Not only do VESCONITE bushes
generally last much longer, but the life of mating shafts and pins is
often greatly extended.
VESCONITE has gained
international recognition as a versatile, high performance replacement for
traditional materials in anti-friction and wear applications
VESCONITE's initial cost is
moderate and gives excellent savings over its installed life cycle. It is
stocked in a wide range of shapes and sizes. VESCONITE
is easily machined to fine tolerances on standard metal working equipment.
The factory also offers a special service for the production of custom
Vesconite parts include bushes, thrust
washers, guides, wear pads, wear strips, slides, light duty gears and many other
components subject to wear and friction.
The main properties which
make VESCONITE an
outstanding bearing material are:
VESCONITE provides outstanding wear resistance, resulting in many
times longer service life when compared with bronze. It is also less
affected by poor lubrication and dirty conditions.
High load bearing
VESCONITE has very low creep rates and is suited to design loadings
up to 30 MPa (4275 psi). It has a much higher load capacity than nylon, and its
compressive strength and clearances are not affected by water absorption.
VESCONITE does not swell
when exposed to water or humid conditions, while nylon can swell up to 3%
linearly when immersed.
The thermal expansion factor of
VESCONITE is only 2.5 times that of bronze, while nylon and HDPE are 5 to
10 times greater respectively.
VESCONITE therefore needs only
slightly more clearance than the corresponding metal parts. No allowance needs
to be made for moisture changes in most applications.
VESCONITE has outstanding dynamic friction, with a friction
coefficient of less than half bronze or nylon. This allows for higher
combinations of loads and speeds.
Greasing of VESCONITE bushes on assembly further
decreases friction, allowing higher speeds to be used and generally improving
Water is an excellent lubricant for VESCONITE,
making VESCONITE ideal for many immersed applications.
VESCONITE HILUBE offers
even further reduced friction (down by 50%), making it an ideal material for
VESCONITE's melting point of 260ºC (500ºF) is one of the highest
among thermoplastic materials.
VESCONITE is suitable for continuous use at 100ºC
(212ºF). For higher temperature applications, submit an enquiry
The low thermal conductivity of VESCONITE, common
to all synthetic materials, means that frictional heat is removed only slowly
through the bush.
One should avoid extreme heat build-up by first checking the PV (load
x speed) when designing a replacement for a bronze bush operating at a high PV
The PV limit of VESCONITE is about twice as high
as that of nylon and higher than most synthetic bearing materials.
MPa x m/min
loading limit MPa
of thermal expansion
% water absorption
Longer life of metal
The wear of metal pins and shafts is
reduced by up to 90% when VESCONITE bushes are used. Thus the high cost of
replacing expensive shafts and pins can often be saved. This valuable benefit
alone justifies the change over to VESCONITE in many applications.
VESCONITE is very resistant to dilute
acids, organic solvents, oils and petroleum. It has limited resistance to
strong acids and alkalis. Lengthy immersion in boiling water should be avoided.
See the Vesconite Chemical Resistance Chart for details.
Easy to machine
Vesconite machines easily on wood working
and metal working equipment, such as lathes, milling machines, bandsaws,
drilling machines, planers, spindle moulders and routers.
It is far easier to machine than bronze, steel,
nylon, acetal, UHMWPE or polyurethane based products.
The VESCONITE stock range includes hundreds of sizes of machineable
rods, bushings, plates, finished bushes, discs, washers and ready to use parts.
For the full range, see our Stock Range listings.
Vesconite range includes:
From 8 to 165 mm diameter (0.32" to 6.5").
We have an incredibly wide range of bushing stock (tube) suitable for
the smallest shafts up to 650 mm (26") diameter. Standard lengths are 1000 mm long (39.4"). Special lengths may be
Plates and Discs
Plates are mainly available in standard sizes 1000 mm long x 200 mm
wide (39.4" x 7.9") from 3 to 50 mm thick (0.12" to 1.97"),
as well as specially machined strips and sections.
Discs are produced in
diameters from 200 to 500 mm (7.9" to 19.7") and in thicknesses
ranging from 3 to 12 mm (0.12" to 0.5").
These include over 100 sizes of ready-to-use bushes in both metric
and imperial (American) sizes, while standard tooling allows production of many
more sizes of plain and flanged bushes from 3 mm to 650 mm inside diameter
(0.1" to 26") and washers up to 600 mm diameter (23.6").
Special factory services include:
- Moulding and machining of custom components to
your drawings and specifications, including extrusion and injection moulding,
turning, milling, drilling, thicknessing, cutting and joining.
- We offer a "One Stop" application
development service, assisting you with the development and testing of
initial prototypes to the mass production of proven parts.
- We can economically produce small quantities
of custom components using our specialised machining workshops, an extensive
stock of semi-finished materials and a wide range of injection moulds and
- Our workshop can reline very large wear parts
with VESCONITE strips. This saves the original expensive phosphor bronze
component and makes it better than new.
- New parts can also be produced from cheaper
metals and lined with VESCONITE.
- For new and difficult applications, if
the quantities required justify the development, we can research special
formulations and materials, building on our on-going technical developments.
Vesconite at work
Over the years customers have successfully used Vesconite in
thousands of applications, saving themselves money, time and greasing. Here are
some typical applications. Use our Enquiry Form for technical advice on your
application. Perhaps we have experience of a similar application. Help is just a
Heavy transport (trailers,
Bogie, trunnion and pivot bushes, thrust washers, bushes for leaf spring
shackles, air brake cams, steering, kingpins.
Earth moving equipment
Articulating dump truck bushes, front end loader arm bushes, idler
wheel bushes in tracked vehicles, pivot points, road grader bushes.
See our Earth Moving
Piston neck ring bushes, varied wearing and guide parts, clevis pin
Loco motor axle bushes, steam loco side rod bushes, raise borer
column guides, winch bearings and thrust rings, rotary filter components, sheave
wheel bushes, hopper car bushes, mill.
See our Mining
Rudder bearings, cutless bearings, propeller shaft bushes, sheave
bushes, water pump piston rings, dredgers.
Bogie and braking system bushes, tram and battery locomotive motor
axle bushes, centre guides, doorway guides, pantograph bushes, signal sheave
wheel bushes, switch gear bushes.
Bushes for sluice gates and rollers, water meters, rollers.
Bushes for rotary sprinklers, disc ploughs, tractor king pins, lawn
mower wheels, refurbishment of Monosem planters.
See our Agriculture Applications
Rubber masticating mill bushes.
Bushes for loom parts of all types, frame link guides.
Overhead roller bushes.
Guide shoes and blocks.
Rotary Air Motors and Vacuum
Vanes and blades in a wide range of sizes for rotary air motors and
Petrol pump vanes.
Conveyor roller bushes, screw conveyor hanger bushes, wear strips and
Wheel bushes, castor wheel bearings, pallet trucks, scissor lifts,
fork lift components.
Foot step bearing and disc pads, brick making machine bushes.
Pumps and valves
Plunger pump neck rings, protection plates of multi-stage centrifugal
pumps, steady bearings, wear plates, bushes in vertical spindle pumps, butterfly
valve spindle bushes.
Order your own Pump Bearing Design Manual