VIIPLUS INTERNATIONAL |
|
Precision Assembly Dimension & Size Composite PTFE Metal
Bearings for Fluid Power Systems Pump Bushes are designed to meet
the exacting requirements of fluid power systems. These bearings,
constructed with a composite of PTFE and metal, offer superior wear
resistance and corrosion resistance, ensuring long-term reliability
and durability. The precision assembly dimensions and sizes of
these bearings guarantee a precise fit and optimal performance in
pump bushes. The composite material combines the strength and
rigidity of metal with the lubrication and low-friction properties
of PTFE, resulting in efficient and smooth operation of fluid power
systems. Overall, these precision-engineered bearings are an ideal
choice for fluid power systems pump bushes, delivering reliable and
efficient performance in various industrial applications.
Metal composite bearings have been relatively successful in
replacing traditional lead-bearing bronze or bimetallic bearings in
many lubrication applications.But until recently, ptfe funds are
still unable to match the metal genera - polymer sliding bearing
alloy bearing assembly dimension precision, which limits its
application in specific areas, in these areas, the axial clearance
control to the improvement of operation efficiency, or noise,
vibration and no comfort plays an extremely important role.
VIIPLUS Bearings supply a variety of pump metal bushings including brass
bushings, steel bushing, & bronze bushings. If you already know
which type of metal bushing is right for your application, you can
quickly navigate to it below for more information:
Self-lubricated bearings have been used in vane pumps and the
results show that the metal polymer composite straight liner has
excellent tribological performance under dry, edge and hydrodynamic
lubrication operating conditions, providing excellent pump
reliability.
In order to improve the reliability of the pump, VIIPLIUS provides
a self-lubricating bearing solution.
Provides a wide variety of self-lubricating sliding bearings to
meet or even exceed the needs of a variety of applications.It is
used in rotating, swinging and sliding motions and in a variety of
difficult operating conditions such as high static or vibrating
loads, temperature limits and friction conditions.
VIIPLUS SLIDING BEARING PTFE series self-lubricating bearings can meet the unique application
requirements of the fluid power industry.We can provide complete
solutions, reliable performance under high load and high speed, can
resist cavitation and chemical corrosion, suitable for today's
advanced fluid power applications, in gear pump, piston pump, vane
pump, compressor, cylinder and other industries have a wide range
of application.
The benefits of self-lubricating straight bearings are as follows:
Self-lubricating bushing with ptfe-based low friction bearing
cladding for extended service life to avoid lining and shaft damage
while operating under dry or boundary lubrication conditions
Thin - walled, single - piece structure allows for compact,
lightweight pump design
Easy to assemble in pump without expensive tools and equipment
Environmentally friendly lead-free bearing assembly.
This requires self-lubricated bearings to provide high wear
resistance, fatigue and flow erosion hydrodynamic composite bearing
bearing bush solutions
The technical requirements and specific functions of sliding
bearings in this application are the most demanding requirements of
any high-power hydraulic components.In addition to withstand the
temperature range in - 50 ℃ to + 140 ℃ as well as the wide range of
lubricant viscosity change, must be able to withstand extreme high
load bearing oscillation velocity and boundary lubrication
conditions.
Maintenance-free bearings are used in common hydraulic fluid and
many types of water emulsion conditions, suitable for vane pumps,
gears, plunger pumps and motors.In addition to their excellent
frictional and anti-wear properties, they are stable and reliable
under required loads and speeds, making them suitable for many
hydrodynamic applications.
Application requirements
Variable displacement axial piston pumps are used in many
industries of high power hydraulic systems, including aerospace,
automotive, construction equipment, agricultural equipment, machine
tools, etc.These pumps provide variable flow from zero to maximum
capacity for the system actuators.The change of flow is realized by
the change of the position of the swash plate.
We provide bearing solutions for hydraulic pumps and motors,
including shaft bearings, half bearings, thrust blocks, wear
plates, hydraulic cylinders, connecting rod bearings.Even with the
most stringent application requirements, our customers can still
rely on our high strength, scratch resistance and low friction
aluminum alloy bearings.
· external gear pump and motor
· vane pump and centrifugal pump
· radial and axial plunger pumps
· internal gear pump and radial piston motor
The rotary vane pump provides hydraulic power for the automatic
transmission.
Located on the transmission cover, they pull oil at low pressure
from the sump at the bottom of the transmission and feed it at high
pressure to the hydraulic system, the gearbox cooler, and the
torque converter.
The blade rotor is supported by bearings on the front and rear
plates.
When mounted on the backplane, needle roller bearings may fail due
to lack of oil, especially after a long rest in different climatic
conditions or during repeated start and stop operation.
Improve energy efficiency
Maintenance free,
Reduce noise and assembly costs
Replace expensive rolling bearings
Max. load | Static | 250N/mm2 |
Dynamic | 140N/mm2 | |
Max. speed | Dry | 2m/s |
Lubrication | >2m/s | |
Max. PV (Dry) | Short-time | 3.6N/mm2*·m/s |
Continuous | 1.8N/mm2*·m/s | |
PV | Hydrodynamic | 30N/mm2*·m/s |
Temp. | -195℃~+280℃ | |
Friction coefficient | 0.03~0.20 | |
Thermal conductivity | 42W (m·k)-1 | |
Coefficient of thermal expansion | 11*10-6k-1 |
· Metal-Polymer Composite Bushing Material
· Steel back + Porous Bronze Sinter +
· PTFE + Fillers
OPERATING PERFORMANCE | |
Dry | Good |
Oil lubricated | Very Good |
Grease lubricated | Good |
Water lubricated | Fair |
Process fluid lubricated | Good |
* Depending on operating conditions
Bearing forms available in standard dimensions
· Cylindrical bushes
· Flanged bushes
· Sliding plates
· Thrust washers
· Flanged washers
Metric bearings and imperial bushings made to order: Standard
bushing forms in special sizes, half-bushings, stamped/deep drawn
shapes, bearings with locating notches, lubricant holes and
grooves, customized designs