UCFCX00 Series Medium Duty Flange Cartridge Bearing Units
UCFCX00 is the step up to consider when the machine needs the familiar four-bolt round cartridge format but the standard UCFC200 family is not the intended duty series. The catalogue identifies UCFCX as medium duty, with published sizes from 25 mm through 85 mm and unit weights up to 12.90 kg.
That extra duty classification should not be reduced to a model suffix during cross-reference work. Housing envelope, pilot diameter, bolt pattern, insert size and available space all need to be checked because a medium-duty unit can occupy a different physical package even when the shaft diameter looks familiar.
For a wider housing comparison, browse the bearings range before finalising the mounting style.
How to spot an X-series replacement requirement
Use the product drawing as the final dimensional authority. The points below are practical filters that help narrow the correct model before a full drawing comparison.
Do not down-select to a lighter family only because the bore happens to match.
Check D2, P, J, A2 and housing thickness; larger-duty housings can affect guards and surrounding structure.
Setscrew location, insert width and shaft condition still matter even when the housing is the main reason for choosing the series.
The supporting plate or frame should match the intended bolt pattern and seating area of the specified housing.
Medium duty without changing the cartridge concept
Medium-duty catalogue family
The X-series designation separates this range from standard-duty UCFC200.
25-85 mm published shaft range
The series starts at 25 mm and extends through 85 mm in the source catalogue.
Setscrew locking
Shaft retention remains familiar for users already working with UC-style inserts.
Higher published unit mass
Catalogue weights run from about 1.20 to 12.90 kg, reflecting the larger hardware across the series.
UCFCX00 published technical range
The table below keeps the catalogue values used for this series. Use the model-specific drawing for the final interchange decision; dimensions and suffixes can vary inside a family.
| Specification point | UCFCX00 catalogue data |
|---|---|
| Series / model family | UCFCX05 to UCFCX17 |
| Duty class | Medium duty |
| Locking / bearing mounting | Setscrew locking |
| Published shaft range | 25-85 mm |
| Published metric / inch options | 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85 mm |
| Housing / mounting style | 4-bolt round flange cartridge housing |
| Housing construction | Cast iron |
| Catalog dimensional fields | D2, P, J, A2, N, L, H1, A1, D1, B, S, Z, bolt size and weight |
| Published unit weight | 1.20-12.90 kg |
Mounting a heavier cartridge unit correctly
Larger sizes are substantially heavier than small standard-duty cartridges; plan safe handling before the last bolt is removed.
Distorted mounting plates can prevent a heavier cartridge from seating correctly.
Do not use the bolts to pull the housing against warped steelwork.
A generic “FC bearing” description can lead to accidental substitution with the standard series.
Typical reasons to move beyond standard UCFC
These are application patterns where the housing concept is commonly considered. Final suitability still depends on load, speed, alignment, environment and the machine designer’s requirements.
Material-handling equipment
Medium-duty cartridge units can suit shaft stations where a face mount is needed but the machine is built more heavily than a light conveyor.
Process machinery side plates
The round flange is convenient for large fabricated end plates and enclosed drive sections.
Agricultural and industrial drives
The broad 25-85 mm range covers many medium-size shaft supports where cast housing robustness is preferred.
OEM upgrades within an FC layout
A designer can retain the cartridge mounting concept while specifying the X-series package from the start.
UCFCX00 versus standard and inch-based families
UCFCX00 retains setscrew locking and round four-bolt mounting but belongs to the medium-duty family. UCFC200 is the standard-duty reference point. UCFCSX00 is the related option when inch-based housing geometry and bore variants are part of the requirement.
Send the machine details for a model check
For UCFCX00, send the existing model marking, shaft diameter, mounting dimensions and a photo of the bearing position. GBC can review the information against the published series before quotation. Email: sales@australia-drive.com.
