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
Support architecture
Identify journal, tilting-pad thrust, rolling, gas or other support types at each position.
Operating envelope
Include start-up, shutdown, overspeed cases, loads, temperature and rotor dynamic requirements.
Lubrication and protection
Verify oil/working-fluid supply, backup provisions and the manufacturer's protection/monitoring system.
Which bearing structures make sense?
Fluid-film journal and thrust supports
Use the turbine-specific film, stability and thermal calculations.
Check first: Rolling-bearing C/P life calculations do not validate these supports.
Specified rolling-bearing arrangements
Evaluate only where the turbine design actually uses them.
Check first: Do not transfer an auxiliary motor bearing recommendation to a turbine rotor.
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 each support from the turbine drawing and approved specification.
- Obtain the complete thermal, load and rotor-speed envelope.
- Verify the correct support method, lubrication and rotor-dynamic behavior.
- Follow the equipment's approved inspection, assembly and monitored commissioning process.
Symptoms worth checking
Shaft-position or vibration change
Use the turbine's alarm and inspection procedures; a single frequency does not establish cause.
Oil temperature or pressure excursion
Investigate the complete supply/protection system before resuming operation.
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 I use L10 life for a steam-turbine journal bearing?
Not for a fluid-film journal bearing. Its film, temperature, stability and wear assessment use different methods.
Are wind and steam-turbine bearings equivalent?
No. Rotor speed, loads, temperature, support architecture and approval requirements differ substantially.
What is different in a hydropower turbine bearing arrangement?
Identify turbine and generator guide supports separately from thrust support. The horizontal or vertical shaft arrangement, hydraulic loads, rotor weight and the specified oil- or water-lubricated system determine the design; a generic rolling-bearing model does not establish suitability.
Reference basis & recommendation limits
- SKF — Bearing selection process
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.