Plug Valves with 316 Sintered Stainless Bushing Shaft Bearing and
Thrust Washers are valves that utilize specific components to
ensure smooth operation and durability. The 316 sintered stainless
steel bushing shaft bearing provides excellent corrosion resistance
and wear resistance, while the thrust washers help distribute and
reduce the thrust loads on the valve stem, ensuring a longer
service life. These components work together to ensure the plug
valves perform effectively and reliably in various applications.
Stainless Steel Bushings
Wrapped bushing with sliding surface Special manufacturing
Upon request, we can offer inch-sizes, special lengths, bearings
acc. to drawing and various -layers for different areas of use as well as different backings in bronze
or stainless steel etc.
Corrosion-Resistant Materials Bearings--Stainless Steel T316,
Sintered for increased lubricity and hardness
Thrust washers and sliding plates (sheets) If a bore is made,
always operate from the sliding surface towards the steel surface.
This is to prevent the three layers from dividing.
VIIPLUS VALVE bearings that are of the self-lubricating type which provide strength
and low friction for easy operation and lifetime service. No
special periodic maintenance is needed.
The permanently lubricated upper and lower bearings require no
maintenance, and are designed for horizontaland/or vertical shaft
loading.
The bearings provide strength and low friction for easy operation
and long service life.
Thrust Bearings & Washer Plug Valve Sizes Bushing &
Self-lubricating Bearing life
Valves Bushings are available. Please contact VIIPLUS.
Valves shall be furnished with replaceable Stainless Steel,
sintered sleeve type bearings conforming Bearings shall be of
sintered, oil impregnated type 316 stainless stell bushings
TEX Bushing,Customized Bushing , Fiber Bush
High efficiency gearing & bearing systems to reduce input effort &
handwheel size
Hinge pins shall be 304 Stainless Steel rotating in bronze bearings
Stainless steel fabric bushings,this kind of bushings widely used
in valve,oil, chemistry, metallurgy.It has flexible bearings, no
maintenance, low installation accuracy, good shock absorption and
impact resistance. Low noise characteristics, and due to the high
strength of the fiber material and the support of the steel back,
it has the unique advantage of high load capacity. In general
sports, it is advisable to maintain proper clearance between the
inner hole and the shaft. The size of the gap can be referred to
the type product. The outer diameter of the bearing and the seat
hole are generally interference fit. The interference can also be
referred to the type product.
Metal matrix fabric composite sheet has more flexibility than
general rigid bearings due to the 0.25mm thickness of fiber cloth
lubrication layer. In some low-speed rocking motions, the bearing
inner hole and the pin shaft can be used without gaps or even
interference. Cooperate, this can better exert its shock absorption
and low noise performance; such bearings are mainly used in
low-speed, heavy-duty oil and grease lubrication, and can also be
used in oil-free lubrication.
1. Press both upper and lower bearings into the valve body.
2. Install lower stem packing and lower spacer. Install cover plate with cap
screws and washers.
3. Install upper bushing, upper packing, and upper spacer into
valve body top stem hole.
4. Install packing retaining ring onto groove on valve stem.
5. Install disc into valve seat. This will require that a lubricant
such as silicone oil or grease be
applied to the stem hub areas of both the disc and seat.
6. Install stem into valve body top stem hole (operator top plate
side). The stem should be
installed so that its milled flat aligns with the disc torque plug
hole.
7. Torque the plug down through the disc and against the milled
flat on the stem.
TEX bearing use the fibres fabric and aramid fiber overlay on metal
backings,the fabric have very high load capacity and high accuracygood run with low speed and
heavy friction superior performance
Polytetrafluoroethylene fiber /Woven Fabric
VIIPLUS TEX fiber metal base self-lubricating bearing is a
self-lubricating composite bearing material made of high-quality
low-carbon steel plate, bronze plate or stainless steel plate as
the matrix, with the woven fabric of fiber as the friction surface
layer.
The two are rolled into sliding bearing by means of a solid bond of
structural adhesive.In order to guarantee the bonding strength
between fiber and metal sheet, the woven fabric is made of special
filament and aramid filament.
The bearing has the characteristics of high bearing capacity, good
wear resistance, suitable temperature, wide range of medium, simple
structure, compact size and good stability.
Polytetrafluoroethylene () is a kind of self-lubricating material
with excellent performance.But the wear resistance is poor because of the low strength.At present, most of the fibers or other fillers are
used to improve the wear resistance, the effect is very limited.And polytetrafluoroethylene fiber has tensile strength 15 times higher
than pure polytetrafluoroethylene resin, to make up for the lack of
this aspect, wear resistance is greatly improved, at the same time, the fiber also avoids the occurrence of cold
flow phenomenon of polytetrafluoroethylene resin.
Polytetrafluoroethylene fiber metal base self-lubricating bearings
are divided into steel base, copper base and stainless steel base
three.
Maximum load pressure: 180Mpa
Friction factor: 0.03~0.20
Operating temperature range: -90 ° C ~ 180 ° C
Typical Applications
Fiber bearing can be used in seawater, gasoline, hydraulic oil,
engine oil, kerosene, lubricating oil, weak acid, ammonia water,
liquid nitrogen, washing fluid and other media.
Fiber bearing is the most suitable for high load, low speed, oil
film can not be maintained or formed, can not use lubricants,
impact load is large, corrosion resistance, swing and other
conditions of the use of the bearing, the specific application is
as follows:
1.Hydropower station: turbine water guide mechanism, ball valve,
butterfly valve;
2.Heavy lift systems for trucks, tractors, forklifts and related
equipment, such as rocker arm bushing, etc.;
3.Steering system, braking system and connecting rod fulcrum of
clutch of trucks, buses and agricultural tractors;
4.A motor steering system, such as a motor pivot, is installed
externally at the stern;
5.Butterfly valve and ball valve, bearing comply with NSF drinking
system structure parts health standards;
6.Food machinery, textile machinery, printing machinery, tobacco
machinery, packaging machinery and so on;
7.Supporting bearings for Bridges, pipelines and other structures;
8.Lifting machinery, especially the main boom, moving boom, foot
fulcrum and other parts of the fulcrum can not be lubricated.
- Strong impact load resistance, no "crawling" phenomenon, smooth
operation;
- High wear resistance, good corrosion resistance, no cold flow
phenomenon;
- Good dimensional stability (no expansion in water), non-conductive,
non-magnetic;
Bearing is thin wall structure, light weight, small volume,
suitable for compact design;
Low friction woven fabric oilless bearing VSB-36 TEX is widely used
in high temperature production lines, construction machinery,
automobile chassis parts, ball valves, butterfly valves, pumps and
chemical industries and high-speed trains and other heavy low and
cannot refuel occasion etc.
Strusture
1.This new material use the fibres fabric overlay on metal
backings.
2.The fabric has very high load capacity and much longer operating
life compared with conventional 3-layer bushes.
3.The metal can be Carbon steel , Stainless steel, Bronze etc.
Typical Characteristics
TEX Bushing,Customized Bushing,Fiber Bush & Low Friction Woven
Fabric Oilless TEX Bearing
Plain Bearings and Sleeve Bearings Self-Lubricating Bearings, Liner
Type Non-Metallic woven Stainless Steel 316 with fabric
Stainless steel 316 and steel-base polytetrafluoroethylene aramid fiber braid bearings
are self-lubricating materials with wear-resistant fibers as the
main surface material.The product has low friction coefficient,
good bearing capacity, abrasion resistance and self-lubrication
performance, mainly used in various high-grade valves and go-kart.
Metal composite bearing base fabric is based on steel substrate,
the surface adhesion of ethylene fiber and aramid fiber woven
fabric, after rolling processing into a collar or stamping
processing into a variety of forms such as gasket. The product has
the characteristics of high precision, high load bearing pressure and excellent low speed
and heavy friction performance. It can be widely used in heavy load
equipment such as engineering machinery and agriculture and
forestry machinery.
Technical Data
Max. load | Static | 350N/mm2 |
Dynamic | 180N/mm2 |
Max. speed | Dry | 0.5m/s |
Lubrication | >1m/s |
Max. PV (Dry) | Short-time | 3.6N/mm2*·m/s |
Continuous | 1.8N/mm2*·m/s |
Temp. | -50℃~+250℃ |
Friction coefficient | 0.03~0.20 |
Thermal conductivity | 42W (m·k)-1 |
Coefficient of thermal expansion | 11*10-6k-1 |
Preparation and Properties of fiber braided Self-lubricating
Composites
Polytetrafluoroethylene () fiber fabric self-lubricating composite material is a new kind of
solid self-lubricating material, fiber fabric retains the low
friction coefficient of material at the same time, and has a high
mechanical strength.Therefore, as the lubrication layer between the
inner and outer rings of joint bearing, it is widely used in
automobile, large machinery and other fields.In this paper, fiber
and Woven Fabricfiber were used as raw materials to weave fiber
fabric by weaving machine. After the surface treatment of sodium
naphthalene complexate solution, the self-lubricating composite
material of fiber fabric was prepared by phenol-epoxy adhesive and
bonding curing treatment of 45# steel.The friction coefficient and
wear amount of fiber and the effect of surface treatment on the
friction properties of composites were measured by friction and
wear testing machine.The friction surface was characterized by
scanning electron microscopy and the friction mechanism was
analyzed.The interlining materials of woven fabric and finished
fabric are compared and analyzed.The results show that the surface
treatment with sodium naphthalene complex solution can strip the F
element from the surface of fiber fabric, enhance its bonding
strength with metal, but also reduce the wear resistance of fiber
fabric to a certain extent.And the shorter the surface treatment
time is, the smaller the reduction of wear resistance will be.In
addition, the surface treatment of sodium naphthalene complex
solution has little effect on aramid fiber and Woven Fabric
fiber.After surface treatment for 5min, the friction surface of the
sample produced more debris and abrasive wear.The higher the
content of fiber in the self-woven fabric, the better the anti-wear
performance of the fabric. For the fabric with 30% fiber content,
the higher the friction speed is, the higher the friction
coefficient is.On the contrary, for fabrics with 80% fiber content,
the higher the friction speed, the lower the friction coefficient.
VSB-36 Bushing slide bearing bushings, oilless plain bearing
Stainless Steel316+/FABRIC
Apply to the oil or fuel work harder parts,wear resistance,low coefficient of ftiction,long life:good overall
performance.Apply to the oil or fuel work harder parts,wear resistance,low
coefficient of friction,long life;good iverall perfotmance.
It is of oil resistant, acid resistant, alkali resistant and
seawater resistant, more over, there is no lead in the surface
layer and so is particularly fit for application in food machinery,
alkali flow meters, pumps motion elements in printing machines
chemical engineering machines and other ocean industry. The bushing
is a triple layers composites one, the base material is stainless
steel back and a film of heat resistant power filled being
calendered onto the sintered spherical bronze interlayer.
Availability
Bearing forms available in standard dimensions
· Cylindrical bushes
· Flanged bushes
· Sliding plates
· Thrust washers
· Flanged washers
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