# Pillow block units UCP204–UCP210, UCF204–UCF210, UCFL204–UCFL209: bore, centre height, bolt spacing, slots

> What are the dimensions of UCP205, UCP206, UCF205 and UCFL205 mounted bearing units: shaft diameter, centre height, bolt spacing and bolt slot?

- Category: Hardware › Bearings, rails & motion
- Kind: Standard part
- Basis: FYH catalogue (via Misumi) and Ignera's catalogue for UCP, agreeing on the key columns; UCF from Ignera, UCFL from FYH; McMaster-Carr linked for CAD
- Page: https://xemstudio.com/objects/pillow-block-units-ucp-ucf-ucfl/ · JSON: https://xemstudio.com/api/geometry?object=pillow-block-units-ucp-ucf-ucfl · Plain text: https://xemstudio.com/objects/pillow-block-units-ucp-ucf-ucfl/sheet.txt
- License: dimension sheet CC BY 4.0 (Xem Studio); files CC BY 4.0 or their publisher's license
- Use in every chat: add https://xemstudio.com/mcp as a connector (https://xemstudio.com/use-with-ai/)

**Exact dimensions.** True size, with no tolerance added.

## Notes

- UCP, UCF and UCFL are mounted ball bearing units: a UC insert bearing (spherical OD, set-screw bore) in a cast-iron housing. UCP is the two-bolt pillow block (foot mounts to a surface), UCF a four-bolt square flange, UCFL a two-bolt rhombic (oval) flange. The first digits are the bore: UCP204 = 20 mm shaft, UCP205 = 25, 206 = 30, 207 = 35, 208 = 40, 209 = 45, 210 = 50; small 8 to 17 mm printer blocks (KP08, KFL08) are on the bearing-housings page.
- UCP numbers: the FYH catalogue (via Misumi, headings d H L A J N N1 H1 H2 L1 B S) and Ignera's catalogue (headings d H1 A E P S1 S2 H2 H B F) agree on the shaft d, centre height, length, bolt spacing J, base width A, slot N, bearing width B and S for 204 to 209; UCP210 is Ignera's row, confirmed on the key columns by an FYH scan (H 57.2, L 206, J 159, A 60, N 20, H1 21, H2 113, B 51.6, S 19). Differences are shown in the cells: base thickness H1 (14 / 15 against 16 for UCP204 / 205), total height H2 (UCP205 70 against 71, UCP207 95 against 93, UCP208 98 against 100). N1 (FYH 18 to 21, Ignera 19 to 23) disagrees on every row and is left out.
- UCF numbers are Ignera's table (headings d A E C G L S Z B F, bolt size); the letters differ between catalogues and are not defined in the text, so they are kept as printed, with only the unambiguous ones read: A is the flange side, E the bolt spacing, S the hole, B the bearing width (it equals the UCP and UCFL B column on every size). FYH's scrambled UCF page agrees on the 204 / 205 rows (86 / 95 side, 64 / 70 bolt spacing, 33.3 / 35.8). C (flange thickness) and G are single-source and ambiguous against the FYH columns, so G is left out.
- UCFL numbers (204 to 209) are the FYH table via Misumi; the UCFL205 row equals the FYH page via AIMS Industrial. B equals the UCP B column on every size. The bolt column is the bolt the slot / hole N takes.
- McMaster-Carr's pillow blocks and block bearings are linked as the per-part CAD source; the category page was readable only as inch filter values, so none of its numbers are mixed in.
- Files: none. The cast housings have a spherical bore pocket, a grease boss and a web whose outline is not in the tables; a solid from these numbers would be invented.
- Left out: UCP201 to 203 (12 to 17 mm), UCP211 and larger, UCPH high-base, UCPA tapped base, UCT take-up, KP / KFL 000 to 005 (the tables read were unlabelled), UCFC round flange, grease fitting, load ratings, mass.

## Sizes

| unit | shaft d, mm | centre height H, mm | length L, mm | bolt spacing J, mm | base width A, mm | bolt slot N, mm | base thickness H1, mm | total height H2, mm | L1, mm | bearing width B, mm | S, mm | bolt size |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UCP204 | 20 | 33.3 | 127 | 95 | 38 | 13 | 16 (Ignera 14) | 65 | 36 | 31 | 12.7 | M10 |
| UCP205 | 25 | 36.5 | 140 | 105 | 38 | 13 | 16 (Ignera 15) | 70 (Ignera 71) | 38 | 34.1 | 14.3 | M10 |
| UCP206 | 30 | 42.9 | 165 | 121 | 48 | 17 | 17 | 84 | 48 | 38.1 | 15.9 | M14 |
| UCP207 | 35 | 47.6 | 167 | 127 | 48 | 17 | 18 | 95 (Ignera 93) | 47 | 42.9 | 17.5 | M14 |
| UCP208 | 40 | 49.2 | 184 | 137 | 54 | 17 | 18 | 98 (Ignera 100) | 53 | 49.2 | 19 | M14 |
| UCP209 | 45 | 54 | 190 | 146 | 54 | 17 | 20 | 106 | 55 | 49.2 | 19 | M14 |
| UCP210 | 50 | 57.2 | 206 | 159 | 60 | 20 | 21 | 113 | 60 (FYH via AIMS) | 51.6 | 19 | M16 |
| UCF204 (square flange) | 20 | A 86 square | bolt spacing E 64 | C 15 | L 25.5 | S 12 (hole) | Z 33.3 | B 31 | F 12.7 | — | — | M10 |
| UCF205 (square flange) | 25 | A 95 square | bolt spacing E 70 | C 16 | L 27 | S 12 (hole) | Z 35.8 | B 34.1 | F 14.3 | — | — | M10 |
| UCF206 (square flange) | 30 | A 108 square | bolt spacing E 83 | C 18 | L 31 | S 12 (hole) | Z 40.2 | B 38.1 | F 15.9 | — | — | M10 |
| UCF207 (square flange) | 35 | A 117 square | bolt spacing E 92 | C 19 | L 34 | S 14 (hole) | Z 44.4 | B 42.9 | F 17.5 | — | — | M12 |
| UCF208 (square flange) | 40 | A 130 square | bolt spacing E 102 | C 21 | L 36 | S 16 (hole) | Z 51.2 | B 49.2 | F 19 | — | — | M14 |
| UCF209 (square flange) | 45 | A 137 square | bolt spacing E 105 | C 22 | L 38 | S 16 (hole) | Z 52.2 | B 49.2 | F 19 | — | — | M14 |
| UCF210 (square flange) | 50 | A 143 square | bolt spacing E 111 | C 22 | L 40 | S 16 (hole) | Z 54.6 | B 51.6 | F 19 | — | — | M14 |
| UCFL204 (rhombic flange) | 20 | H 113 | L 60 | A 25.5 | J 90 | N 12 | A1 11 | A2 15 | A0 33.3 | B 31 | S 12.7 | M10 |
| UCFL205 (rhombic flange) | 25 | H 130 | L 68 | A 27 | J 99 | N 16 | A1 13 | A2 16 | A0 35.8 | B 34.1 | S 14.3 | M14 |
| UCFL206 (rhombic flange) | 30 | H 148 | L 80 | A 31 | J 117 | N 16 | A1 13 | A2 18 | A0 40.2 | B 38.1 | S 15.9 | M14 |
| UCFL207 (rhombic flange) | 35 | H 161 | L 90 | A 34 | J 130 | N 16 | A1 14 | A2 19 | A0 44.4 | B 42.9 | S 17.5 | M14 |
| UCFL208 (rhombic flange) | 40 | H 175 | L 100 | A 36 | J 144 | N 16 | A1 14 | A2 21 | A0 51.2 | B 49.2 | S 19 | M14 |
| UCFL209 (rhombic flange) | 45 | H 188 | L 108 | A 38 | J 148 | N 19 | A1 15 | A2 22 | A0 52.2 | B 49.2 | S 19 | M16 |

## Where the files are

- FYH catalogue (via Misumi): [Pillow block units UCP: d, H, L, A, J, N, N1, H1, H2, L1, B, S (page 84)](https://mx.c.misumi-ec.com/en/book/FYH1_SEA_01/pdf/0084.pdf) — web — Publisher's page; dimensions are facts
- Ignera (mounted units catalogue): [UCP pillow blocks 204 to 210: d, H1, A, E, P, S1, S2, H2, H, B, F](https://www.ignera.lt/image/catalog/product/UCP-cx.pdf) — web — Publisher's page; dimensions are facts
- Ignera (mounted units catalogue): [UCF square flange units 204 to 210: d, A, E, C, G, L, S, Z, B, F](https://www.ignera.lt/image/catalog/product/UCF-cx.pdf) — web — Publisher's page; dimensions are facts
- FYH catalogue (via Misumi): [UCFL rhombic flange units 201 to 209: d, H, L, A, J, N, A1, A2, A0, B, S (page 176)](https://mx.c.misumi-ec.com/en/book/FYH1_SEA_01/pdf/0176.pdf) — web — Publisher's page; dimensions are facts
- FYH catalogue (via AIMS Industrial): [UCP / UCFL / UCF pages 82 to 113 (used only to cross-check UCP210, UCFL204 and UCFL205)](https://aimsindustrial.com.au/cdn/shop/files/FYH-Mounted-Bearing-Units-Catalogue-Pages-84-88.pdf) — web — Publisher's page; dimensions are facts
- FYH catalogue (via AIMS Industrial): [UCFL pages 110-113 (UCFL205 row used as a cross-check)](https://aimsindustrial.com.au/cdn/shop/files/FYH-Mounted-Bearing-Units-Catalogue-Pages-110-113.pdf) — web — Publisher's page; dimensions are facts
- McMaster-Carr: [Pillow blocks (free STEP/IGES per part, for your own design use; no redistribution)](https://www.mcmaster.com/products/pillow-blocks/) — STEP, IGES, PDF — McMaster-Carr site terms: personal design use, no redistribution (verify at link)
- McMaster-Carr: [Block (mounted) bearings (free STEP/IGES per part, for your own design use; no redistribution)](https://www.mcmaster.com/block-bearings) — STEP, IGES, PDF — McMaster-Carr site terms: personal design use, no redistribution (verify at link)

## Questions

**What are the dimensions of a UCP205?**

Shaft Ø25, centre height 36.5, length 140, bolt spacing 105, base 38 wide, 13 mm slots (M10 bolts), bearing width 34.1.

**What is the bolt spacing of a UCFL205?**

99 mm between the two bolts, Ø16 holes for M14, flange 130 long, bore 25.

**What is the bolt spacing of a UCF205?**

70 mm between holes on a 95 mm square flange, M10 bolts.

**What shaft does a UCP206 take?**

30 mm (UC206 insert), centre height 42.9, length 165, bolt spacing 121.

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