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74550 bearing dimensions & suffix variants
Look up recorded dimensions for designations beginning with 74550. The table retains complete manufacturer designations so special suffixes and different dimensional variants remain visible.
On this page6 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.
TIMKEN 74550 — individual cone dimensions
TIMKEN 74550 is an individual tapered-roller cone: the inner ring, rollers and cage, not the complete cone-and-cup bearing. The manufacturer lists bore d = 139.700 mm (5 1/2 in) and inner-ring width B = 47.625 mm (1.875 in).
| Measurement | Symbol | Metric | Inches |
|---|---|---|---|
| Bore (d) | d | 139.700 mm | 5 1/2 in |
| Inner Ring Width (B) | B | 47.625 mm | 1.875 in |
| Effective Center Location | Not specified | 2.3 mm | 0.09 in |
| Shaft Backing Shoulder Diameter - Frontface (da) | da | 151 mm | 5.94 in |
| Shaft Backing Shoulder Diameter - Backface (db) | db | 158 mm | 6.22 in |
| Cage Location rel. to BF (Aa) | Aa | 4.3 mm | 0.17 in |
| Cage Location rel. to FF (Ab) | Ab | 2.8 mm | 0.11 in |
Use the component number correctly
- The bore identifies the shaft-side nominal opening. B measures this cone only; it is not the assembled bearing width T. This single-cone record does not establish an outside diameter D or a matching cup.
- Preserve the full component number and its suffix. A shared prefix, similar ring size or a related-products suggestion does not approve a cone/cup combination or a cross-brand replacement.
- For a complete bearing, check both component markings and the manufacturer’s assembled d×D×T record. B+C is not a valid way to calculate T. A seal, axle rating, vehicle application and tightening procedure need their own evidence.
- Optional measurements with inconsistent printed metric and inch values are omitted from this supplement: Max Shaft Fillet Radius. Verify the manufacturer drawing before using these particular limits.
Factual reference: Timken official individual-component catalogue; source snapshot 2026-10-02. Original interpretation by BearingScope. These measurements do not certify a complete assembly, fit or interchange.
74550 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. 41 recorded variants are listed. A dash means the value is missing, not zero.
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) |
|---|---|---|---|---|---|---|
| TIMKEN74550 / 74845Tapered roller bearing |
| 382 kN | 614 kN | — | — | 5.89 kg5890 g |
| TIMKEN74550 / 74846XTapered roller bearing |
| 382 kN | 614 kN | — | — | 5.91 kg5910 g |
| TIMKEN74550 / 74850Tapered roller bearing |
| 382 kN | 614 kN | — | — | 5.99 kg5990 g |
| TIMKEN74550 / 74850WTapered roller bearing |
| 382 kN | 614 kN | — | — | 5.99 kg5990 g |
| TIMKEN74550 / 74850XXTapered roller bearing |
| 382 kN | 614 kN | — | — | 6 kg6000 g |
| TIMKEN74550 / 74853Tapered roller bearing |
| 382 kN | 614 kN | — | — | 6.67 kg6670 g |
| TIMKEN74550 / 74856Tapered roller bearing |
| 382 kN | 614 kN | — | — | 6.12 kg6120 g |
| TIMKEN74550-90058Tapered roller bearing |
| 382 kN | 614 kN | — | — | 5.99 kg5990 g |
| TIMKEN74550-90062Tapered roller bearing |
| 382 kN | 614 kN | — | — | 6.16 kg6160 g |
| TIMKEN74550-90116Tapered roller bearing |
| 382 kN | 614 kN | — | — | 5.99 kg5990 g |
| TIMKEN74550-90123Tapered roller bearing |
| 382 kN | 614 kN | — | — | 6.16 kg6160 g |
| TIMKEN74550-90219Tapered roller bearing |
| 665 kN | 1230 kN | — | — | 12.78 kg12780 g |
| TIMKEN74550-90220Tapered roller bearing |
| 665 kN | 1230 kN | — | — | 12.78 kg12780 g |
| TIMKEN74550-90221Tapered roller bearing |
| 665 kN | 1230 kN | — | — | 12.78 kg12780 g |
| TIMKEN74550-90222Tapered roller bearing |
| 665 kN | 1230 kN | — | — | 12.78 kg12780 g |
| TIMKEN74550-90224Tapered roller bearing |
| 665 kN | 1230 kN | — | — | 12.7 kg12700 g |
| TIMKEN74550-90225Tapered roller bearing |
| 665 kN | 1230 kN | — | — | 12.7 kg12700 g |
| TIMKEN74550-90226Tapered roller bearing |
| 665 kN | 1230 kN | — | — | 12.7 kg12700 g |
| TIMKEN74550-90227Tapered roller bearing |
| 665 kN | 1230 kN | — | — | 12.78 kg12780 g |
| TIMKEN74550-90228Tapered roller bearing |
| 665 kN | 1230 kN | — | — | 12.78 kg12780 g |
| TIMKEN74550-90230Tapered roller bearing |
| 665 kN | 1230 kN | — | — | 12.78 kg12780 g |
| TIMKEN74550-90266Tapered roller bearing |
| 665 kN | 1230 kN | — | — | 12.78 kg12780 g |
| TIMKEN74550-90269Tapered roller bearing |
| 665 kN | 1230 kN | — | — | 12.78 kg12780 g |
| TIMKEN74550-90270Tapered roller bearing |
| 665 kN | 1230 kN | — | — | 12.78 kg12780 g |
| TIMKEN74550-90278Tapered roller bearing |
| 665 kN | 1230 kN | — | — | 12.78 kg12780 g |
| TIMKEN74550-902A9Tapered roller bearing |
| 665 kN | 1230 kN | — | — | 12.78 kg12780 g |
| TIMKEN74550-902B3Tapered roller bearing |
| 665 kN | 1230 kN | — | — | 12.78 kg12780 g |
| TIMKEN74550-906B4Tapered roller bearing |
| 382 kN | 614 kN | — | — | 6.16 kg6160 g |
| TIMKEN74550A / 74845Tapered roller bearing |
| 382 kN | 614 kN | — | — | 5.87 kg5870 g |
| TIMKEN74550A / 74846XTapered roller bearing |
| 382 kN | 614 kN | — | — | 5.89 kg5890 g |
| TIMKEN74550A / 74850Tapered roller bearing |
| 382 kN | 614 kN | — | — | 5.97 kg5970 g |
| TIMKEN74550A / 74850WTapered roller bearing |
| 382 kN | 614 kN | — | — | 5.97 kg5970 g |
| TIMKEN74550A / 74850XXTapered roller bearing |
| 382 kN | 614 kN | — | — | 5.98 kg5980 g |
| TIMKEN74550A / 74853Tapered roller bearing |
| 382 kN | 614 kN | — | — | 6.65 kg6650 g |
| TIMKEN74550A / 74856Tapered roller bearing |
| 382 kN | 614 kN | — | — | 6.1 kg6100 g |
| TIMKEN74550A-90231Tapered roller bearing |
| 665 kN | 1230 kN | — | — | 12.74 kg12740 g |
| TIMKEN74550A-90232Tapered roller bearing |
| 665 kN | 1230 kN | — | — | 12.74 kg12740 g |
| TIMKEN74550A-902A1Tapered roller bearing |
| 665 kN | 1230 kN | — | — | 12.74 kg12740 g |
| TIMKEN74550A-902B5Tapered roller bearing |
| 665 kN | 1230 kN | — | — | 12.74 kg12740 g |
| TIMKEN74550A-902B6Tapered roller bearing |
| 665 kN | 1230 kN | — | — | 12.74 kg12740 g |
| TIMKEN74550P-99401Tapered roller bearing |
| 453 kN | 614 kN | — | — | 5.98 kg5980 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 |
|---|---|---|---|---|---|---|
| TIMKEN 74550 / 74845 | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| TIMKEN 74550 / 74846X | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| TIMKEN 74550 / 74850 | Open | ABMA Class 4 | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 74550 / 74850W | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| TIMKEN 74550 / 74850XX | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| TIMKEN 74550 / 74853 | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| TIMKEN 74550 / 74856 | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| TIMKEN 74550-90058 | Open | ABMA Class 0 | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 74550-90062 | Open | ABMA Class 0 | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 74550-90116 | Open | ABMA Class 0 | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 74550-90123 | Open | ABMA Class 0 | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 74550-90219 | Open | ABMA Class 2 | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 74550-90220 | Open | ABMA Class 2 | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 74550-90221 | Open | ABMA Class 2 | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 74550-90222 | Open | ABMA Class 2 | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 74550-90224 | Open | ABMA Class 2 | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 74550-90225 | Open | ABMA Class 2 | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 74550-90226 | Open | ABMA Class 2 | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 74550-90227 | Open | ABMA Class 3 | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 74550-90228 | Open | ABMA Class 0 | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 74550-90230 | Open | ABMA Class 2 | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 74550-90266 | Open | ABMA Class 2 | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 74550-90269 | Open | ABMA Class 2 | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 74550-90270 | Open | ABMA Class 2 | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 74550-90278 | Open | ABMA Class 0 | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 74550-902A9 | Open | ABMA Class 2 | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 74550-902B3 | Open | ABMA Class 2 | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 74550-906B4 | Open | ABMA Class 00 | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 74550A / 74845 | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| TIMKEN 74550A / 74846X | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| TIMKEN 74550A / 74850 | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| TIMKEN 74550A / 74850W | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| TIMKEN 74550A / 74850XX | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| TIMKEN 74550A / 74853 | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| TIMKEN 74550A / 74856 | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| TIMKEN 74550A-90231 | Open | ABMA Class 2 | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 74550A-90232 | Open | ABMA Class 2 | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 74550A-902A1 | Open | ABMA Class 2 | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 74550A-902B5 | Open | ABMA Class 2 | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 74550A-902B6 | Open | ABMA Class 2 | Not recorded | Steel cage | Not recorded | Not recorded |
| TIMKEN 74550P-99401 | Open | ABMA Class 2 | Not recorded | Steel cage | 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.
TIMKEN
74550 / 74845
Tapered roller bearing
View full technical record →TIMKEN74550 / 74846X
Tapered roller bearing
View full technical record →TIMKEN74550 / 74850
Tapered roller bearing
View full technical record →TIMKEN74550 / 74850W
Tapered roller bearing
View full technical record →TIMKEN74550 / 74850XX
Tapered roller bearing
View full technical record →TIMKEN74550 / 74853
Tapered roller bearing
View full technical record →TIMKEN74550 / 74856
Tapered roller bearing
View full technical record →TIMKEN74550-90058
Tapered roller bearing
View full technical record →TIMKEN74550-90062
Tapered roller bearing
View full technical record →TIMKEN74550-90116
Tapered roller bearing
View full technical record →TIMKEN74550-90123
Tapered roller bearing
View full technical record →TIMKEN74550-90219
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.