High-Load Half-Bearing Shell Steel PTFE & POM Composite Bushings are mechanical components designed to provide smooth and wear-resistant movement under heavy loads. These bushings are typically made of a steel shell that encapsulates a composite material consisting of Polytetrafluoroethylene (PTFE) and Polyoxymethylene (POM).
PTFE, known for its excellent lubrication properties and low friction coefficient, provides a smooth sliding surface for the bushing. POM, on the other hand, offers good mechanical strength and rigidity, making the composite material suitable for high-load applications.
The steel shell of these bushings adds structural support and durability, enabling them to withstand heavy loads and frequent movement. The combination of PTFE and POM within the composite material ensures that the bushings maintain their lubricity and wear resistance over extended periods of use.
High-Load Half-Bearing Shell Steel PTFE & POM Composite Bushings are commonly used in various industrial applications, including automotive, aerospace, and heavy machinery, where smooth and reliable movement under high loads is crucial.
 

Steel-Backed - PTFE Lined Bearings Custom Designed and Manufactured Bearings and Bushings

 
High-load half barings PTFE/POM self-lubricating  standard size qoute
Bearing shell made to order from china,which is the part in contact between sliding bearing and shaft journal, is a shingle-shaped semi-cylinder, which is very smooth. It is generally made of bronze, friction reducing alloy, low carbon steel, PTFE/POM and other wear-resistant materials.Half bearings which present excellent seizure resistance with the best load resistance.Steel/PTFE composite bearing, in 1/4,1/3,1/2,or other sizes.
Bearing bush has integral and split type two, the integral bearing bush is usually called Bushing.Integral bearing bush without oil groove and there are two kinds of oil groove.The bearing bush and the shaft neck adopt clearance fit, generally do not rotate with the shaft.
Bearing, Half Bearing, Plate, Washer made to order from china.Half bearings which present excellent seizure resistance with the best load resistance.
A mixture of PTFE and special fillers achieves both and abrasion-resistance and low-friction coefficient.
Lead-free oilless resin bearings.
Providing customers of Composite bearing with the capability to reduce the risk of unplanned downtime, extend asset life, improve performance levels and cut down on overall maintenance costs.This is structured with a triple layered material, which contains sintered bronze powder and special fillers with PTFE on a steel back plate.This is a boundary lubricating bearing that performs the best against abrasion.It employs toughening agent, lead, and tin alloy with PTFE on surface layer for better durability.
Introduction

Movement characteristics

When the sliding bearing is working, a thin oil film between the bush and the shaft is required for lubrication.If the lubrication is not good, there will be direct friction between the bush and the shaft, friction will produce very high temperature, although the bush is made of special high-temperature alloy material, but the high temperature caused by direct friction is still enough to burn it out.The bearing shell may also be burned due to excessive load, high temperature, impurities in the lubricating oil or abnormal viscosity and other factors.The sliding bearings were damaged when the tiles were burned.
 

Half barings Manufacture

 
Thick-walled bushes can be cast to improve the friction performance by pouring a layer of bearing alloy (called bearing lining) on the inner surface of the bush.In order to make bearing alloy and bearing bush stick well, various forms of mortise, groove or thread are usually made on the inner surface of bearing bush.Thin - wall bearing bush can be produced in large quantity by continuous rolling of bimetallic plate.
Powder metallurgy involves mixing basic materials, such as powdered iron or copper, with graphite and then pressing and sintering.Its pores can store lubricating oil, called oily bearing.
Bearing bush material is usually soft, the inner cylinder is not suitable for grinding, can be boring, diamond boring, scraping or grinding process.Grinding should not use the method of matching with the shaft diameter, but should use a special lapping rod of the same size as the shaft bush hole.Scraping is mostly used for some tile bearings, scraping with wide blade scraper machine.When scraping by hand, the scratch should be shallow.Bearing bush with complicated inner surface should be boring in a special way according to the specific shape.
 

Half Sliding Bush Material Editing

Bearing shell material is characterized by low friction coefficient, sufficient fatigue strength, good running-in and good corrosion resistance.Common bearing bush materials include self-lubricating bearing materials (PTFE), copper alloy, wear-resistant composite bearing materials, etc.
Non-lubricated bearing bush materials mainly include polymer, carbon graphite and special ceramics.
Polymer Sliding Bush
Polymer also known as organic polymer materials, engineering plastics.Common materials are phenolic resin, nylon, PTFE and so on.Non-lubricated bearings made of plastics (such as PTFE) are resistant to strong acids and weak alkalis, with good insert, abrasion reduction and abrasion resistance.The ptfe sheet is pressed into lip sealing ring, bearing bush, piston ring and gasket, which are used in belt conveyor, typewriter, sewing machine, electric phonograph disc, water pump, textile machinery and agricultural machinery.
Polymer has the characteristics of light weight, insulation, friction reduction, wear resistance, self-lubrication, corrosion resistance, simple molding process, high production efficiency.Compared with metal materials, their tribological properties are sensitive to ambient temperature and humidity, and have significant viscoelastic properties, so the gap between bearing bush and journal is large.Because of its low mechanical strength, small elastic modulus, poor absorption of lubricating oil, and limit the working speed and pressure value of bearing bush.
Related Products Graphite Bronze Bushing
The sliding bearing thurst washer & plate - graphite material can be used in harsh environment.The more graphite, the softer the material, the smaller the friction coefficient.

Metal Bearing

Metal bearing is an important part to support a connecting rod and a crankshaft to rotate in an engine for automobiles, motorcycles, construction machinery or ships.
Half bearing is divided into two parts to cope with the complex shape of the installation point.
 

Metal Bearings Lead Bronze

Good in abrasion resistance, load resistance, impact resistance, and heat resistance. It can be used for places where the speed and the load would be a problem.
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