plastic spherical plain bearing

Deep groove ball bearing with seals or shields

Single row deep groove ball bearings with seals or shields are particularly versatile, have low friction and are optimized for low noise and low vibration, which enables high rotational speeds. They accommodate radial and axial loads in both directions, are easy to mount, and require less maintenance than many other bearing types. The integral sealing can significantly prolong bearing service life because it keeps lubricant in the bearings and contaminants out.Integral sea

ling prolongs bearing service life

Simple, versatile and robust design

Low friction and high-speed capability

Accommodate radial and axial loads in both directions

Require little maintenance

Knowledge and introduction of bearings    :                                                                                                 

Plastic spherical plain bearings are a type of bearing that combines the functionality of traditional spherical plain bearings with the advantages of plastic materials. Here's a detailed introduction to plastic spherical plain bearings:

What Are Plastic Spherical Plain Bearings?

Plastic spherical plain bearings are designed to accommodate shafts or rods with varying amounts of misalignment. They are engineered to manage high radial loads and provide consistent performance under conditions of marginal lubrication, extreme speed, and critical-application stress. These bearings typically consist of a plain bearing and ball bushing inside a lined, cylindrical housing that minimizes friction or provides self-lubrication.

Key Features

• Material: Typically, the metal balls and liners of spherical plain bearings are made of steel, bronze, or iron, while non-metallic balls and liners are usually made of plastic, nylon, or polytetrafluoroethylene (PTFE). Plastic materials offer superior performance, self-lubrication, and corrosion resistance compared to conventional materials.

• Low Friction: Plastic spherical plain bearings have low friction characteristics, which is beneficial in applications where minimal resistance is required.

• Self-Lubrication: Many plastic spherical plain bearings are self-lubricating, reducing the need for regular maintenance and lubrication.

• Corrosion Resistance: Plastic materials used in these bearings provide inherent corrosion resistance, making them suitable for use in environments where metal bearings would corrode.

Applications

Plastic spherical plain bearings are used in a variety of applications that involve swivel movements, high alternating loads, high shock loads, and very high radial loads with unilateral load direction. They are found in railway engineering, bridge building, construction machinery, hydraulic steel structures, roof designs, power generation, oil field exploration, mining, wind turbines, gear drives, and rolling mills. They are also used in the aerospace industry for wing flaps, engine mounts, and hatches and joints.

Maintenance

One of the significant advantages of plastic spherical plain bearings is that they are relatively maintenance-free. This is particularly beneficial in applications where accessibility for maintenance is limited or where downtime is costly.

Performance Specifications

When selecting plastic spherical plain bearings, important physical dimensions to consider include bore diameter, bearing thickness or length-through-bore, and outside diameter. Performance specifications include radial load capacity and maximum angular misalignment, which is the amount of bearing swing from the normal or aligned condition.

Standards and Customization

Plastic spherical plain bearings are subject to standards such as DIN ISO 12240-1, which specifies dimensional series, dimensions, tolerances, and radial internal clearance. Manufacturers like CSB are leading producers of these bearings, offering a wide range of variants and designs, including maintenance-free options with PTFE film and stainless steel variants. Custom solutions can also be developed for specific applications, showcasing the flexibility and adaptability of plastic spherical plain bearings.

In summary, plastic spherical plain bearings offer a reliable and low-maintenance solution for applications requiring high radial loads, misalignment compensation, and resistance to corrosion. Their self-lubricating properties and wide range of applications make them a popular choice in many industries.

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