Pillow block bearing unit · UCP200 series
UCP211 bearing
Ø55 mm shaft, H 63.5 mm
The UCP211 is a two-bolt pillow block unit for a 55 mm shaft: a UC211 insert bearing in a P211 cast-iron housing, with the shaft centre 63.5 mm above the base and bolt holes 171 mm apart. Two-bolt cast-iron pillow block with UC2xx set-screw insert bearing.
- Shaft d
- 55 mm 2.1654 in
- Centre height H
- 63.5 mm 2.5 in
- Bolt spacing J
- 171 mm 6.7323 in
- Overall length L (approx.)
- 219 mm 8.622 in
- Insert / housing
- UC211 / P211
- Load directions
- Radial, moderate axial; tolerates initial misalignment
Designation explained
What UCP211 means
Standard bearing numbers encode the type, the dimension series and the bore. Anything after the base number — seals, clearance, cage — is a suffix.
| Part | Meaning |
|---|---|
UC | Insert bearing with cylindrical bore and set screws (UC2xx) |
P | Two-bolt pillow block housing (P2xx) |
2 | Light series (200) |
11 | 11 → 55 mm shaft diameter (11 × 5) |
Variants
Common UCP211 variants
Suffixes change the bearing without changing its boundary dimensions. The exact letters differ between manufacturers — always order by the full designation from the maker you choose.
| Suffix | Example | Meaning |
|---|---|---|
-8, -12, -16 … | UCP211-16 | Inch shaft size in sixteenths of an inch, e.g. UCP205-16 for a 1″ shaft |
UK / UKP | UKP211+H | Tapered-bore insert for adapter sleeve mounting instead of set screws |
UCFL / UCF / UCT | UCFL211 | Same insert in a two-bolt flange, four-bolt flange or take-up housing |
SS / thermoplastic | SSUCP211 | Stainless steel or plastic housing variants for food and wash-down use |
Same bore
Other 55 mm bore bearings
Every standard bearing in this reference with a 55 mm bore, from light to heavy sections.
| Designation | Type | D | B / H |
|---|---|---|---|
| 6011 | Deep groove ball bearing | 90 mm | 18 mm |
| 6211 | Deep groove ball bearing | 100 mm | 21 mm |
| 6311 | Deep groove ball bearing | 120 mm | 29 mm |
| 6411 | Deep groove ball bearing | 140 mm | 33 mm |
| 61811 | Deep groove ball bearing | 72 mm | 9 mm |
| 61911 | Deep groove ball bearing | 80 mm | 13 mm |
| 16011 | Deep groove ball bearing | 90 mm | 11 mm |
| 1211 | Self-aligning ball bearing | 100 mm | 21 mm |
| 1311 | Self-aligning ball bearing | 120 mm | 29 mm |
| 2211 | Self-aligning ball bearing | 100 mm | 25 mm |
| 2311 | Self-aligning ball bearing | 120 mm | 43 mm |
| 7211 | Angular contact ball bearing | 100 mm | 21 mm |
| 7311 | Angular contact ball bearing | 120 mm | 29 mm |
| NU211 | Cylindrical roller bearing | 100 mm | 21 mm |
| NU311 | Cylindrical roller bearing | 120 mm | 29 mm |
| NU2211 | Cylindrical roller bearing | 100 mm | 25 mm |
| NU2311 | Cylindrical roller bearing | 120 mm | 43 mm |
| 22211 | Spherical roller bearing | 100 mm | 25 mm |
| 22311 | Spherical roller bearing | 120 mm | 43 mm |
| 30211 | Tapered roller bearing | 100 mm | 22.75 mm |
| 30311 | Tapered roller bearing | 120 mm | 31.5 mm |
| 32011X | Tapered roller bearing | 90 mm | 23 mm |
| 32211 | Tapered roller bearing | 100 mm | 26.75 mm |
| 32311 | Tapered roller bearing | 120 mm | 45.5 mm |
| 51111 | Thrust ball bearing | 78 mm | 16 mm |
| 51211 | Thrust ball bearing | 90 mm | 25 mm |
| 51311 | Thrust ball bearing | 105 mm | 35 mm |
Where to buy
Find UCP211 at sellers
Search results on independent sellers. We are not affiliated with them, do not earn from these links and do not see their prices or stock. Results mix brands and variants — check the full designation before you order.
About these dimensions. Boundary dimensions follow JIS B 1559 / ISO 3228 for the shaft centre height and bolt spacing of P2xx housings, dimension series P2, and are the same for every manufacturer of a standard UCP211. Chamfers, load ratings, speed limits and weight depend on the manufacturer and design and are not shown — use the maker's datasheet for engineering decisions. Last checked 9 October 2026. Spotted an error? Tell us.
Learn more
What size shaft fits a UCP211?
A UCP211 takes a 55 mm shaft. Inch versions carry a suffix in sixteenths of an inch — for example UCP211-16 for a 1″ shaft where that size exists.
What is the centre height of a UCP211?
The shaft centre sits 63.5 mm above the mounting base, with bolt holes 171 mm apart and an overall length of about 219 mm. Overall height and foot details vary slightly between manufacturers.
Can I replace only the bearing in a UCP211?
Yes — the insert is a UC211 and the housing a P211. Inserts from different makers with the same designation fit the standard housing.
Where are the load ratings?
They depend on the insert manufacturer and are not listed here. Check the datasheet for the exact unit you intend to use.
Need UCP211 data for a whole catalog?
We can help with that.
Normalized specifications, variants and supplier listings for every bearing you sell, with the source behind each value.