UCP208 bearing dimensions & suffix variants
Look up recorded dimensions for designations beginning with UCP208. The table retains complete manufacturer designations so special suffixes and different dimensional variants remain visible.
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Find by measured dimensions
Enter bore d, outside diameter D and width B. Use decimals or inch fractions such as 1/2 or 1 1/4.
UCP208 dimensions and recorded technical data
Use the named dimensions for each complete record below. A generic d×D×B answer is not asserted where the base record is missing, dimension symbols are unverified, or the product uses a different geometry such as a housing or thrust assembly. Suffix records are not substituted for a missing base specification.
The numeric series boundary is preserved: a longer number is not included merely because its first digits match. 4 recorded variants are listed. A dash means the value is missing, not zero.
Read the original dimensions for UCP208
Boundary size alone does not describe every ring, shoulder or assembled unit. These tables retain the recorded manufacturer labels, symbols, units and limits for each complete marking. Expand a record to check its detailed measurements.
Important: an approximate value, a minimum or a maximum keeps that qualifier. These reference extracts are not CAD drawings, fit recommendations or replacement approvals.
FAG UCP208 — 11 dimension fields
Plummer block housing unit. Source: Schaeffler medias — FAG; recorded snapshot 2026-09-02.
This record can describe a housed unit rather than a loose bearing. Housing length, bolt spacing and centre height must be checked separately from shaft bore; do not interpret them as bearing outside diameter.
Minimum and maximum mounting dimensions are limits, not nominal bearing dimensions. Check shaft/housing shoulders and fillets against the current drawing before designing a seat.
Bearing and component measurements
| Measurement | Source symbol | Recorded value |
|---|---|---|
| Bore diameter | d | 40 mm |
| Length total | L | 184 mm |
| Height | H2 | 98 mm |
| Distance shaft axis | H | 49.2 mm |
| Width (base) | A | 54 mm |
| Height (base) | H1 | 18 mm |
| Width | B | 49.2 mm |
| Distance of raceway to locking collar | S1 | 30.2 mm |
Mounting limits and abutments
| Measurement | Source symbol | Recorded value |
|---|---|---|
| Distance fixing bore | J | 137 mm |
| Width (slot) | N | 17 mm |
| Length (slot) | N1 | 21 mm |
FAG UCP208-24 — 11 dimension fields
Plummer block housing unit. Source: Schaeffler medias — FAG; recorded snapshot 2026-09-02.
This record can describe a housed unit rather than a loose bearing. Housing length, bolt spacing and centre height must be checked separately from shaft bore; do not interpret them as bearing outside diameter.
Minimum and maximum mounting dimensions are limits, not nominal bearing dimensions. Check shaft/housing shoulders and fillets against the current drawing before designing a seat.
Bearing and component measurements
| Measurement | Source symbol | Recorded value |
|---|---|---|
| Bore diameter | d | 38.1 mm |
| Length total | L | 184 mm |
| Height | H2 | 98 mm |
| Distance shaft axis | H | 49.2 mm |
| Width (base) | A | 54 mm |
| Height (base) | H1 | 18 mm |
| Width | B | 49.2 mm |
| Distance of raceway to locking collar | S1 | 30.2 mm |
Mounting limits and abutments
| Measurement | Source symbol | Recorded value |
|---|---|---|
| Distance fixing bore | J | 137 mm |
| Width (slot) | N | 17 mm |
| Length (slot) | N1 | 21 mm |
Catalogue parameters for UCP208
Choose the complete brand and marking before reading a value. These source-labelled records add dimensions, construction and engineering properties where they were recorded; a shared model number does not establish interchangeability.
Units, ranges and minimum/maximum qualifiers are retained. The data is a dated catalogue reference, not a certified drawing, a complete current specification or an operating approval.
KOYO UCP208 — 18 recorded parameters
Ball bearing unit
Reference: JTEKT / Koyo catalogue; source snapshot 2026-09-02.
KOYO UCP208 is a bearing-unit reference with a nominal bore d = 40 mm. Its catalogue mounting drawing also lists H = 49.2 mm, L = 184 mm, A = 54 mm, J = 137 mm, H2 = 98 mm. These housing and mounting measurements must not be compressed into the d×D×B size of a loose bearing.
Use the exact unit drawing when checking the mounting footprint and shaft position. Symbols such as H and L describe the illustrated unit geometry; their direction must not be assumed to be the same on pillow-block and flange-unit constructions.
Calculated inch drawing values: d = 1.574803 in; H = 1.937008 in; L = 7.244094 in; A = 2.125984 in; J = 5.393701 in; N = 0.669291 in; N1 = 0.826772 in; H1 = 0.708661 in; H2 = 3.858268 in; L1 = 2.086614 in; B = 1.937008 in; S = 0.748031 in. These are conversions of the recorded metric dimensions using exactly 25.4 mm/in, rounded to six decimals, not a separate inch-series unit or a fit tolerance.
The unit number and bore do not prove a cross-brand interchange. Check the insert, shaft locking arrangement, bolt or slot dimensions and any lubrication or sealing details in the same record.
This can be a unit or housing record. Bolt spacing, housing envelope, centre height and the insert identity need separate checks; do not interpret every outside dimension as bearing D.
Values shown are retained from the recorded source. Zero boundary dimensions and zero load ratings from incomplete legacy feeds are withheld rather than presented as usable specifications.
Technical Data
| Parameter | Source symbol | Recorded value |
|---|---|---|
| d | Not separately recorded | 40 mm |
| H | Not separately recorded | 49.2 mm |
| L | Not separately recorded | 184 mm |
| A | Not separately recorded | 54 mm |
| J | Not separately recorded | 137 mm |
| N | Not separately recorded | 17 mm |
| N1 | Not separately recorded | 21 mm |
| H1 | Not separately recorded | 18 mm |
| H2 | Not separately recorded | 98 mm |
| L1 | Not separately recorded | 53 mm |
| B | Not separately recorded | 49.2 mm |
| S | Not separately recorded | 19 mm |
| Bolt Size | Not separately recorded | M14 |
| Basic Load Ratings : Cr | Not separately recorded | 29.1 kN |
| Basic Load Ratings : C0R | Not separately recorded | 17.8 kN |
| Fatigue Load Limit : Cu | Not separately recorded | 0.809 kN |
| Factor : F0 | Not separately recorded | 14.0 |
| Nipple Size | Not separately recorded | 1/4-28UNF |
No recorded variant matches these filters. Clear a filter to see other records; no substitute has been inferred.
| Brand / full designation | Named dimensions (mm / in) | Dynamic C (kN) | Static C0 (kN) | Reference speed (rpm) | Limiting speed (rpm) | Mass (kg / g) |
|---|---|---|---|---|---|---|
| FAGUCP208Plummer block housing unit |
| — | — | — | — | 1.96 kg1960 g |
| KOYOUCP208Ball bearing unit |
| 29.1 kN | 17.8 kN | — | — | — |
| FAGUCP208-24Plummer block housing unit |
| — | — | — | — | 2 kg2000 g |
| FAGUCP208-25Plummer block housing unit |
| — | — | — | — | 1.96 kg1960 g |
Compare recorded seals, clearance, precision and materials
Manufacturer wording is retained. A missing property is not inferred from another brand or a similar suffix.
| Brand / designation | Closure | Original precision | Clearance | Cage | Material | Lubricant |
|---|---|---|---|---|---|---|
| FAG UCP208 | Not recorded | Not recorded | Not recorded | Not recorded | GG — Grey cast iron | Not recorded |
| KOYO UCP208 | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| FAG UCP208-24 | Not recorded | Not recorded | Not recorded | Not recorded | GG — Grey cast iron | Not recorded |
| FAG UCP208-25 | Not recorded | Not recorded | Not recorded | Not recorded | GG — Grey cast iron | Not recorded |
How to compare these values
- Use the displayed dimension names and original symbols. Housing length L, height H2 and flange width are not bearing outside diameter D. A catalogue width with an unverified symbol must not be assumed to be inner-ring width B or assembly width T. Open the product record for mounting dimensions and geometry.
- Inch values are calculated from the recorded millimetres using 25.4 mm per inch, rounded to six decimal places. They do not change a metric bearing into an inch-series bearing. Gram values are converted from the recorded mass in kilograms.
- C and C0 describe different rating conditions. They are not a single safe working-load limit and cannot replace an application load calculation.
- Reference and limiting speeds are separate catalogue values. The source grease/oil context is shown where recorded. Lubricant, seals, loads, fit, clearance and cooling affect the usable operating speed.
- A common base number does not prove equivalent seals, clearance, precision, material or interchangeability. Open the full designation for these fields.
Related prefix matches — other model numbers may appear
These discovery results can contain a longer number or a different component. They are not specifications for the requested exact model. Open the complete product to inspect its original geometry.
Check the drawing before substituting
Nominal dimensions are not shaft-fit tolerances. Different variants can add grooves, flanges, wider rings or assembly components. When the table has different dimensions, the complete designation—not the shared prefix—controls.
Reference basis & data limits
Manufacturer terminology is retained in the product records. Technical reference basis: JTEKT Basic Bearing Knowledge (boundary dimensions, tolerance classes and lubrication); NSK Bearing ABCs (lubrication, designations and clearance); NTN technical FAQs (closure codes and component interchange); SKF rolling-bearing selection and maintenance references.
Selection workflows and catalogue grouping are BearingScope editorial aids. Verify the current drawing and application requirements before using a candidate. Missing database information is not converted into an assumed match.