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
Approved identity
Use the approved equipment/assembly part number, drawing revision and full bearing specification.
Environment and duty
Record rotation or oscillation, loads, temperature, lubrication and environmental exposure for the exact position.
Quality evidence
Require the specified traceability, material/process records, inspection and airworthiness controls.
Which bearing structures make sense?
Rolling-element supports
Evaluate only against the approved engine, accessory or wheel design.
Check first: Standard dimensions or a commercial precision grade do not establish flight qualification.
Spherical plain bearings and rod ends
Review oscillating motion, play, liner/material and attachment interfaces.
Check first: A similar industrial rod end is not an approved aircraft substitution.
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 exact aircraft subsystem and approved component record.
- Compare full design and environmental requirements, not just dimensions.
- Verify qualified supply and traceability under the applicable maintenance/design process.
- Use authorized installation, inspection and release procedures.
Symptoms worth checking
Unexpected play or surface damage
Follow the applicable inspection limits and maintenance instructions.
Lubricant mismatch
Check the approved lubricant and compatibility requirements before any substitution.
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
Can this database approve an aircraft bearing replacement?
No. It is an independent technical reference, not an approved-parts or airworthiness system.
Why are ordinary model recommendations omitted?
The available catalogue data does not establish aerospace qualification for the assembly. A generic recommendation would imply unsupported approval.
Reference basis & recommendation limits
- NSK — Motion & Control business: aerospace and industrial applications
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.