29318 bearing dimensions & suffix variants
Look up recorded dimensions for designations beginning with 29318. 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.
29318 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.
Catalogue parameters for 29318
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.
NTN 29318 — 17 recorded parameters
Axial spherical roller bearing
Reference: NTN-SNR product catalogue; source snapshot 2026-10-02.
NTN 29318 is a spherical roller thrust bearing: shaft-washer bore d = 90 mm, housing-washer outside diameter D = 155 mm and overall height T = 39 mm.
The 19 mm housing-washer width C is not the complete bearing height. Ca, C0a and Cua are axial ratings, and the listed speed limit assumes oil lubrication; these are not radial-bearing ratings or a grease speed limit.
These values were captured on 2026-10-02. The current source was not substituted for this dated record; unrecorded dimensions and application approvals remain unknown.
Dimensions and properties
| Parameter | Source symbol | Recorded value |
|---|---|---|
| Internal diameter of shaft washer | d | 90 mm |
| Housing washer outer diameter | D | 155 mm |
| Inner diameter housing washer | D1 | 117 mm |
| External diameter shaft washer | d1 | 148.5 mm |
| Thrust bearing height | T | 39 mm |
| Housing washer width | C | 19 mm |
| Mass | Not separately recorded | 3.08 kg |
Performance
| Parameter | Source symbol | Recorded value |
|---|---|---|
| Dynamic axial load rating | Ca | 320 kN |
| Static axial load rating | C0a | 915 kN |
| Limit axial load rating | Cua | 84 kN |
| Oil lubrication limit speed | N lim | 2300 r/min |
| Min operating temperature | Tmin | -40 °C |
| Max operating temperature | Tmax | 200 °C |
Mounting dimensions
| Parameter | Source symbol | Recorded value |
|---|---|---|
| Max shaft & housing fillet radius | ras max | 1.5 mm |
| Min fillet radius | rs | 1.5 mm |
| Max shoulder diameter OR | Da max | 140 mm |
| Min shoulder diameter IR | da min | 120 mm |
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) |
|---|---|---|---|---|---|---|
| NTN29318Axial spherical roller bearing |
| — | — | — | — | 3.08 kg3080 g |
| SKF29318 ESpherical roller thrust bearing with stamped steel cage |
| 400 kN | 1080 kN | 2400 rpm | 4000 rpm | 2.9 kg2900 g |
| FAG29318-E1-XLAxial spherical roller bearing |
| — | — | 2140 rpm | 4650 rpm | 2.68 kg2680 g |
| KOYO29318RAxial spherical roller bearing |
| — | — | — | 2500 rpmLimiting Speeds(Oil Lub.): 2500 min-1 | 3.06 kg3060 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 |
|---|---|---|---|---|---|---|
| NTN 29318 | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded | Not recorded |
| SKF 29318 E | Not recorded | Not recorded | Not recorded | Sheet metal | Not recorded | Not recorded |
| FAG 29318-E1-XL | Not recorded | Not recorded | Not recorded | JP — Sheet metal cage | Not recorded | Not recorded |
| KOYO 29318R | 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.
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.