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.
- 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/mm2 * m/s |
1.00 N/mm2 * m/s |
1.25 N/mm2 * m/s |
1.20 N/mm2 * 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
