C90800 Bush CuSn12 Tin Bronze Graphite Plugged Bushing
C90800 Tin Bronze CNC Machined Flanged Shaft Turned Bushing Brass
Bearing
✅ Clarified Breakdown in English:
1. Tin Bronze Bushing
Refers to a sliding bearing (bushing) made of tin bronze alloy
Tin bronze is commonly used in high-load and wear-resistant applications
Well-known for its good corrosion resistance, wear resistance, and self-lubricating
properties
2. C90800
3. CNC Machined
The part is manufactured using CNC (Computer Numerical Control) machining
Ensures high precision, smooth surface finish, and tight dimensional tolerances
4. Flanged Shaft
Refers to a shaft or bushing with an integrated flange
The flange helps in:
In this context, it's likely a flanged bushing that fits on a shaft
5. Turned Bushing
6. Brass Bearing
Tin Bronze Graphite Plugged Bushings C90800 CuSn12 are
high-performance bearing components that offer exceptional wear
resistance and lubrication properties. These bushings are made from
tin bronze alloy C90800, also known as CuSn12, which combines the
strength and corrosion resistance of bronze with the lubricating
benefits of graphite.
The graphite plugs within the bushings provide additional
lubrication, reducing friction and enhancing the overall
performance of the bearing. This design ensures smooth and reliable
operation, even under high loads and speeds.
Tin Bronze Graphite Plugged Bushings C90800 CuSn12 are suitable for
a wide range of industrial applications, including valves, pumps,
and other machinery where high-performance bearings are required.
Their durability and reliability make them a cost-effective
solution for reducing maintenance and extending the service life of
equipment.
C90800 Bush CuSn12 Tin Bronze Graphite Plugged Bushing

Type | 500#-1 | 500#-2 | 500#-3 |
Material | CuZn25AI5Mn4Fe3 | CuSn5Pb5Zn5 | CuSn12 |
Density | 7.8 | 8.9 | 8.9 |
HB Hardness | ≥210 | ≥70 | ≥75 |
Tensile Strength MPa | ≥750 | ≥250 | ≥270 |
Yield Strength MPa | ≥450 | ≥90 | ≥150 |
Elongation % | ≥12 | ≥13 | ≥5 |
Thermal Expansion Coefficient | 1.9x10-5/°C | 1.8x10-5/°C | 1.8x10-5/°C |
Max. Operation Temp. | -40~+250°C | |
Max. load MPa | 50 | |
Max. speed m/s | Dry | 0.5 | |
Lubricated | 1 | |
Max. PV (N/mm2*m/s) | Dry | 1.65 | |
Lubricated | 3.25 | |
Material: CuSn12 Bronze with graphite
Material: CuSn12 Bronze with graphite
graphite plugged bronze bearings
Symbol:C90800 Tin Bronze Graphite Plugged Bushing
Number:Tin Bronze Graphite Plugged Bushing
Category:ASTM Casting Copper Alloy
Type:Tin Bronze
| Chemical Composition mass/% |
|---|
| Cu | Sn | Al | Fe | Mn | Ni | Pb | Si | P | Zn |
| 85.0-89.0 | 11-13.0 | 0.01 | 0.15 | - | 0.5 | 0.25 | 0.01 | 0.3 | 0.25 |
| Mechanical properties |
|---|
| Tensile strength Mpa(Min) | Yield strength MPa(Min) | Elongation % | Brinell hardness(HB) |
| 280 | 150 | 5 | 90 |
SELF-LUBRICATING METRIC BRONZE BEARINGS FABRICATED.128.60/128.64 mm
ID x 137.54/137.58 mm OD x 168 mm Long size
- Graphite Bronze Bearings|Straight, Flanged, Washers, Guide Pin,
Guide Ejector, Guide Post, Spherical-Imperial line bushings
(dimensions in inches)
sleeve bearing Graphite
self-lubricating bearing.pdf
Graphite Bronze Split Bush
Truck Bushings oilless bushing,oil-free bronze bush bearing
- Copper Alloy Straight, Standard / Thin Wall, I.D. F7 O.D. m6
Product Description
Our present position in the industry is chiefly attributable to our
specifically designed Graphite Bronze Split Bush from our exclusive collection of products
Graphite bronze bearings are a substrate of carbon steel, bronze
powder, , fiber and other materials through a special process to
produce self-lubricating products, with the characteristics of
environmental protection
The solid inlaid bearing is on a brass matrix.A high performance
solid lubricant inlaid with graphite or MoS2 solid lubricant.It
breaks through the limitation that the general Graphite Bronze
Bearings depends on oil film lubrication.In the process of use, the
friction heat makes solid lubrication and shaft friction, forming
an excellent condition for oil and powder to coexist lubrication,
which not only protects shaft from wear, but also makes solid
lubrication characteristics eternal.Its hardness is twice as high
as that of ordinary copper sheath, and its wear resistance is also
twice as high.At present, the Graphite Bronze Bearings product has
been used in metallurgy continuous casting machine, train support,
steel rolling equipment, mining machinery, ships, gas turbines and
other high temperature, high load, low speed heavy load and other
occasions.
oilles bearing model
Graphite Bronze Bearings | High Quality, Factory Price
Body Lifts and Bushing at Wholesale Prices
Graphite Bronze Bearings Material
-Bronze with solid lubricant, oilless lubricating
Self Lubricated Graphite Bronze Bearings Features
·Self Lubricated Bearings to 450°
·Self Lubricating
·Performs well in High load, low speed operations
·Resists corrosive and and hostile environments.
·Excellent performance in medium to high temperature (up to 600°).
·Comparable with most viscous lubricants, oils, and grease
applications.
Replacement 500 SPB BRONZE BEARINGS SERIES BRONZE BUSHING plugged
graphite size sheet:
Description
Graphite Bronze Bearing-Imperial line bushings (dimensions in
inches)
Graphite Bronze Bearing are metal backed with bronze alloy graphite
oil-less bushings.
These are multi-layer composite bearings made of a special sintered
material used as sliding surfaces and a steel material as a support
metal. The sintered layers are made of a special copper-nickel
alloy containing a uniformly dispersed solid lubricant, the main
component of which is graphite. Solid lubricants will be released
to the surface of the ring as they wear, which will ensure a lower
coefficient of friction during operation. In addition, these
sintered layers were treated by the oil impregnation treatment.
Features
1.no oil supply device, oil hole, oil groove
The cost of the fuel supply system, the cost of processing,
assembling, and so on, can greatly reduce the cost of
manufacturing.
2.Operation cost reduction
Greatly reduce the use of lubricating oil and equipment maintenance
costs, but also exempt from the risk caused by the shortage of oil.
3.design time shortened
No oil can make the design, structure is greatly simplified, reduce
costs, save design time. In addition, using self-lubricating
bearings can also improve the mechanical properties and prolong get
remarkable results using life and improve the reliability.
4.recovery and environmental protection of lubricant
No need to waste oil recycling, is conducive to environmental
protection.
Use notes
1.In the possible case, the design uses the standard specification
as far as possible;
2.Please note that there is no foreign body in the assembly;
3.After using the sliding surface, formed by solid lubricant oil
film in surface with black or gray black phenomenon, please do not
scrub, as usual.
4.Before the assembly, if the lubricating oil applied to the
grinding parts, can shorten the running in period, conducive to the
operation of machinery, operation;
5.When the assembly should be slowly pressed into, it is strictly
forbidden to beat, so as to avoid damage to the Graphite Bronze
Bearings and deformation;
6.Design, different parts should be selected with appropriate
material, in order to improve the mechanical performance, to extend
the service life of the Graphite Bronze Bearings;
7.In the high load, reciprocating motion, the proposed use of screw
fixation;
8.In fresh water, sea water and in the sea, on the use of stainless
steel or surface plating.
Characteristic
1. Flexible, simple, convenient design with wide applications
2. FunctionaI in absence of oiI
3. Cost efficiency
4. Excellent performance under high load and low speed
circumstances
5. In circumstances where it is difficult to generate hi-films,
such as reciprocating movements, rotating movements and frequent
on-off, Graphite Bronze Bearings highlights its excellent abrasion resistance.
6. Excellent chemical resistance and corrosion resistance
Specifications
Type | 500#-1 | 500#-2 | 500#-3 |
Material | CuZn25AI5Mn4Fe3 | CuSn5Pb5Zn5 | CuSn12 |
Density | 7.8 | 8.9 | 8.9 |
HB Hardness | ≥210 | ≥70 | ≥75 |
Tensile Strength MPa | ≥750 | ≥250 | ≥270 |
Yield Strength MPa | ≥450 | ≥90 | ≥150 |
Elongation % | ≥12 | ≥13 | ≥5 |
Thermal Expansion Coefficient | 1.9x10-5/°C | 1.8x10-5/°C | 1.8x10-5/°C |
Max. Operation Temp. | -40~+250°C | |
Max. load MPa | 50 | |
Max. speed m/s | Dry | 0.5 | |
Lubricated | 1 | |
Max. PV (N/mm2*m/s) | Dry | 1.65 | |
Lubricated | 3.25 | |

Application field
·Hardware
·steel manufacturing
·stamping die
·automobile industry tools
·Stamping
·others
Graphite Bronze Bearings is widely used in high load applications
where lower friction and good wear resistance are required and
where lubrication is difficult. Some examples include wear plates
for automobiles, industrial robots, wear plates for injection,
injection bolt bushings and self-lubricating bushings for
construction equipment.
Bearing Type
·Guide bushing
·fixture
·half bearing bush
·Wear plate
·gasket
·guide plate
·Others
Custom Design
All kinds of sliding elements can be supplied or produced on
request.
Please contact us for more information.
WE ARE A PROFESSIONAL
SELF-LUBRICATING BEARING MANUFACTURER & SUPPLIER
GET A FREE QUOTE ONLINE NOW !