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SPB-SL4 Bronze Bushing

SPB-SL4 Oilless Bronze Bearing Bushing with White PTFE lubricants 

is manufactured using high tensile manganese bronze plugged with solid lubricants. Basic bronze alloy material is CuZn25Al6Fe3Mn3 with graphite (SL4) plugged, we also provide widely optional choice from CuSn5Pb5Zn5, CuAl10Fe5Ni5, CuSn12, and other standards materials.

Especially our company have developed the SL4 solid lubricants for water contacting applications like jet, propeller, ship, boatyard, offshore platform, hydraulic turbine etc.

These products are mainly used in applications of high load & moderate speed. It has the ability to withstand the temperature up to 400oC. We also have the capability to develop these bushes and plates as per any specifications of our clients.


SPB-SL4 oilless bronze bushing is in brass or bronze base with SL4 PTFE(Teflon) lubricants filled.The SL4 is in better performance when applicating (sea) water contacting area.Normally we use alumininum bronze CuAl10Fe5Ni5 base + SL4 lubricants for sea area applications.


PTFE Plugged oilless Bronze bearing bushing


  • Charactor of Bronze base

Bronze material

CuZn25Al6Fe3Mn3

+SL2

CuSn5Pb5Zn5

+SL2

CuAl10Fe5Ni5

+SL2

CuSn12

+SL2

Cu%

Rest

85

80

88

Sn%

--

5

--

12

Pb%

--

5

--

--

Zn%

25

5

--

--

Al%

6

--

10

--

Ni%

--

--

5

--

Fe%

3

--

5

--

Mn%

3

--

--

--

Density

8.2 g/cm3

8.8 g/cm3

8.5 g/cm3

8.8 g/cm3

Hardness

>HB210

>HB70

>HB150

>HB80

Max. Load Pressure

100 N/mm2

40 N/mm2

50 N/mm2

45 N/mm2

Max. Linear Speed

0.5 m/s(dry)

0.4 m/s(dry)

0.25 m/s(dry)

0.5 m/s(dry)

Max. PV

1.65 N/mm* m/s

1.00 N/mm* m/s

1.25 N/mm* m/s

1.20 N/mm* m/s

Tensile Strength

>750 N/mm2

>200 N/mm2

>500 N/mm2

>360 N/mm2

Elongation

>12 %

>15 %

>10 %

>8 %

Temperature Limit

-40 ~ +300 oC

-40 ~ +250 oC

-40 ~ +400 oC

-40 ~ +300 oC


  • Charactor of Lubricants

Code

Material

Features

Application

SL2

Graphite composite

Low friction

Chemical resistant

Low cost

Temperature limit 400oC

Widely used for machinery

SL4

PTFE+MoS2 composite

Water contacting lubricating

Longer life

Temperature limit 300oC

(Sea) Water lubricating


Remarks:

SPB-SL4 in flanged = SPF-SL4 oilless bronze bush

SPB-SL4 in SL2 = SOB oilless bronze bush

SPB-SL4 in plate type = HCS oilless bronze pad

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