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SAE-799 bimetal bearings
Bimetal Bush SAE-799
Specifications
 
SAE-799
cylindrical bushings
Metric Size
     

   

 SB-799 Material  ( CuPb24Sn4, SAE-799, JIS-LBC6 Bronze Alloy ) 

Sintered SAE799 Layer + Steel Backing + Copper Plating / Tin-Plating

SB-799 is a bimetal bushing with steel as backing and sintered CuPb24Sn24 as lining layer. 
This type has fairly good performance in anti-fatigue and load capacity.
It is suitable for middle 
speed and middle load.
When over plated certain soft alloy, it can be applied in high-speed internal 
combustion engine and as connect rod.


Features

Steel shell backed with a lead bronze lining bearing material for oil lubricated applications. This material has high load capacity and good fatigue properties. It is widely used in automotive applications such as compressors, steering gear, power steering, pedal bearings, king-pin bushes, tailgate pivots, mechanical handling and lifting equipment, hydraulic motors, agricultural machinery etc.


Structures

1. Sinter bronze powder: good wear resistance and excellent load carrying capacity.
2. Steel backing: provides exceptionally high load carrying capacity, excellent heat dissipation.
3. Copper plating thickness 0.002mm provides good corrosion resistance.

                

Composition Analysis of SB-799  ( CuPb24Sn4, SAE-799, JIS-LBC6 Bronze Alloy )

Cu=balance  Pb=21.0~27.0%  Sn=3.0~4.5%   Zn=0.5%   P=0.1%  Fe=0.7%  Ni=0.5%  Sb=0.2%  Others=0.5%

             

Chemicals
(Inner sintered layer)

SB-797
SAE-797

CuPb10Sn10

SB-799
SAE-799

CuPb24Sn4

SB-820
DIN17670
CuPb6Sn6Zn3

SB-830
BS PB1
CuSn10

SB-840
CuSn6 (2.1020)
CuSn6.5P

SB783
SAE783

AlSn20Cu

Cu

Balance

Balance

Balance

Balance

Balance

0.7~1.3

Pb

9.0~11.0

21.0~27.0

2.0~4.0

0.1

0.1

-

Sn

9.0~11.0

3.0~4.5

5.0~7.0

9.0~10.0

6.0~6.8

17.5~22.5

Zn

0.5

0.5

5.0~7.0

0.3

0.3

-

P

0.1

0.1

0.1

0.1

0.1~0.3

-

Fe

0.5

0.7

0.6

0.5

0.6

0.7

Ni

0.5

0.3

0.3

0.5

0.5

0.1

Al

-

-

-

-

-

Balance

Other

0.5

0.5

0.5

0.5

0.5

0.5


• Referance of Material Standard Code

         
 

Material

Alloy composition

Alloy hardness

International standard

  

SB-797

CuPb10Sn10

80~120HB

JIS-LBC3. JIS-LBC3. SAE-797. DIN CuPb10Sn. UNS C93700. CLEVITE F100. 
CC495KDAIDO L10. D. A. B. D57. Federal Mogul HF2. Glacier SY. GLYCO66. ACL F100

 

SB-799

CuPb24Sn4

45~70HB

JIS-LBC6. JIS-LBC6. SAE-799. GLYCO 68. DAIDO L23. Clacie rsx. ACL F250

 

SB-820

CuPb6Sn6Zn3

70-100HB

Din17670

 

SB-830

CuSn10

70-100HB

Din G-CuSn10 ;BS PB1

 

SB-840

CuSn6.5P

70-100HB

DIN CuSn6(2.1020); JIS H3110

 

SB-783

AlSn20Cu

30~40HB

JIS-AJL. SAE-783. GLYCO74. Glacier AS15. ACL820


• Technical Data

                 
  

Data

SB-797
SAE-797
CuPb10Sn10

SB-799
SAE-799
CuPb24Sn4

SB-820
DIN17670
CuPb6Sn6Zn3

SB-830
BS PB1
CuSn10

SB-840
CuSn6(2.1020)
CuSn6.5P

SB-783
SAE-783
AlSn20Cu

  
 

Material

Steel+
CuPb10Sn10

Steel+
CuPb24Sn4

Steel+
CuPb6Sn6Zn3

Steel+
CuSn10

Steel+
CuSn6.5P

Steel+
AlSn20Cu

 
 

Alloy layer hardness HB

80~120

45~70

70~100

70~100

70~100

30~40

 
 

Max dynamic Load P N/mm²

150

130

130

130

130

100

 
 

Max.Speed V m/s

Grease lubrication

3.5

2.5

2.5

2.5

-

-

 
 

Max.PV limit N/mm²·m/s

2.8

2.8

2.8

2.8

2.8

-

 
 

Friction Coefficient u

0.05~0.10

0.05~0.15

0.05~0.15

0.05~0.15

0.05~0.15

-

 
 

Max.Speed V m/s

8

10

5

5

5

15

 
 

Max.PV limit N/mm²·m/s

Oil lubrication

10

10

10

10

10

8

 
 

Friction Coefficien u

0.04~0.12

0.04~0.12

0.04~0.12

0.04~0.12

0.04~0.12

0.05~0.02

 
 

Max Working temperature ℃

Grease lubrication

150

150

150

150

150

150

 

Oil lubrication

250

250

250

250

250

250

 
 

Thermal conductivity W/mk

60

60

60

60

60

47

 
 

Coefficient of linear expansion

18×10-6/K﹣¹

19×10-6/K﹣¹

18×10-6/K﹣¹

18×10-6/K﹣¹

19×10-6/K﹣¹

18×10-6/K﹣¹

 
 

Match the axis

Hardness HRC

≥53

≥45

≥53

≥53

≥53

≥270

 

Roughness Ra

0.32~0.63

0.32~0.63

0.16~0.63

0.32~0.63

0.16~0.63

0.16~0.63

 
• Main Features  
                 
 

① Sliding

★★★★★

★★★★★

★★★★

★★★★★

★★★★

★★★★

 
 

② Abrasion Resistance

★★★★★

★★★

★★★★

★★★★

★★★★

★★★★

 
 

③ Hardness

★★★★★

★★

★★★★

★★★

★★★★

★★

 
 

④ Anti-bite Shaft

★★★★

★★★★★

★★★

★★★★

★★★

★★★★

 
 

⑤ Corrosion-resistant

★★★★★

★★

★★★★

★★★★

★★★★

★★★

 
 

⑥ High loading

★★★★★

★★

★★★★

★★★★

★★★★

★★★

 
 

⑦ Anti-fatigue

★★★★★

★★★

★★★★

★★★★

★★★★

★★★

 
 

⑧ Environmental protection

x

x

x

★★

★★

 

* Initial pre-lubrication at assembly is required.


• Types of Oil Grooves for bimetal bushings

   

   

• Types of Oil Prockets for bimetal bushings

 
 

• Types of Butt Jionts for bimetal bushings
 
 
 

Typical Applications

   

 
The main applications are in Automotive and Industrial products.
Automotive: McPherson struts and shock absorbers, doors, bonnets and tailgate hinges, steering columns, clutches, gearbox selector fork guides, wiper arms, power steering pumps, pedal bushes, ABS equipment, etc.
Industrial: Aerospace, agricultural equipment, construction equipment, material handling equipment, forming machines-metal, plastic and rubber, office equipment, medical and scientific equipment, packaging equipment, pneumatic and hydraulic cylinders, pumps and motors, railroad and tramways, textile machinery, valves, etc.
Bimetal Bushings‘ applications for King pin, Spring eyes, Trunion, Piston pin, Rocker arm, Connecting rod, Transmission system,
Distributor, Clutch, pilot, Starter, Generator, Oil pump, gear pump, Water pump, Cam shaft, Intermediate shaft, Balance shaft.
Bimetal Washers’ applications for Main bearing, Cam shaft, Crank shaft, Distributor, Transmission system, Oil pump, Ram pump,
vane pump and other applications.
Engine Bearings’ application for Cam shaft, Crank (main), Con. Rod (big end) and other applications of engine bearing.
 

Other Standard Wrapped Bimetal Bushing Shapes
 

   

 

         
SAE-797 Bimetallic Bush   SAE-48 Bimetallic Bush   SAE-783 Bimetallic Bush            
                     
               
Flanged Bimetallic Bush   Bimetallic Thrust Washers   Bimetallic Strips & Plates            

• Bimetal Bearings & Bimetallic Bushings
 
     
Babbitt Bearings ( SAE783 / AlSn20Cu )   Bimetal Bush ( SAE797 / CuPb10Sn10 )   Bimetal Bush | X groove | 50x55x60 mm   Bimetal Bush (SAE799) with Oil Prockets
             
     
Combined Bush - bronze on steel    Centrifugal Cast Bronze on Steel Bush    Oil grooved Bimetal Bushing   Bimetallic Bearing with Oil Groove
             
     
Bimetal bearing with oil pockets   Bimetal bush with oil grooves   Bimetal bush with diamond graphites   Wrapped Bimetal Bush
             
        1
Bimetallic bushing with diamond oil Pockets   Oil grooved bimetal bushing