UCF210 Bearing Dimensions
UCF210 4-bolt square flange bearing unit: 50 mm bore, 111 mm bolt centres. F210 housing + UC210 insert, designation, size-equivalent codes.
UCF210 specifications
| Shaft diameter d | 50 mm |
|---|---|
| Flange length L | 143 mm |
| Bolt hole spacing J | 111 mm |
| Insert width B | 51.6 mm |
| Mounting bolt | M14 |
| Seal / shield options | Sealed insert bearing (UC type) with cast iron housing |
| Material | Insert: GCr15 chrome bearing steel (rings and rolling elements); housing: cast iron |
| Precision | P0 (standard) |
| Radial clearance | C0 (standard); C3 on request |
| Load ratings | Load ratings for this model are being checked against FULI's catalog. Ask for them with the quote. |
Dimensions cross-checked against published catalogues; please confirm with your quote.
How to read the UCF210 designation
| Segment | Meaning |
|---|---|
| UC | Insert bearing with set-screw locking and spherical outside diameter |
| F | Four-bolt square flange housing |
| 2 | 200 series (light duty) |
| 10 | Bore code 10 → 50 mm bore. ISO bore code (00–03 = 10/12/15/17 mm; 04 and above = code × 5 mm). |
UCF210 interchange
UCF210 is a housed unit: a UC210 insert bearing in an F210 housing. The insert bearing dimensions follow ISO and interchange between manufacturers. Housing dimensions such as bolt hole spacing can differ between the JIS and ISO versions of the same designation, so please confirm the mounting dimensions with us before ordering.
Brand numbers for UCP, UCF and UCFL units: Pillow Block Bearing Cross Reference.
Brand names are trademarks of their respective owners. FULI is not affiliated with, authorized by or endorsed by these companies. Part numbers are shown for interchange reference only. FULI dimensions, load ratings and speeds come from the FULI catalog.
UCF210 compared with nearby sizes and housings
UCF210 is a square flange unit that holds the UC210 insert on a 50 mm shaft: flange length L 143 mm with M14 bolts.
The same 210 size is also made as UCP210 (pillow block unit, d 50 · H 57.2 · J 159 mm). All of them take the same UC210 insert, so a worn insert can be changed without changing the housing type.
UCF211 is the next larger size in the same series on this site: shaft d 55 mm (5 mm more), inner ring width B 55.6 mm (4 mm more), length L 162 mm (19 mm more) and bolt spacing J 130 mm (19 mm more), and it takes M16 bolts instead of M14.
UCF209 is the next smaller size in the same series on this site: shaft d 45 mm (5 mm less), inner ring width B 49.2 mm (2.4 mm less), length L 137 mm (6 mm less) and bolt spacing J 105 mm (6 mm less).
| Model | Type | Main dimensions | Weight (kg) |
|---|---|---|---|
| UCF210 | square flange unit (this page) | d 50 · L 143 · J 111 mm | — |
| UCF209 | square flange unit | d 45 · L 137 · J 105 mm | — |
| UCF211 | square flange unit | d 55 · L 162 · J 130 mm | — |
| UC210 | insert bearing | 50 × 90 × 51.6 mm (d × D × B) | 0.80 |
| SA210 | insert bearing | 50 × 90 × 30.2 mm (d × D × B) | — |
| UCP210 | pillow block unit | d 50 · H 57.2 · J 159 mm | 2.6 |
Dimensions in mm from the model pages; weight from FULI's catalog, — = not listed on this site.
UCF210 load ratings
FULI's catalog has no load rating line for UCF210 itself, so none is given here. The ratings of the UC210 insert are on its own page. Ask us and we send the figures with the quotation.
UCF210 dimensions in inches
The nearest common inch shaft size to the 50 mm bore of UCF210 is 1-15/16 in (49.21 mm), 0.79 mm smaller than the bore, so UCF210 would be loose on it. An inch shaft needs an inch bore insert. Inch bore versions are made for some sizes; ask us with the shaft size.
| Dimension | Millimetres | Inches |
|---|---|---|
| Shaft diameter d | 50 mm | 1.9685 in |
| Flange length L | 143 mm | 5.6299 in |
| Bolt hole spacing J | 111 mm | 4.3701 in |
| Insert width B | 51.6 mm | 2.0315 in |
Converted at 1 in = 25.4 mm and rounded to four decimals. The bearing itself is made to the millimetre sizes.
Mounting UCF210 (general guidance)
General guidance, not a FULI specification: insert bearings slide onto the shaft rather than being pressed on, and are held by their locking device. A shaft ground or drawn to h7 is common; a closer shaft such as js7 or j7 suits higher speed.
The UC210 insert in UCF210 is locked by set screws in the extended inner ring. Housed-unit problems usually start at the set screws: if the inner ring is not held, it turns on the shaft and wears it. Tighten each screw to the torque in the mounting instructions, and check them again after the first hours of running.
Bolt UCF210 down with M14 bolts at 111 mm spacing on a flat, rigid face. Line up the two housings on a shaft before tightening the bolts fully, then lock the inserts, so the shaft is not bent between them.
Grease for UCF210
The insert in UCF210 is sealed on both sides and greased at the factory. If the housing has a grease fitting, add grease slowly through it while the shaft turns until a little fresh grease shows at the seals; general practice is to relubricate more often in wet or dusty places.
Greases for a stated temperature range can be specified on the order; for North America a range of −40 to 120 °C is often asked for.
How FULI supplies UCF210
FULI supplies UCF210 as a complete unit, or the UC210 insert on its own for replacement. Before packing, the factory checks the mounting torque, the fit of the insert in the housing, the radial clearance and that the base-to-centre height is consistent across the batch.
Rings are marked with a brand you are authorised to use, with the FULI brand, or left neutral, as your order states. The box is printed with the model, precision class and brand.
Inquiries that leave out the prefix or suffix letters are the usual cause of a wrong quote, so write the full designation, for example UCF210.
Tools and guides for UCF210
Typical applications
- Conveyors
- Packaging machinery
- Agricultural machinery
- Textile machinery
FAQ
What shaft size does UCF210 fit?
A 50 mm shaft (1.9685 in).
What is the difference between UCF210 and UCF211?
UCF211 is the next size up, for a 55 mm shaft, with inner ring width B 55.6 mm (4 mm more), length L 162 mm (19 mm more) and bolt spacing J 130 mm (19 mm more). It takes M16 bolts. Choose UCF211 when the shaft is larger or the load is higher; the housings are not interchangeable.
Which insert fits UCF210?
The UC210 insert (50 × 90 × 51.6 mm). It is sold on its own for replacement.
UCF210 or UCP210: which should I use?
Both hold the same UC210 insert on a 50 mm shaft. UCF210 is a square flange unit (d 50 · L 143 · J 111 mm); UCP210 is a pillow block unit (d 50 · H 57.2 · J 159 mm). Choose by how the bearing is fixed to the machine: a pillow block bolts to a surface parallel to the shaft, a flange to a face across it.
Does UCF210 come as a complete unit or insert only?
UCF210 is normally supplied as a complete unit (insert bearing already fitted in the housing). The insert can also be quoted separately if you are replacing only the bearing.
Where are the load ratings for UCF210?
Load ratings for UCF210 are being checked against FULI's catalog and are not shown on this page yet. Model pages with a "Load ratings & speed" table carry values from FULI's catalog.