strength and load-bearing capacity,|| tt||Good corrosion resistance, good bearing surface performance, can be matched with soft shaft, the hardness of the shaft is not less than HB250
Has medium to high fatigue strength and
Carrying capacity, good corrosion resistance, soft alloy layer can be matched with hard shaft, the hardness of the shaft is not less than HRC45
Has medium to high fatigue strength and
Carrying capacity, fatigue strength can be improved by heat treatment, has good corrosion resistance, soft alloy layer can be matched with hard shaft, the hardness of the shaft is generally not less than HRC 48
General purpose
Commonly used for main shaft and connecting rod of internal combustion engine
Bearings, thrust washers, rolled bearing sleeves
Commonly used for main shaft and connecting rod of internal combustion engine
Bearings, thrust washers, rolled sleeves
Commonly used for main shaft and connecting rod of internal combustion engine
Bearings, thrust washers, rolled sleeves or bearings for compressor and refrigerator
Commonly used for main shaft and connecting rod of internal combustion engine
Bearings, thrust washers, rolled sleeves
Used for main shaft and connecting rod of internal combustion engine Rod and shaft
Bearings, thrust washers, rolled sleeves
Alloy grades
AICd3CuNi
AISiiCu
PbSn10Cu2
PbSn10
Bearing bimetal
General manufacturing method
Rolled onto steel back (strip)
Rolled onto steel back (strip)
Electroplated onto the sliding surface of the bearing shell
Note: 1) PbSb15SnAs is only cast on the steel strip. Additional notes:
This standard is proposed by the Ministry of Machinery and Electronics Industry, GB10451-89
Continued Table A1
It has medium to high fatigue strength and
carrying capacity. Adding manganese to the alloy can improve fatigue strength. It has good corrosion resistance. It needs to be plated with a soft alloy layer. The hardness of the matching shaft is generally not less than HRC48
It has high fatigue strength and carrying capacity, good corrosion resistance and cavitation resistance. The soft alloy plated layer can be matched with the hard shaft. The hardness of the journal is generally not less than HRC50
Soft, has good friction reduction, good shaft
bearing surface properties and corrosion resistance, and the fatigue strength depends on its thickness
This standard is under the jurisdiction of the Mechanical Standardization Research Institute of the Ministry of Machinery and Electronics Industry. General use
Commonly used for main shafts and connecting rods of internal combustion engines
Bearings, thrust washers, rolled sleeves
Commonly used for main shafts and connecting rods of internal combustion engines
Bearings, thrust washers, rolled sleeves
Applicable to various bearing alloy materials
The thickness of the bearing surface coating is generally
0.013~0.025mm, large-scale oil-fired engine
main bearing is 0.05~0.07mm.
This standard was drafted by the Mechanical Standardization Research Institute of the Ministry of Machinery and Electronics Industry and the Changchun Automobile Research Institute. The main drafters of this standard are Wan Ma, Zhang Baoyi, 394
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