Pillow Block Bearing Cross Reference: UCP, UCF and UCFL Units

FULI UCP, UCF and UCFL units use UC 200 series set-screw inserts. SKF, Timken, NTN and Koyo sell units under the same JIS-style numbers. This page lists those numbers next to the FULI unit, gives Dodge, SealMaster, Browning and Fafnir numbers for inch-shaft units, and lists what to check before you replace a unit.

How mounted unit numbers work

Insert + housing

UC205 is the insert bearing: 25 mm bore, locked to the shaft with set screws. The letters after UC name the housing: P is a pillow block, F is a 4-bolt square flange and FL is a 2-bolt oval flange. UCP205 is a P205 housing with a UC205 insert.

What must match

Shaft diameter, center height from the base (H), bolt hole spacing (J), bolt size and the locking type (set screw, eccentric collar or concentric collar).

Maker suffixes

NTN and NSK add D1 after the UC number (UCP205D1); NSK full part numbers carry further suffixes (UCP205D1-X-AS3S). SKF writes a space (UCP 205). Timken and Koyo write UCP205. For NSK, NTN, Koyo and NACHI ball bearing suffixes, see the NSK, NTN, Koyo and NACHI cross reference.

Metric cross reference: UCP, UCF and UCFL

Download this chart as a PDF with the UCF, UCFL and inch-shaft tables, the checks before you order and our contact details.

UCP pillow block units

Dimensions from FULI's catalog.

UCF 4-bolt square flange units

Dimensions from FULI's catalog. Rows marked (JIS): Dimensions per JIS B 1557 standard sizes; FULI's factory drawing to follow.

UCFL 2-bolt oval flange units

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.

SKF numbers are from SKF product pages, Timken numbers from the Timken U Series catalog, NTN numbers from NTN Americas and Koyo numbers from the Koyo unit catalog. “ask us” means we have not confirmed that number or dimension yet; send it to us and we will check it. Sizes 204 and 210 are not in these tables; send us the number, or see the FULI UCP204 page. FULI unit size tables: UCP 200 series and UCF and UCFL 200 series.

Inch-shaft units: Dodge, SealMaster, Browning and Fafnir

Dodge, SealMaster and Browning mainly use their own numbers for inch-bore units. Their published interchange charts compare them with inch-bore UC units such as UCP205-16. Dodge’s chart says: “The Dodge units listed below match critical dimensions; some slight differences may exist.” Each FULI inch bore unit uses the same housing as the metric unit of the same size; only the bore is different. Sizes and bores: inch bore pillow block bearings.

Dodge and SealMaster numbers are from the Dodge interchange chart, Browning numbers from the Browning mounted bearing catalog and Fafnir numbers from the Timken Fafnir interchange updates. The Fafnir column lists set-screw units only (YAS, YAK, YCJ). “ask us” means we have not confirmed that number; send it with the shaft size and we will check it.

Check before you order

1. Center height: some units are low base, for example Dodge P2B-SCB-108, Browning VPLS-224 and Fafnir YAK 1 1/2.
2. Bolt spacing: 2-bolt flanges differ between makers. Browning marks the JIS UCFL205-16 to VF2S-216 match as not fully interchangeable on bolt spacing.
3. Locking type: Fafnir RAS, RAK and RCJ units and SealMaster Skwezloc units (for example NP-24T) do not use set screws. FULI UC units use set screws.
4. Housing size: some makers use a smaller housing for the same shaft, for example Dodge SCU and SealMaster NP-20R for 1-1/4 in.

For Timken and Fafnir ball bearings and U Series units, see the Timken to FULI cross reference.

Send your mounted unit list

List the unit numbers, shaft sizes and quantities. We reply with the FULI unit for each line, price and lead time. Email sales@fuli-bearings.com or use the contact form.

All brands and suffixes: Bearing cross reference.

SKF, Timken, Fafnir, NTN, NSK, Koyo, NACHI, Dodge, SealMaster, Browning and Skwezloc are trademarks of their respective owners. FULI is not affiliated with, authorized by or endorsed by any of these companies. Part numbers are shown for interchange reference only. FULI dimensions come from the FULI catalog.

Sources

1. https://www.skf.com/us/products/mounted-bearings/ball-bearing-units/pillow-block-ball-bearing-units/productid-UCP%20205
2. https://www.skf.com/us/products/mounted-bearings/ball-bearing-units/flanged-ball-bearing-units/productid-UCF%20205
3. https://www.skf.com/us/products/mounted-bearings/ball-bearing-units/flanged-ball-bearing-units/productid-UCFL%20205
4. https://www.timken.com/wp-content/uploads/2018/08/E11112-GB.pdf
5. https://bearingfinder.ntnamericas.com/item/pillow-block-unit-with-set-screw/ow-block-unit-cast-housing-set-screw-ucp-ucpx-type/ucp205d1
6. https://www.oss.nsk.com/products/bearing-units/pillow-block-bearing-units/ucp205d1-x-as3s.html
7. https://koyo.jtekt.co.jp/en/support/catalog-download/uploads/catbs006en.pdf
8. https://assets.dodgeindustrial.com/m/60bc5d48cf2b7142/original/Bearing-Dimensional-Interchange-Chart.pdf
9. https://www.ahrinternational.com/PDF_catalogues/browning/BMB3.pdf
10. https://www.timken.com/wp-content/uploads/2024/07/0A21-FFNRNTRCHNGP-Fafnir-Interchange-Updates-10861_V2.pdf