UC 200 Series Insert Bearing Dimensions
Bore, OD, total width and inner ring width for UC204 to UC212 insert bearings, set screw size, and the housings each insert fits. ISO 9628 dimensions.
Dimensions for the UC 200 series insert bearing, the most common insert family in mounted bearing units. All figures are bore (d), outside diameter (D), total width (B) and inner ring width (C).
UC204 to UC212 dimensions
| Model | Bore d (mm) | OD D (mm) | Total width B (mm) | Inner ring width C (mm) |
|---|---|---|---|---|
| UC204 | 20 | 47 | 31 | — |
| UC205 | 25 | 52 | 34.1 | 17 |
| UC206 | 30 | 62 | 38.1 | 19 |
| UC207 | 35 | 72 | 42.9 | 20 |
| UC208 | 40 | 80 | 49.2 | 21 |
| UC209 | 45 | 85 | 49.2 | 22 |
| UC210 | 50 | 90 | 51.6 | — |
| UC211 | 55 | 100 | 55.6 | 25 |
| UC212 | 60 | 110 | 65.1 | 27 |
Locking is by two set screws through the extended inner ring, tightened against the shaft. The ring is bored round with a light interference-style clearance for the shaft to pass through before the set screws are tightened — see insert bearing for the full series and the SB and SA alternatives.
Housings that fit each size
Every bore in this table takes the matching UCP (pillow block), UCF (flange, square) and UCFL (flange, oval) housing at the same number — a UC205 fits a UCP205, UCF205 or UCFL205. See the insert bearing to housing matcher for the full set, or the shaft size to mounted bearing selector to start from a shaft diameter instead.
Send the model number and quantity to sales@fuli-bearings.com or use the request a quote form; FULI confirms current dimensions against the production drawing before quoting.
Inch bore versions
| Metric model | Inch model | Bore (in) | Bore (mm) |
|---|---|---|---|
| UC204 | UC204-12 | 3/4" | 19.05 |
| UC205 | UC205-14 | 7/8" | 22.23 |
| UC205 | UC205-15 | 15/16" | 23.81 |
| UC205 | UC205-16 | 1" | 25.40 |
| UC206 | UC206-17 | 1-1/16" | 26.99 |
| UC206 | UC206-18 | 1-1/8" | 28.58 |
| UC206 | UC206-19 | 1-3/16" | 30.16 |
| UC206 | UC206-20 | 1-1/4" | 31.75 |
| UC208 | UC208-24 | 1-1/2" | 38.10 |
| UC208 | UC208-25 | 1-9/16" | 39.69 |
Each inch bore insert has the same outside diameter and ring widths as the metric insert of the same size; only the bore is different. Write the inch designation on your order, for example UC205-16.
FAQ
What does the inner ring width (C) tell me?
It is the width of the extended inner ring that the set screws pass through; the total width (B) includes the full outer ring and any seal. Both matter when checking clearance inside a housing or a custom bracket.
Which housings fit a UC205?
UCP205 (pillow block), UCF205 (flange, square) and UCFL205 (flange, oval) all take a UC205 insert — see the insert bearing to housing matcher for the full set at each bore.
Is UC205 the same insert as SB205 or SA205?
Same bore and outside diameter, but a different locking method. UC uses a wide inner ring with two set screws; SB uses a narrower inner ring with set screws; SA uses an eccentric locking collar instead of set screws. They are not interchangeable without changing the locking method.