Du Bush

Product Details:

Normally, the surface polymer of AKMET is of chemical-erosion resistant quality. However it can be eroded bv fused alkali metal and high temperature fluorine compounds. Therefore its erosion-prevention quality is primarily decided by the quality of the steel back and its plating layer. Air-erosion could be effectively prevented if the steel back is bronze or tin-plated. If the bush is to be used in corrosive environment, the steel back needs to be plated with lead, zinc, nickel or nickel-chrome alloy, etc.

AKMET is of much lower friction coefficient. Friction coefficient may relatively become smaller under heavier load. When the load pressure is more than 7Mpa, its friction coefficient may reduce to 0.05 or smaller.
Anti-abrasion Performance
AKMET is of excellent anti-abrasion performance, mainly due to die particular molecule structure of PTFE.
The abrasion process can be generally divided into three phases 1. "Running-in" phrase: PTFE compound on the bush is transferred to its mating surface and forms a lubricating film. At this phase, the friction coefficient is bigger, thus the abrasion pace is very quick, See the curve showed in area I of the graph.
"Running-in" phrase: PTFE compound on the bush is transferred to its mating surface and forms a lubricating film. At this phase, the friction coefficient is bigger, thus the abrasion pace is very quick, See the curve showed in area I of the graph.
2. ''Stabilization* abrasion phrase: After the ''Running-in phase'', the friction liappens between PTFE and PTFE, thus the friction coefficient is smaller and keeps steady. As a result, the wear rate is low and steady, bee the curve showed in area II of the graph.
3. "Slurp" abrasion phrase: As PTFE in the porous layer is slowly consumed up, not enough lubricant can be supplied to the gliding media. Friction coefficient .UK! wear rate will rapidly rise. When 70% uf the bronze surface is exposed, service life of AKMET closes to its end. See the curve showed in area III of the graph.
The Advantages of Self-Lubricating Bushings 

• Elimination Of Oil Holes And Grooves - Cost for machining oil holes and oil grooves is unnecessary. Self-lubricating eliminates the need for the extra oiling system. 

• Reduction Of The Machinery Running Cost - With maintenance free features, the lubricant oil is dramatically reduced; machineryrunning cost will also be decreased. 

• Maintenance Free Operation - Self-lubricating bushings solve the problem of oiling operation and oiling devices, also saving bearingmaintenance costs.

• The Environment Is Protected - The self-lubricating bearing materials work without oil and meet the ROHS directive.

Applications

Toggle link bearings for injection machines * Arm link bearings for power shovels * Bearings for use in conditions of high load, low velocity and self-lub, such as dam gate and water gate bushings * Bearings for underwater use like a guide vane bearings of turbine * Bearings for use at a high temperature, including iron and manufacturing machineries * Bearings for use in strong radioactive environment, e.g. Nuclear power plant * Hydraulic steel structures * Offshore industry * Ship building * Power stations and reactors * Iron and steel mills * Heavy engineering * Mining nConstruction and earth moving machinery * Crane and conveyor systems * Civil engineering bridges pipelines etc. * Where thermal expansion has to be absorbed.

Product Details:

The price depend on size.Bushing bearings, also known as dry bearings or DU bearings, belong to a Bushing series, and are a type of sliding bearing known for their excellent self-lubricating properties. These bearings are composed of multiple layers, collectively providing stable and maintenance-free operation.