UCP209 Bearing Dimensions
UCP209 pillow block bearing unit: 45 mm bore, 146 mm bolt centres, 54 mm centre height (FULI catalog). P209 housing + UC209 insert, size-equivalent codes.
UCP209 specifications
| Shaft diameter d | 45 mm |
|---|---|
| Centre height H | 54 mm |
| Base length L | 190 mm |
| Bolt hole spacing J | 146 mm |
| Overall height H0 | 106 mm |
| Insert width B | 49.2 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 |
Dimensions from FULI's catalog.
Load ratings & speed
| Dynamic load rating Cr | 31.5 kN |
|---|---|
| Static load rating C0r | 20.4 kN |
| Limiting speed, shaft js7 / j7 | 3,300 rpm |
| Limiting speed, shaft h7 | 2,400 rpm |
| Weight | 2.2 kg — approx. |
Values from FULI's catalog; confirm for your application.
How to read the UCP209 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) |
| 09 | Bore code 09 → 45 mm bore. ISO bore code (00–03 = 10/12/15/17 mm; 04 and above = code × 5 mm). |
UCP209 interchange by brand
UCP209 is a housed unit: a UC209 insert bearing in a P209 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 209 |
| Timken | UCP209 |
| NTN | UCP209D1 |
| Koyo | UCP209 |
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.
UCP209 compared with nearby sizes and housings
UCP209 is a pillow block unit that holds the UC209 insert on a 45 mm shaft: centre height H 54 mm, base length L 190 mm and overall height H0 106 mm with M14 bolts.
The same 209 size is also made as UCF209 (square flange unit, d 45 · L 137 · J 105 mm). All of them take the same UC209 insert, so a worn insert can be changed without changing the housing type.
UCP210 is the next larger size in the same series on this site: shaft d 50 mm (5 mm more), inner ring width B 51.6 mm (2.4 mm more), centre height H 57.2 mm (3.2 mm more), length L 206 mm (16 mm more), bolt spacing J 159 mm (13 mm more) and overall height H0 114 mm (8 mm more), and it takes M16 bolts instead of M14.
UCP208 is the next smaller size in the same series on this site: shaft d 40 mm (5 mm less), inner ring width B 49.2 mm (the same), centre height H 49.2 mm (4.8 mm less), length L 184 mm (6 mm less), bolt spacing J 137 mm (9 mm less) and overall height H0 100 mm (6 mm less).
| Model | Type | Main dimensions | Weight (kg) |
|---|---|---|---|
| UCP209 | pillow block unit (this page) | d 45 · H 54 · J 146 mm | 2.2 |
| UCP208 | pillow block unit | d 40 · H 49.2 · J 137 mm | 1.9 |
| UCP210 | pillow block unit | d 50 · H 57.2 · J 159 mm | 2.6 |
| UC209 | insert bearing | 45 × 85 × 49.2 mm (d × D × B) | 0.68 |
| SA209 | insert bearing | 45 × 85 × 30.2 mm (d × D × B) | — |
| UCF209 | square flange unit | d 45 · L 137 · J 105 mm | — |
Dimensions in mm from the model pages; weight from FULI's catalog, — = not listed on this site.
UCP209 weight, load ratings and speed
FULI's catalog gives about 2.2 kg for the complete unit, housing and insert together, so 100 pieces of UCP209 weigh about 220 kg before packing.
The catalog lists UCP209 with a dynamic load rating of 31.5 kN and a static load rating of 20.4 kN. Its speed limits depend on the shaft tolerance: 3,300 rpm on a js7 or j7 shaft and 2,400 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.
UCP209 dimensions in inches
The nearest common inch shaft size to the 45 mm bore of UCP209 is 1-3/4 in (44.45 mm), 0.55 mm smaller than the bore, so UCP209 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 | 45 mm | 1.7717 in |
| Centre height H | 54 mm | 2.1260 in |
| Base length L | 190 mm | 7.4803 in |
| Bolt hole spacing J | 146 mm | 5.7480 in |
| Overall height H0 | 106 mm | 4.1732 in |
| Insert width B | 49.2 mm | 1.9370 in |
Converted at 1 in = 25.4 mm and rounded to four decimals. The bearing itself is made to the millimetre sizes.
Mounting UCP209 (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 UCP209 the catalog gives 3,300 and 2,400 rpm for the two cases.
The UC209 insert in UCP209 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 UCP209 down with M14 bolts at 146 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 UCP209
The insert in UCP209 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 UCP209
FULI supplies UCP209 as a complete unit, or the UC209 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 UCP209.
Tools and guides for UCP209
Typical applications
- Conveyors
- Fans and blowers
- Agricultural machinery
- Grain and food processing lines
FAQ
What shaft size does UCP209 fit?
A 45 mm shaft (1.7717 in).
What is the difference between UCP209 and UCP210?
UCP210 is the next size up, for a 50 mm shaft, with inner ring width B 51.6 mm (2.4 mm more), centre height H 57.2 mm (3.2 mm more), length L 206 mm (16 mm more), bolt spacing J 159 mm (13 mm more) and overall height H0 114 mm (8 mm more). It takes M16 bolts. Choose UCP210 when the shaft is larger or the load is higher; the housings are not interchangeable.
Which insert fits UCP209?
The UC209 insert (45 × 85 × 49.2 mm). It is sold on its own for replacement.
UCP209 or UCF209: which should I use?
Both hold the same UC209 insert on a 45 mm shaft. UCP209 is a pillow block unit (d 45 · H 54 · J 146 mm); UCF209 is a square flange unit (d 45 · L 137 · J 105 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 UCP209 weigh?
About 2.2 kg in FULI's catalog; 100 pieces weigh about 220 kg before packing.
Does UCP209 come as a complete unit or insert only?
UCP209 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.