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
Compressor identity
Use the exact compressor model, controller and approved service documentation.
Control and power
Review rotor-position control, sensors, power provisions and the equipment's shutdown strategy.
Backup support
Identify the specified touchdown bearing assembly and inspection/replacement criteria.
Which bearing structures make sense?
Active magnetic supports
Evaluate only as part of the compressor's designed control system.
Check first: Do not treat magnetic load capacity as an ordinary rolling-bearing C rating.
Touchdown/backup bearings
Use the exact approved assembly and service criteria.
Check first: Ordinary catalogue bearings are not approved simply because they fit a shaft.
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 complete compressor and control-system revision.
- Review operating envelope and recorded alarms through the approved service procedure.
- Verify sensor, actuator and backup-support requirements as an integrated system.
- Follow authorized commissioning and rotor-control checks.
Symptoms worth checking
Rotor-position or touchdown alarms
Use the compressor's prescribed diagnostic and inspection process.
Unexpected vibration
Evaluate controls, rotor condition and system operation rather than adding lubricant.
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
Do magnetic-bearing chillers need bearing grease?
The magnetic support is designed for non-contact operation; follow the specific compressor's instructions. Do not add grease to an oil-free system on the basis of generic bearing advice.
Can a standard rolling bearing replace a magnetic support?
No. The mechanical and control architectures are fundamentally different.
Reference basis & recommendation limits
- Danfoss — Turbocor oil-free magnetic-bearing compressor programme
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.