Bearing Housing Dimensions
Pick a UC insert or a housing number to see every matching combination, housing dimensions and bolt size. For replacing inserts or buying housings alone.
Match an insert bearing to its housing, or a housing to the insert it takes, using the bore size common to both.
Insert ↔ housing size matrix (20 to 40 mm bore)
| Bore | Insert | UCP width / bolt | UCF width / bolt | UCFL width / bolt |
|---|---|---|---|---|
| 20 mm | UC204, OD 47 mm | 31 mm, M10 | 31 mm, M10 | 31 mm, M10 |
| 25 mm | UC205, OD 52 mm | 34.1 mm, M10 | 34.1 mm, M10 | 34.1 mm, M14 |
| 30 mm | UC206, OD 62 mm | 38.1 mm, M14 | 38.1 mm, M10 | 38.1 mm, M14 |
| 35 mm | UC207, OD 72 mm | 42.9 mm, M14 | 42.9 mm, M12 | 42.9 mm, M14 |
| 40 mm | UC208, OD 80 mm | 49.2 mm, M14 | 49.2 mm, M14 | 49.2 mm, M14 |
Width in this table is the insert’s outer ring width, which the housing bore is machined to match. Full housing length, height and bolt spacing are on each housing’s own page: pillow block bearing, flange bearing.
Ordering insert-only or housing-only
State clearly whether you are ordering: (1) a complete unit, (2) an insert only to fit an existing housing, or (3) a housing only to take an existing insert. For (2) and (3), send the bore and outside diameter you measured so the match can be confirmed before shipping — see bearing housing for housing-only orders and insert bearing for insert-only orders.
Send the bore size, housing style and whether you need insert, housing or both to sales@fuli-bearings.com or use the request a quote form.
FAQ
How do I know which housing an insert came from?
Match the bore: a UC205 insert (25 mm bore) fits the housing seat on a UCP205, UCF205 or UCFL205, since all three use the same outside spherical diameter at that size. If you only have the insert, measure the bore and outside diameter and match them against the table below.
Can I buy just the housing if only the insert failed?
Yes, and the reverse — if only the housing is damaged, the insert can usually be reused. See bearing housing for ordering a housing on its own.
Is the bolt pattern the same across UCP, UCF and UCFL at the same bore?
No. Each housing style has its own base or flange shape, so bolt size and hole spacing differ by style even at the same bore — use the row for the specific housing style, not just the bore.