UCP211 Bearing Dimensions
UCP211 pillow block bearing unit: 55 mm bore, 171 mm bolt centres, 63.5 mm centre height (FULI catalog). P211 housing + UC211 insert, size-equivalent codes.
UCP211 specifications
| Shaft diameter d | 55 mm |
|---|---|
| Centre height H | 63.5 mm |
| Base length L | 219 mm |
| Bolt hole spacing J | 171 mm |
| Overall height H0 | 126 mm |
| Insert width B | 55.6 mm |
| Mounting bolt | M16 |
| 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 |
Dimensions from FULI's catalog.
Load ratings & speed
| Dynamic load rating Cr | 43.5 kN |
|---|---|
| Static load rating C0r | 29.3 kN |
| Limiting speed, shaft js7 / j7 | 2,700 rpm |
| Limiting speed, shaft h7 | 2,000 rpm |
| Weight | 3.3 kg — approx. |
Values from FULI's catalog; confirm for your application.
How to read the UCP211 designation
| Segment | Meaning |
|---|---|
| UC | Insert bearing with set-screw locking and spherical outside diameter |
| P | Pillow block (plummer block) housing |
| 2 | 200 series (light duty) |
| 11 | Bore code 11 → 55 mm bore. ISO bore code (00–03 = 10/12/15/17 mm; 04 and above = code × 5 mm). |
UCP211 interchange by brand
UCP211 is a housed unit: a UC211 insert bearing in a P211 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 | Designation |
|---|---|
| SKF | UCP 211 |
| Timken | UCP211 |
| NTN | UCP211D1 |
| Koyo | UCP211 |
Same size code; NTN adds D1 after the number. Confirm housing bolt spacing.
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.
UCP211 compared with nearby sizes and housings
UCP211 is a pillow block unit that holds the UC211 insert on a 55 mm shaft: centre height H 63.5 mm, base length L 219 mm and overall height H0 126 mm with M16 bolts.
The same 211 size is also made as UCF211 (square flange unit, d 55 · L 162 · J 130 mm). All of them take the same UC211 insert, so a worn insert can be changed without changing the housing type.
UCP212 is the next larger size in the same series on this site: shaft d 60 mm (5 mm more), inner ring width B 65.1 mm (9.5 mm more), centre height H 69.8 mm (6.3 mm more), length L 241 mm (22 mm more), bolt spacing J 184 mm (13 mm more) and overall height H0 138 mm (12 mm more).
UCP210 is the next smaller size in the same series on this site: shaft d 50 mm (5 mm less), inner ring width B 51.6 mm (4 mm less), centre height H 57.2 mm (6.3 mm less), length L 206 mm (13 mm less), bolt spacing J 159 mm (12 mm less) and overall height H0 114 mm (12 mm less).
| Model | Type | Main dimensions | Weight (kg) |
|---|---|---|---|
| UCP211 | pillow block unit (this page) | d 55 · H 63.5 · J 171 mm | 3.3 |
| UCP210 | pillow block unit | d 50 · H 57.2 · J 159 mm | 2.6 |
| UCP212 | pillow block unit | d 60 · H 69.8 · J 184 mm | 4.6 |
| UC211 | insert bearing | 55 × 100 × 55.6 mm (d × D × B) | 1.12 |
| UCF211 | square flange unit | d 55 · L 162 · J 130 mm | — |
Dimensions in mm from the model pages; weight from FULI's catalog, — = not listed on this site.
UCP211 weight, load ratings and speed
FULI's catalog gives about 3.3 kg for the complete unit, housing and insert together, so 100 pieces of UCP211 weigh about 330 kg before packing.
The catalog lists UCP211 with a dynamic load rating of 43.5 kN and a static load rating of 29.3 kN. Its speed limits depend on the shaft tolerance: 2,700 rpm on a js7 or j7 shaft and 2,000 rpm on an h7 shaft. A closer shaft fit holds the inner ring more evenly, which is why the js7 / j7 figure is higher.
Values from FULI's catalog; confirm for your application.
UCP211 dimensions in inches
The nearest common inch shaft size to the 55 mm bore of UCP211 is 2-3/16 in (55.56 mm), 0.56 mm larger than the bore, so UCP211 will not go 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 | 55 mm | 2.1654 in |
| Centre height H | 63.5 mm | 2.5000 in |
| Base length L | 219 mm | 8.6220 in |
| Bolt hole spacing J | 171 mm | 6.7323 in |
| Overall height H0 | 126 mm | 4.9606 in |
| Insert width B | 55.6 mm | 2.1890 in |
Converted at 1 in = 25.4 mm and rounded to four decimals. The bearing itself is made to the millimetre sizes.
Mounting UCP211 (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. For UCP211 the catalog gives 2,700 and 2,000 rpm for the two cases.
The UC211 insert in UCP211 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 UCP211 down with M16 bolts at 171 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 UCP211
The insert in UCP211 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 UCP211
FULI supplies UCP211 as a complete unit, or the UC211 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 UCP211.
Tools and guides for UCP211
Typical applications
- Conveyors
- Fans and blowers
- Agricultural machinery
- Grain and food processing lines
FAQ
What shaft size does UCP211 fit?
A 55 mm shaft (2.1654 in).
What is the difference between UCP211 and UCP212?
UCP212 is the next size up, for a 60 mm shaft, with inner ring width B 65.1 mm (9.5 mm more), centre height H 69.8 mm (6.3 mm more), length L 241 mm (22 mm more), bolt spacing J 184 mm (13 mm more) and overall height H0 138 mm (12 mm more). Choose UCP212 when the shaft is larger or the load is higher; the housings are not interchangeable.
Which insert fits UCP211?
The UC211 insert (55 × 100 × 55.6 mm). It is sold on its own for replacement.
UCP211 or UCF211: which should I use?
Both hold the same UC211 insert on a 55 mm shaft. UCP211 is a pillow block unit (d 55 · H 63.5 · J 171 mm); UCF211 is a square flange unit (d 55 · L 162 · J 130 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.
How much does UCP211 weigh?
About 3.3 kg in FULI's catalog; 100 pieces weigh about 330 kg before packing.
Does UCP211 come as a complete unit or insert only?
UCP211 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.