30319 bearing dimensions & suffix variants
Look up recorded dimensions for designations beginning with 30319. The table retains complete manufacturer designations so special suffixes and different dimensional variants remain visible.
On this page5 sections ⌄
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.
30319 dimensions and recorded technical data
The recorded 30319 base designation measures 95×200×45 mm (inside diameter d × outside diameter D × width B). This answer uses unsuffixed records from KOYO. It does not assign the same dimensions or operating ratings to every suffix.
The numeric series boundary is preserved: a longer number is not included merely because its first digits match. 7 recorded variants are listed. A dash means the value is missing, not zero.
Read the original dimensions for 30319
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.
KOYO 30319 — 5 dimension fields
Tapered roller bearing. Source: JTEKT / Koyo product catalogue; recorded snapshot 2026-09-02.
For a tapered bearing, total assembly width T, inner-ring width B and outer-ring width C are different measurements. Keep the complete cup/cone or matched assembly designation; do not replace T with B when checking available axial space.
Bearing and component measurements
| Measurement | Source symbol | Recorded value |
|---|---|---|
| Bore diameter | d | 95 mm |
| Outside diameter | D | 200 mm |
| Total width / height | T | 49.5 mm |
| Inner-ring width | B | 45 mm |
| Outer-ring width | C | 38 mm |
TIMKEN 30319 — 14 dimension fields
Tapered roller bearing. Source: Timken official dimensional catalogue; recorded snapshot 2026-10-01.
Metric and inch measurements below are the values published together in this dated manufacturer record. Their displayed rounding is retained; the inch column does not turn a metric design into an inch-series design.
This assembly is identified by cone X30319M and cup Y30319M. T is the assembled width; B and C are the separate ring widths. A loose cone, a loose cup and the complete assembly are not the same item.
Shaft and housing backing-shoulder dimensions, maximum fillet radii and signed offsets answer different installation questions. Preserve the named face, limit and sign; they are not additional bearing outside diameters or nominal widths.
This factual extract is a dimensional reference, not an OEM fitment statement, a replacement approval or a downloadable CAD model.
Bearing and component measurements
| Measurement | Source symbol | Recorded value |
|---|---|---|
| Bore (d) | d | 95 mm / 3.7402 in |
| O.D. (D) | D | 200 mm / 7.874 in |
| Width (T) | T | 49.5 mm / 1.9488 in |
| Inner Ring Width (B) | B | 45 mm / 1.7717 in |
| Outer Ring Width (C) | C | 38 mm / 1.4961 in |
| Effective Center Location | Not supplied separately | -9.4 mm / -0.37 in |
Mounting limits and abutments
| Measurement | Source symbol | Recorded value |
|---|---|---|
| Max Shaft Fillet Radius | Not supplied separately | 4 mm / 0.160 in |
| Max Housing Fillet Radius | Not supplied separately | 3 mm / 0.12 in |
| Shaft Backing Shoulder Dia. - Frontface (da) | da | 111 mm / 4.37 in |
| Shaft Backing Shoulder Dia. - Backface (db) | db | 118 mm / 4.65 in |
| Housing Backing Shoulder Dia. - Frontface (Da) | Da | 184 mm / 7.24 in |
| Housing Backing Shoulder Dia. - Backface (Db) | Db | 182 mm / 7.17 in |
| Cage Location rel. to BF (Aa) | Aa | 3.8 mm / 0.15 in |
| Cage Location rel. to FF (Ab) | Ab | 6.1 mm / 0.24 in |
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) |
|---|---|---|---|---|---|---|
| SKF30319Single row tapered roller bearing |
| 353 kN | 390 kN | 2600 rpm | 3400 rpm | 6.45 kg6450 g |
| TIMKEN30319Tapered roller bearing |
| 404 kN | 492 kN | — | — | 6.64 kg6640 g |
| KOYO30319Tapered roller bearing |
| 396 kN | 368 kN | — | 2000 rpmLimiting Speeds(Grease Lub.): 2000 min-1Limiting Speeds(Oil Lub.): 2600 min-1 | 6.32 kg6320 g |
| FAG30319-ATapered roller bearing |
| 360 kN | 440 kN | 2950 rpm | 3650 rpm | 6.7 kg6700 g |
| FAG30319-HTapered roller bearing |
| 342 kN | 440 kN | 2950 rpm | 2920 rpm | 6.7 kg6700 g |
| KOYO30319DJRTapered roller bearing |
| 398 kN | 391 kN | — | 1700 rpmLimiting Speeds(Grease Lub.): 1700 min-1Limiting Speeds(Oil Lub.): 2300 min-1 | 6.68 kg6680 g |
| KOYO30319JRTapered roller bearing |
| 465 kN | 455 kN | — | 2000 rpmLimiting Speeds(Grease Lub.): 2000 min-1Limiting Speeds(Oil Lub.): 2600 min-1 | 6.96 kg6960 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 |
|---|---|---|---|---|---|---|
| SKF 30319 | Without | Not recorded | Not recorded | Sheet metal | Not recorded | None |
| TIMKEN 30319 | Open | ABMA Class K | Not recorded | Steel cage | Not recorded | Not recorded |
| KOYO 30319 | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| FAG 30319-A | Not recorded | PN — Normal (ISO 492:2023) | Not recorded | Standard — Sheet steel cage, window cage, roller-guided | Not recorded | Not recorded |
| FAG 30319-H | Not recorded | PN — Normal (ISO 492:2023) | Not recorded | Standard — Sheet steel cage, window cage, roller-guided | Not recorded | Not recorded |
| KOYO 30319DJR | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| KOYO 30319JR | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded | 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.
30319
Tapered roller bearing
View full technical record →KOYO30319
Tapered roller bearing
View full technical record →SKF30319
Single row tapered roller bearing
View full technical record →FAG30319-A
Tapered roller bearing
View full technical record →KOYO30319DJR
Tapered roller bearing
View full technical record →FAG30319-H
Tapered roller bearing
View full technical record →KOYO30319JR
Tapered roller bearing
View full technical record →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.