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
Roll position
Identify work roll, backup roll, guide roll or auxiliary support and its complete arrangement.
Load and alignment
Include separating force, shock, axial location, deflection and chock stiffness.
Heat and contamination
Review cooling water, scale, lubricant supply, sealing and actual bearing temperatures.
Which bearing structures make sense?
Multi-row roll-neck arrangements
Use the mill-specific bearing/chock specification.
Check first: Bore and load rating alone do not establish row arrangement or roll compatibility.
Auxiliary spherical-roller supports
Investigate only for a separately calculated process-roll support.
Check first: Check axial location, hot clearance and seals.
Recommended starting points
These candidates illustrate specific roles and envelopes, not a ranked list or interchangeable set. Review each condition before using a model in a design.
23048-BE-XL
240×360×92 mmLarge spherical-roller reference · 240 mm bore
A real large-envelope record for comparing radial-heavy support architecture and published ratings.
- Dynamic C
- 1350 kN
- Static C₀
- 2120 kN
- Limiting speed
- 2080 rpm
Before selectionAuxiliary spherical-roller envelope reference only; not a multi-row roll-neck or Z-mill replacement. Validate the complete shaft, housing, load and lubrication design; size alone is not machine fit.
Open complete model dataCompare the recorded specifications
Different sizes and bearing structures are shown for different duties. C and C₀ are catalogue load ratings, not permissible equipment loads. Limiting speed is not an approved operating speed.
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| Parameter | FAG23048-BE-XL |
|---|---|
| Bore d (mm) | 240 |
| Outside D (mm) | 360 |
| Recorded width (mm) | 92 |
| Dynamic C (kN) | 1350 |
| Static C₀ (kN) | 2120 |
| Catalogue limiting speed (rpm) | 2080 |
— = not reported, or not directly comparable for a mounted unit. Width conventions differ for inserts, complete units and bearing assemblies; inspect the dimensional drawing. Values are read from the current BearingScope records, not estimated from model numbers.
Work through the selection
- Identify the roll position and exact bearing/chock assembly.
- Obtain roll-force, shock, temperature and axial-load cases.
- Verify the full arrangement, fits, chock support and lubricant/seal system.
- Follow the mill's installation, inspection and monitoring procedure.
Symptoms worth checking
Water-contaminated oil
Inspect cooling-water barriers, drainage and seals.
Uneven race loading
Review chock alignment, shaft deflection and support stiffness.
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 a spherical bearing replace a multi-row cylindrical roll-neck bearing?
Not as a catalogue substitution. The architectures, locating functions and structural interfaces differ.
Does a mill bearing always need greater clearance?
No universal grade applies. The specified fits and operating temperatures determine the required clearance.
Are paper-roll and steel rolling-mill bearings selected in the same way?
Both need defined loads and support geometry, but their operating duties differ. For paper rolls, establish the wet or dry section, moisture exposure, cylinder temperature, lubrication and axial thermal movement. Do not transfer a steel-mill roll-neck arrangement to a paper machine by bore size.
Reference basis & recommendation limits
- NSK — Steel & Metals
- NSK — E1266 Bearings for Papermaking Machines (catalogue listing)
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.