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
Machine and position
Identify the exact rotating support and refer to its pump, compressor or gearbox duty.
Environment
Separate process-fluid contact from external salt, moisture and washdown exposure.
Operational requirements
Use the equipment's load, lubrication, monitoring and service requirements, including any applicable site safety controls.
Which bearing structures make sense?
Specified pump/compressor supports
Start with the approved full equipment-bearing specification.
Check first: A general angular-contact model does not establish process-fluid compatibility.
Protected auxiliary supports
Evaluate load capacity together with corrosion and sealing design.
Check first: A stainless or sealed suffix is not hazardous-area equipment certification.
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 machine, support position and controlling equipment specification.
- Record process/external exposure and the full load/speed duty.
- Verify material, lubricant, seals and monitoring as a complete arrangement.
- Follow the site's approved installation and commissioning process.
Symptoms worth checking
Lubricant contamination
Determine whether contamination originates in the process, environment or oil supply.
Recurring hot running
Review alignment, thrust setting, oil delivery and the operating duty.
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 there a universal offshore bearing grade?
No. The correct construction depends on the specific machine, exposure and equipment requirements.
Does the site certify a bearing for hazardous-area service?
No. It provides technical reference data; equipment certification and approval are separate requirements.
Reference basis & recommendation limits
- NSK — Bearings for the Petrochemical Industry
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.