Antiseizure Metallic Self-Lubricating Bronze Bushings CSB-820 are a
specialized type of bushing designed to provide exceptional
lubrication and seizure resistance. These bushings are made of a
bronze alloy that incorporates self-lubricating materials, enabling
them to operate smoothly even in conditions where external
lubrication is limited or unavailable.
The bronze material used in CSB-820 bushings offers excellent
strength, wear resistance, and corrosion resistance, ensuring
durability and long-term performance. The self-lubricating
properties of the material help reduce friction and wear, further
extending the bushings' lifespan.
The antiseizure design of these bushings is particularly beneficial
in applications where seizure due to lack of lubrication or high
temperatures can be a problem. They are able to maintain a stable
and reliable operation even under extreme conditions, minimizing
the risk of downtime and maintenance issues.
CSB-820 bushings are widely used in a variety of industries,
including machinery, automotive, and aerospace, where their ability
to operate reliably without the need for frequent lubrication is
highly valued. Wh it's in high-speed rotating equipment or
heavy-duty industrial machinery, CSB-820 bushings provide a robust
and effective solution for antiseizure and self-lubricating needs.
Alloy With Nickle/ Bismuth Metallic Marginal-Lubricating Bearings
> CSB-820/827
Alloy with Nickle/ Bismuth Metallic marginal-lubricating bearings
Features
The lead free bronze lead alloys include two different materials.
CSB-820 is an alloy with Nickle content and CSB-827 is an alloy with Bismuth content. These materials have low friction coefficients and good
wear resistance and they are suitable for lubricated working
conditions. To improve the lubricating performance, oil grooves or
oil deposits could be optional designs.

Structure:
1. Lead Free Sintered Bronze Alloy, provides good self lubricating
feature and has good fatigue resistance and anti-seizure feature.
2. Steel Backing, provides the mechanical strength of the bearing.
Bismuth bronze
Bismuth bronze or bismuth brass is a copper alloy which typically
contains 1-3% bismuth by weight, although some alloys contain over
6% Bi. This bronze alloy is very corrosion-resistant, a property
which makes it suitable for use in environments such as the ocean.
Bismuth bronzes and brasses are more malleable, thermally
conductive, and polish better than regular brasses. The most common
industrial application of these metals are as bearings, however the
material has been in use since the late nineteenth century as
kitchenware and mirrors. Bismuth bronze was also found in
ceremonial Inca knives at Machu Picchu.[1] Recently, pressure for
the substitution of hazardous metals has increased and with it
bismuth bronze is being marketed as a green alternative to leaded
bronze bearings and bushings.
Bimetal-bearing is a bimetal bearing, wrapped of steel sheets with
a layer of lead bronze.
The standard sizes are fitted with lubrication indents on the
running surface. For standard bearings is normally the steel
backing copper plated to improve the corrosion resistance. The
layer of lead bronze makes it possible to use these bearings with
relative long lubrication intervals.
Bimetal-bearings can be manufactured with a thicker lead bronze
layer for applications where the bearing has to be machined after
mounting. The material of the layer can be fitted to the special
needs for the application in question.
Tech. Data
Max. Load | Static | 250N/mm² | | Alloy Hardness | ≥HB70 |
Dynamic | 140N/mm² | Operation Temperature range | -40°C~+ 250°C |
Max. Speed (lubricated) | 2.5m/s | Friction coefficient | 0.05~0.20 |
Max. PV | 2.8N/mm²*m/s | Thermal conductivity | 60W(m*K)-1 |
Tensile Strength | 350N/mm² | Coefficient of thermal expansion | 14*10-6*K-1 |
Usage Range |
dry | poor | oil lubricated | good | grease lubricated | good | water lubricated | poor | process fluid lubricated | poor |
|
Typical Applications
These materials are suitable for using under middle load and middle
to low speed conditions. The good embeddability of the alloy
provides anti-dust feature of the bearings. The bearings can be
used under dust environment and where containments existed. The
typical applications include connection rods, undercarriage
rollers, hydraulic cylinder rod eyes, material handling machinery,
agriculture machinery, forest machinery and so on.
