Non lubricated bearings Bearing Materials

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Bush material non-lubricated bearings are mainly three categories of polymer, carbon, graphite and special ceramics.sealed ball bearing

(1) Polymer P olymer, also known as plastic, the use of plastic material as a mechanical engineering is called engineering plastics. It is based on a synthetic resin as a main component, also contain various plasticizers, stabilizers, antioxidants, antistatic agents, flame retardants, curing agents, reinforcements and fillers organic polymer material.

Many types of polymer, its characteristics is divided into thermoplastic and thermoset two categories.

Thermoplastic polymers are mainly used: polyamide, polyacetal, polyethylene, polytetrafluoroethylene, polypropylene, polyurethane, etc.. They are organic polymers, having a linear or branched chain-like structure can be repeatedly heat-softened, and cools and hardens. Thermoplastics available process methods such as injection molding, extrusion, blow molding, calender molding.

Thermosetting polymers commonly used are phenolic resins, epoxy resins, etc.. They are added in the process of the catalyst or curing agent to cure, once the cure is completed, it becomes always solid material can not be molten. The thermosetting polymers can be used compression molding, laminating, casting, molding methods.ball bearing supplier

Commonly made of plastic bearings, guide, piston ring friction pairs Part, such as the water pump bearings, rolling mill bearings, stern bearing, especially plastic production lubricated bearings. PTFE sheet was punched into the lip seals, bearings, piston rings and gaskets, successfully applied to the belt conveyor, typewriters, sewing machines, phonographs, turntables, pumps, textile machinery and agricultural machinery and other equipment .

Polymers with light, insulation, anti-friction, wear-resistant, self-lubricating, corrosion-resistant, simple molding process, high production efficiency. And metal materials, their tribological properties of the ambient temperature and humidity sen sitive, related to the viscoelastic properties significantly, the end of the mechanical strength, elastic modulus is small, the differential adsorption of the lubricant.