Keep the evidence with the model shortlist
The models on this page illustrate bearing roles; they are not confirmed replacements for an unspecified machine. Keep the original complete marking, machine position, load and speed duty, temperature, lubricant and mounting arrangement together. Check the candidate's recorded values below and leave unreported parameters unknown.
Check drawings and model records · Investigate a failure before replacing it · Plan installation and force paths
What matters in this application
Architecture
Identify linear pads, bushings, rotary spindle supports or vacuum-preloaded elements.
Gas supply
Use the maker's air quality, pressure, flow and supply-loss requirements.
Mechanical interface
Check guide-surface finish, flatness, mounting, load/moment capacity and required stiffness.
Which bearing structures make sense?
Aerostatic guide supports
Consider for designed low-friction precision guidance.
Check first: The support, guide surfaces and clean/dry air system must be evaluated together.
Air spindle systems
Use a complete spindle design for the specified speed and load.
Check first: A rolling-bearing dimension cannot define a substitute air-bearing spindle.
Model selection & data availability
Use the selection requirements below to identify the exact specification. A general-purpose bearing is not presented as a substitute for an unverified specialist design.
Search an existing designation →Work through the selection
- Identify the motion architecture, load directions and accuracy requirement.
- Obtain the component's film, load/stiffness and gas-supply specifications.
- Verify guide surfaces, mounting and the required supply-loss protections.
- Commission using the manufacturer's approved air-supply and motion checks.
Symptoms worth checking
Stiction or disturbed motion
Inspect supply condition, surfaces and alignment through the maker's procedure.
Poor repeatability
Check structural stiffness, thermal conditions and metrology as well as the bearing film.
Symptoms are investigation prompts, not a diagnosis. Isolate equipment safely and follow its maintenance procedures before inspection.
Have the original designation?
Look up the complete model and suffix before comparing potential alternatives.
Application questions, answered
Is a CMM air bearing interchangeable with a linear ball bearing?
No. Guide surfaces, stiffness, mounting and gas-supply requirements differ.
Can ordinary shop air always be used?
No. Follow the bearing manufacturer's specified cleaning, drying, pressure and filtration requirements.
Reference basis & recommendation limits
- New Way Air Bearings — Care and Air
Application principles are informed by the listed technical references. Model shortlists are BearingScope editorial selections from its database, not manufacturer endorsements or equipment-fit approvals. Confirm the latest exact specification and the complete equipment design before use.