Cylindrical roller bearings
4,531 dimension rows · 4,531 model records · FAG, KOYO, NTN, SKF
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Cylindrical roller bearings: types, dimensions & brand filters
Rib arrangement determines axial location: NU, N, NJ and NUP are not functionally identical.
On this page9 sections ⌄
What is this bearing type?
Cylindrical roller bearings use cylindrical rollers to carry primarily radial load. The ring ribs determine whether the bearing permits axial displacement or locates the shaft. NU, N, NJ and NUP therefore describe a functional difference, not merely a spelling variation.
| Part or design | What it does | What to verify |
|---|---|---|
| NU / N | Common non-locating arrangements allow relative axial displacement. | Verify which ring is ribless and how the shaft is located elsewhere. |
| NJ | Supports axial location in one direction within design limits. | Do not assume it locates the shaft in both directions. |
| NUP / NH | Locating arrangements include additional rib/collar features; NH uses NJ with an HJ collar. | Retain every assembly component when identifying the replacement. |
On a small screen, scroll the table horizontally to read all three columns.
Variants that change the answer
Caged and full-complement designs trade different load and speed capabilities. Full complement adds rollers but does not retain the same high-speed capability as an otherwise comparable caged design. Multi-row versions need their own identification.
What the family name cannot tell you
Axial capacity is not the same as radial capacity and cannot be inferred from the bore. A dimensionally similar NU and NJ may perform different jobs in a shaft arrangement.
Identify the exact part before comparing
- Record rib arrangement and locating/non-locating role.
- Check cage/full-complement construction and any loose collar.
- Compare axial displacement, allowable loads and lubrication conditions in the exact record.
Inspect real catalogue records below →Decode N / NU / NJ markings →Compare exact products →Thermal and shaft tools →
Technical reference basis: NSK: Cylindrical Roller Bearings. Explanation and lookup workflow: BearingScope. Manufacturer-specific limits remain attached to the exact product record.
Cylindrical roller bearing types, axial location and operating checks
The important choice is not just roller versus ball. Identify the rib arrangement, number of rows and cage construction, then check whether the bearing must locate the shaft or allow thermal movement.
N, NU, NJ, NF, NUP and NH compared
The following describes common single-row constructions in the cited manufacturer references. All still require their own permitted load and displacement limits.
| Type | Rib / collar arrangement | Axial function |
|---|---|---|
| NU | Two outer-ring ribs; no inner-ring ribs | Non-locating: permits relative axial movement. |
| N | Two inner-ring ribs; no outer-ring ribs | Non-locating: permits relative axial movement. |
| NJ | Two outer-ring ribs and one inner-ring rib | Can react a limited axial load in one direction. |
| NF | Two inner-ring ribs and one outer-ring rib | Can react a limited axial load in one direction. |
| NUP | Two outer-ring ribs; inner ring with one integral rib and a loose rib | Locates in both axial directions within design limits. |
| NH (NSK reference) | NJ bearing combined with an HJ thrust collar | Locating assembly: the collar belongs in its identification. |
On a small screen, scroll the table horizontally.
A shaft's thermal expansion needs a deliberate path. Equal dimensions do not make an NU a functional substitute for an NJ or NUP. Keep loose collars with the correct assembly.
Single row, double row, four row and full complement
Row count and cage type are independent fields: a double-row bearing can also be a full-complement design. Record both instead of treating 'double row' as a complete specification.
| Construction | Why it is considered | Selection boundary |
|---|---|---|
| Single row | A compact radial support with a chosen axial function | Read the exact N/NU/NJ/NUP-type construction. |
| Double row — NN / NNU examples | High radial rigidity, including precision-machine spindle applications | Check bore form, clearance, accuracy and installation method. |
| Four row | High radial-load arrangements, especially rolling-mill roll necks | Not four loose single-row bearings; retain the complete assembly and service instructions. |
| Full complement | Additional rollers without a cage favour load capacity | The speed capability is not that of an otherwise comparable caged bearing. |
On a small screen, scroll the table horizontally.
Applications, advantages and high-speed limits
Cylindrical rollers provide line contact and strong radial support. Separable rings simplify many mounting arrangements. The trade-off is that axial behaviour depends on the ribs; a high radial rating does not supply a matching axial rating.
A high-speed search must retain the cage, lubrication, load and precision conditions. 'Full complement', 'high load' and 'high speed' cannot be combined into one assumed specification.
| Application question | Inspect first |
|---|---|
| Motor or gearbox radial support | Which support locates the shaft, and where does thermal movement occur? |
| Machine-tool spindle | Required radial stiffness, runout, bore form and installed clearance. |
| Rolling-mill roll neck | Multi-row assembly, radial duty, lubrication delivery and ring identity. |
| Crane sheave or pulley | Outer-ring rotation, full-complement variant, seals and relubrication access. |
On a small screen, scroll the table horizontally.
Split and sealed cylindrical designs
A split cylindrical roller bearing is a purpose-designed split assembly for locations where axial access is difficult. It is not a standard ring that may be cut in half. Keep the bearing, cartridge, housing and seals within the documented split-unit system.
Many ordinary separable cylindrical bearings are open. Special sheave-duty and other documented sealed designs also exist. 'Cylindrical' alone therefore proves neither that seals are present nor that a bearing is sealed for life.
Timken's split-unit reference describes access and maintenance benefits, not permission to substitute an unspecified housed unit. The unit's mounting and operating limits still govern.
Clearance and lubrication are separate from the type code
NUP explains an arrangement; C3 describes a clearance group. Neither code supplies the finished shaft fit, an allowable axial force or a lubricant specification. Fit and operating temperature can change the installed clearance.
For a clearance-chart request, first identify the bearing design, bore range and required clearance class. Use the exact manufacturer's applicable numerical table. No universal micrometre range is inferred from this family overview.
- Record the full code, bore form, cage and clearance designation.
- Keep unmounted, mounted and operating clearance distinct.
- Check grease or oil, replenishment route, speed and thermal conditions together.
- When comparing load or speed figures, preserve their units and lubrication conditions rather than copying a larger number from another variant.
Assembly and ring identification
Separability does not mean arbitrary ring interchange. NSK distinguishes interchangeable constructions from sets that must remain as supplied. Keep the original identities unless the exact catalogue explicitly permits mixing the relevant components.
- Isolate the machine and label the inner ring, roller assembly and any loose rib or collar.
- Inspect shaft and housing seats and identify the specified fit for each ring.
- Where the design permits, mount the rings separately with the correct tools.
- Align the rings carefully before bringing the roller assembly together; do not force a misaligned assembly over a roller edge.
- Confirm the locating direction or permitted axial movement, lubrication path and required installed clearance.
Do not replace a missing collar with a visually similar washer. Mounting force, heat limits and fit tolerances require the exact bearing and machine instructions.
Cylindrical roller versus ball or needle bearing
'Cylindrical ball bearing' mixes two rolling-element names. A cylindrical roller bearing contains rollers; a ball bearing contains balls. A needle bearing uses slender rollers and usually addresses a different radial-space and raceway problem.
For a fair comparison, start with available space, radial and axial duty, speed, stiffness and the shaft support arrangement. A higher radial rating cannot compensate for an incorrect locating function. Use the exact product records to compare dimensions and documented limits.
Questions to settle before selecting a model
Can an NU bearing take thrust?
A normal NU arrangement is non-locating; do not assign it an axial locating role. Use the exact design and support arrangement to identify where thrust is reacted.
Is full complement always better?
No. More rollers favour radial capacity, but removal of the cage changes the operating trade-off. The required speed, lubrication and duty can make a caged design preferable.
Does NUP mean a complete bearing without loose parts?
Not necessarily: the common NUP construction includes a loose rib. Preserve the complete assembly when identifying and comparing it.
Are all double-row cylindrical bearings tapered bore?
No. Bore form is a separate specification. Do not infer a tapered mounting seat from row count alone.
Reviewed 2026-10-01. Technical basis: JTEKT Cylindrical Roller Bearings: English overview and Japanese design descriptions; NSK Cylindrical Roller Bearings; NSK Bearing ABCs: Roller Bearings; Timken Four-Row Cylindrical Roller Bearing reference; Timken Split Cylindrical Roller Bearing Housed Units, 2018; NSK Bearing Maintenance: Mounting. Original BearingScope explanation and checklists. General guidance is not a model-specific installation instruction or replacement approval.
Application starting points
Where this family is used
Motors, gearboxes and heavily loaded radial positions.
Read equipment selection guides →Do not skip
Selection and interchange checks
Check locating role, axial displacement, cage or full complement, minimum load and lubrication.
Full verification checklist →Database-backed results
8,728 recordsCylindrical roller bearings — actual products
First 12 records. Open all results to filter brands and technical attributes. These are search candidates, not approved replacements.
| Brand / complete designation | Type | d×D×B (mm) | Closure | Original precision | Clearance |
|---|---|---|---|---|---|
| TIMKEN105RU02 R3 | Cylindrical roller bearing | 105×190×36 | Open | Not reported | Not reported |
| TIMKEN105RU32C3 | Cylindrical roller bearing | 105×190×65.088 | Open | Not reported | Not reported |
| TIMKEN105RU32 R3 | Cylindrical roller bearing | 105×190×65.088 | Open | Not reported | Not reported |
| TIMKEN110RIU473 R3 | Cylindrical roller bearing | 279.4×368.3×44.45 | Open | Not reported | Not reported |
| TIMKEN120RIT513 R3 | Cylindrical roller bearing | 304.8×406.4×50.8 | Open | Not reported | Not reported |
| TIMKEN125RIF550 | Cylindrical roller bearing | 317.5×419.1×50.8 | Open | Not reported | Not reported |
| TIMKEN125RIF550C3 | Cylindrical roller bearing | 317.5×419.1×50.8 | Open | Not reported | Not reported |
| TIMKEN130RIU553 | Cylindrical roller bearing | 330.2×444.5×57.15 | Open | Not reported | Not reported |
| TIMKEN130RIU553C3 | Cylindrical roller bearing | 330.2×444.5×57.15 | Open | Not reported | Not reported |
| TIMKEN130RIU553 R3 | Cylindrical roller bearing | 330.2×444.5×57.15 | Open | Not reported | Not reported |
| TIMKEN140RIF583 R3 | Cylindrical roller bearing | 355.6×469.9×57.15 | Open | Not reported | Not reported |
| TIMKEN140RU51 R3 | Cylindrical roller bearing | 140×220×36 | Open | Not reported | Not reported |
— = not recorded. Width conventions differ for tapered assemblies, thrust bearings and mounted units. Always inspect the dimensional drawing.
Filter all 8,728 records →All recorded subtypes in this family
Original catalogue descriptions are preserved in the records. Identical display names, including singular/plural variants, share one combined entry. Selecting a subtype opens its brand and technical filters.
Cylindrical roller bearings6,121Double row cylindrical roller bearing77Double row cylindrical roller bearing, nnu design5Double row full complement cylindrical roller bearing, nncf design1Double row full complement cylindrical roller bearing, nncf design, with relubrication feature43Double row full complement cylindrical roller bearing, nnf design, with integral sealing and relubrication feature34Four-row cylindrical roller bearing28Four-row cylindrical roller bearing, for long products27Full complement type cylindrical roller bearings86Full complement type cylindrical roller bearings for crane sheaves58Hybrid ceramic single row cylindrical roller bearing, nu design23Inner ring for four-row cylindrical roller bearings, for long products2Insocoat single row cylindrical roller bearing, nu design47Single row cylindrical roller bearing23Single row cylindrical roller bearing with extended inner ring, nub design8Single row cylindrical roller bearing, n design88Single row cylindrical roller bearing, nj design547Single row cylindrical roller bearing, nj design, with snap ring groove1Single row cylindrical roller bearing, njf design3Single row cylindrical roller bearing, nu design829Single row cylindrical roller bearing, nu design, without inner ring52Single row cylindrical roller bearing, nu or nj design, service component1Single row cylindrical roller bearing, nup design167Single row cylindrical roller bearing, nup design, with snap ring groove2Single row full complement cylindrical roller bearing, ncf design106Single row full complement cylindrical roller bearing, njg design5Skf cooper split cylindrical roller bearing with aluminium cage, ex type1Skf cooper split cylindrical roller bearing with brass cage, ex type103Skf cooper split cylindrical roller bearing with brass cage, gr type87Skf cooper split cylindrical roller bearing, 100 series, ex type3Skf cooper split cylindrical roller bearing, 100 series, gr type2Split cylindrical roller bearings2Super-precision double row cylindrical roller bearing24Super-precision double row cylindrical roller bearing with lubrication feature55Super-precision single row cylindrical roller bearing50Super-precision, high-speed design, single row cylindrical roller bearing17
No subtype matches this text.
Look up real bearing dimensions
Choose a bearing structure, then enter the dimensions you know. You can leave unknown dimensions blank. The chart contains 29,253 catalogue records whose bore, outside diameter and width or height symbols have been checked against retained manufacturer properties. It is not a complete ISO standard or an interchange list.
Changing units converts entered values; it does not reinterpret 12.7 mm as 12.7 inches. Inch fractions such as 1/2 are accepted. A blank field means unknown, not zero.
Showing the first 24 of 4,531 Cylindrical roller bearings records. Filters apply immediately.
| Brand / complete designation | Original construction | Bore d | Outside D | Width / height | Recorded closure |
|---|---|---|---|---|---|
| FAGN202-E-XL-TVP2 | Cylindrical roller bearing | 15 mm | 35 mm | 11 mm (B) | Not reported |
| SKFNJ 202 ECP | Single row cylindrical roller bearing, NJ design | 15 mm | 35 mm | 11 mm (B) | Without |
| FAGNJ202-E-XL-TVP2 | Cylindrical roller bearing | 15 mm | 35 mm | 11 mm (B) | Not reported |
| FAGNJ202-E-XL-TVP2-C3 | Cylindrical roller bearing | 15 mm | 35 mm | 11 mm (B) | Not reported |
| SKFNU 202 ECP | Single row cylindrical roller bearing, NU design | 15 mm | 35 mm | 11 mm (B) | Without |
| FAGNU202-E-XL-TVP2 | Cylindrical roller bearing | 15 mm | 35 mm | 11 mm (B) | Not reported |
| SKFN 203 ECP | Single row cylindrical roller bearing, N design | 17 mm | 40 mm | 12 mm (B) | Without |
| SKFN 203 ECPH | Single row cylindrical roller bearing, N design | 17 mm | 40 mm | 12 mm (B) | Without |
| FAGN203-E-XL-TVP2 | Cylindrical roller bearing | 17 mm | 40 mm | 12 mm (B) | Not reported |
| SKFNJ 203 ECP | Single row cylindrical roller bearing, NJ design | 17 mm | 40 mm | 12 mm (B) | Without |
| FAGNJ203-E-XL-TVP2 | Cylindrical roller bearing | 17 mm | 40 mm | 12 mm (B) | Not reported |
| FAGNJ203-E-XL-TVP2-C3 | Cylindrical roller bearing | 17 mm | 40 mm | 12 mm (B) | Not reported |
| FAGNJ203-E-XL-TVP2-C4 | Cylindrical roller bearing | 17 mm | 40 mm | 12 mm (B) | Not reported |
| SKFNU 203 ECP | Single row cylindrical roller bearing, NU design | 17 mm | 40 mm | 12 mm (B) | Without |
| FAGNU203-E-XL-M1A | Cylindrical roller bearing | 17 mm | 40 mm | 12 mm (B) | Not reported |
| FAGNU203-E-XL-TVP2 | Cylindrical roller bearing | 17 mm | 40 mm | 12 mm (B) | Not reported |
| SKFNUP 203 ECP | Single row cylindrical roller bearing, NUP design | 17 mm | 40 mm | 12 mm (B) | Without |
| FAGNUP203-E-XL-TVP2 | Cylindrical roller bearing | 17 mm | 40 mm | 12 mm (B) | Not reported |
| SKFNJ 2203 ECP | Single row cylindrical roller bearing, NJ design | 17 mm | 40 mm | 16 mm (B) | Without |
| FAGNJ2203-E-XL-TVP2 | Cylindrical roller bearing | 17 mm | 40 mm | 16 mm (B) | Not reported |
| SKFNU 2203 ECP | Single row cylindrical roller bearing, NU design | 17 mm | 40 mm | 16 mm (B) | Without |
| FAGNU2203-E-XL-TVP2 | Cylindrical roller bearing | 17 mm | 40 mm | 16 mm (B) | Not reported |
| SKFNUP 2203 ECP | Single row cylindrical roller bearing, NUP design | 17 mm | 40 mm | 16 mm (B) | Without |
| FAGNUP2203-E-XL-TVP2 | Cylindrical roller bearing | 17 mm | 40 mm | 16 mm (B) | Not reported |
Page 1
Read the width symbol: B, T and H are not interchangeable labels. For a tapered pair use assembly T, not the cone width. Needle designs without an inner ring may use roller-set bore Fw instead of d and are outside this d/D chart. Matched sets, housings and loose cups/cones are also excluded. Open the full product to check drawings, ratings, seals, clearance and precision.
Snapshot 2026-10-02. Every row keeps its actual product link and source-reported units; missing or ambiguous geometry is withheld. Equal nominal size alone does not approve replacement. Inch display is a conversion, rounded to six decimals, not an inch-series classification.
Bearing size charts: PDF downloads
Download searchable English tables with the brand, complete designation, source-labelled dimensions in millimetres and links to the matching model records. Choose a family or a series; the charts preserve construction differences instead of treating every size as interchangeable.
Scope: original BearingScope reference tables from our verified catalogue snapshots. These are not manufacturer manuals, CAD, full technical datasheets or a complete list of all bearing sizes. Equal dimensions do not establish interchangeability. No load ratings, tolerances or vehicle fitment are inferred.
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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.