| SF-1T Gear Pump Bush |
Metallographies Structure |
|
|
1.PTFE with lead 0.01~0.03mm
2.Porous bronze 0.2~0.3mm
3.Steel backing 0.7~2.3mm
4.Tin-plating 0.005mm or copper plating 0.008mm |
| Introduction |
SF-1T is composed of a specially designed surface layer of PTFE formulations and is specifically applied for the high PV bushes of gear oil pumps.
It is to be used in hydrodynamic or boundary lubricating condition of medium or high pressure gear oil pumps such as P=16-25 Mpa,V=3.5-5m/s.it shows the benefit of low friction coefficient,wear resistant and anti-impact properties.At hydrodynamic lubrication,The PV limit reaches to 120N/mm2.m/S.It is a best choice for the bushes of various kinds of gear pumps as well as plunger pumps,vane pumps and so on.it's successfully tested over one million times by changjiang hydraulic equipments company. |
| Technical |
Load capacity£º140N/mm2
Temperature£º-195~+280¡ãC
Speed limit£º10m/s
Friction coef(u)£º0.03~0.18
PV LIMIT(Dry)£º4.3N/mm2 .m/s
PV LIMIT(OIL)£º60N/mm2 .m/s |
| Application |
1.Low friction under oil condition.
2.Wear resistant and anti-impact.
3.At hydrodynamic lubrication,the PV limit reaches to 120N/(mm*mm)*m/s.
4.It is the best choice for the bushes in various kinds of gear pumps
as well as plunger,vane pumps and so on. |
SF-1T ¡¡CHEMICAL CHARACTERISTICS |
| Type |
In Air |
In Vacuum |
In water |
In Vapor |
Weak Acid |
middle Acid |
Strong Acid |
In Alkali |
| SF-1T |
OK |
OK |
OK |
OK |
BAD |
NO |
NO |
OK |
|
MMD-10¡¡Friction&Wear Test |
|
| Type |
Time |
Test Condition |
Friction coef(u) |
TEMP.
(¡ãC) |
Wear
(mm) |
| Lubricate |
Speed |
Drang |
| SF-1T |
3hr |
Dry |
0.4m/s |
3.5N/mm2 |
0.185 |
93 |
0.015 |
| SF-1T |
3hr |
Oil |
0.4m/s |
3.5N/mm2 |
0.058 |
52 |
0.012 |
|
|
|
