Air Bearing

AirBearing Manufacturers & Suppliers

AirBearing Manufacturers & Suppliers

An air bearing is a device that is designed to be inflated with compressed air to initially form a seal with the floor surface and, with further inflation, to create a thin film of air between the bearing and the floor surface causing the air bearing to float in a similar way to a hovercraft. We can also say that an air bearing is a non-contacting system where air acts as the lubricant that separates the two surfaces in relative motion.

Air bearings have the following characteristics and advantages:

Minimal friction and high accuracy over a wide speed range

No oil or grease lubrication

No wear

Air Bearing : technology offers real advantages to applications where the demand for accuracy, speed and reliability is crucial.

The performance given by West wind air bearing technology regularly exceeds the parameters offered by conventional bearing systems, with speeds ranging from 0 to 300,000 rpm, powers range from 10w to 30kw, load capacities of up to 150 kg radial and 500 kg axial, and bearing stiffnesss of up to 12kg/m radial and 50 kg/m axial.

An air bearing cannot work on its own. It is designed to be fitted into a load module that is strong enough to hold out heavy loads being placed upon it. An air bearing also needs to have some sort of air flow control. This is usually done by way of an air flow control valve fitted into the load module or via a remote control system.

There are two types of air bearing systems:

Aerostatic and Aerodynamic air bearing :

Benefits of using an Air Bearing:

Potentially unlimited bearing life

Air bearings are completely non contact, unless misused or abused, they do not wear. With a brushless motor, and an optical encoder the rotating element is non contact.

No break-in period

Since bearing wear is eliminated, there is no bearing break-in period. Bearing life is virtually limitless.

High operational speeds without vibration

With dual plane balancing and frictionless performance your equipment can operate at high velocity without the threat of vibration allowing your equipment to perform more quickly and more accurately.

Frictionless performance

Non contact rotation means frictionless performance.

Very stiff bearings and dual plane balancing eliminate

Vibration and deliver exceptional rotational accuracies.

Greater machine throughput

With wear eliminated, down-time related to bearings is

Eliminated. Reduced maintenance and downtime equals

Greater machine usage.

by: kemchho

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