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
Disc harrows and ploughs
Measure round, square or hexagonal shaft geometry, flanges and sealing. A 25 mm round-bore insert does not replace a similarly sized square-bore agricultural bearing.
Balers and augers
Include crop wrapping, belt or chain forces, intermittent overload and dirt ingress. Check the housing and locking system.
Mower and cutting spindles
Identify the bearing pair, spacers, shaft retention and blade loading. Do not infer the replacement from mower brand alone.
Which bearing structures make sense?
Sealed agricultural units
Investigate purpose-designed sealing and mounting for field contamination.
Check first: Generic shields do not establish adequate soil/water exclusion.
Mounted ball or roller supports
Useful for specified roller and auger positions after load and mounting checks.
Check first: A unit must match shaft locking, housing height, bolt pattern and required grease.
Spindle bearing pairs
Review for cutting shafts and rotating equipment.
Check first: Retain spacers and axial settings; belt and blade reactions both matter.
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.
UC205
25×52×34.1 mmInsert bearing · 25 mm shaft
Consider the insert architecture only where a compatible spherical seating and locking arrangement are specified.
- Dynamic C
- 14.9 kN
- Static C₀
- 7.8 kN
- Limiting speed
- — rpm
Before selectionGeneral roller/auger mounting references only. Not a harrow, tractor or mower fitment list. Verify the housing, shaft tolerance, retention and exact seal/grease specification.
Open complete model dataUCP205
25 mm shaft · complete unitPillow-block unit · 25 mm shaft
A mounted-support reference for checking shaft height, mounting footprint and insert capacity as an assembly.
- Dynamic C
- 14 kN
- Static C₀
- 7.85 kN
- Limiting speed
- — rpm
Before selectionGeneral roller/auger mounting references only. Not a harrow, tractor or mower fitment list. Verify the housing rating, bolt pattern, locking method and permitted axial loading.
Open complete model dataUCF205
25 mm shaft · complete unitFlanged unit · 25 mm shaft
A flange-mounted alternative architecture where the machine uses a compatible mounting face.
- Dynamic C
- 14 kN
- Static C₀
- 7.85 kN
- Limiting speed
- — rpm
Before selectionGeneral roller/auger mounting references only. Not a harrow, tractor or mower fitment list. Check flange dimensions, bolt pattern, mounting rigidity, locking and sealing.
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 | FAGUC205 | KOYOUCP205 | KOYOUCF205 |
|---|---|---|---|
| Bore d (mm) | 25 | 25 | 25 |
| Outside D (mm) | 52 | — | — |
| Recorded width (mm) | 34.1 | — | — |
| Dynamic C (kN) | 14.9 | 14 | 14 |
| Static C₀ (kN) | 7.8 | 7.85 | 7.85 |
| Catalogue limiting speed (rpm) | — | — | — |
— = 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 exact shaft position and record every marking and mounting dimension.
- Separate field contamination, impact and belt/chain reactions from steady running load.
- Check bearing and housing ratings, shaft locking, seals and the specified grease.
- Restore guards and use the equipment's alignment and commissioning procedure.
Symptoms worth checking
Loose insert or fretted shaft
Inspect shaft wear and the specified locking arrangement.
Dirt-filled grease or repeated seizure
Check sealing, purge practice and crop wrapping before replacing the same design.
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 standard UC205 replace a disc-harrow bearing?
Not by bore size alone. Harrow bearings may have square/hex bores, special flanges and specialized seals. The general UC205 reference is not a harrow approval.
Are the listed units compatible with a named mower or baler?
No equipment fitment is claimed. Confirm the complete part number, dimensions, arrangement and service specification.
Can field-roller wooden bearing blocks be replaced by ball bearings?
Not by matching bore alone. A wooden or other plain block has different housing, lubrication, contamination and alignment requirements. Converting a cultipacker or land roller needs an engineered support arrangement; the listed ball-bearing units are not direct replacements.
Reference basis & recommendation limits
- NSK — Agriculture
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.