SPF-SL4 Flanged Bush Bronze Oilless
SPB-SL4 Flanged Casting Oilless Bronze 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.
SPF-SL4 oilless bronze bushing is in brass or bronze base with SL4 PTFE(Teflon) adds lubricants filled.The SL4 is in better performance when applicating (sea) water contacting area.Also sliding surface can be painted MoS2 for initial lubricating.
- 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:
SPF-SL4 in sleeve = SPB-SL4 oilless bronze bush
SPF-SL4 in SL2 = SOB oilless bronze bush
SPF-SL4 in plate type = HCS oilless bronze pad
