29364-E bearing: complete specifications & equivalents
The 29364-E is a ISO 104 radial bearing sized 320 x 500 x 109 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 320 mm |
| Outer diameter D | 500 mm |
| Width B | 109 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 3350 kN |
| Basic static load rating C0 | 11200 kN |
| Fatigue load limit Pu | 1000 kN |
| Reference speed (thermal) | 750 rpm |
| Limiting speed (mechanical) | 1200 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 78000 g |
| Manufacturer designation | 29364 E |
| Standard | ISO 104 |
| Catalog version | SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 13.1 spherical roller thrust bearings |
| Last verified | 2026-09-27 |
Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 13.1 spherical roller thrust bearings) · extracted 2026-09-27
Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 13.1 spherical roller thrust bearings); SKF® and SKF Explorer® are trademarks of AB SKF, used here for identification only — mpnbase is not an authorized SKF distributor. Boundary dimensions are ISO 15 interchangeable; current production values may differ, verify at skf.com.
Dimensions in inches & 29300-series range
| Bore d | 12.598 in |
|---|---|
| Outer diameter D | 19.685 in |
| Width B | 4.291 in |
| ISO bore code | 64 |
| Radial section height (D−d)/2 | 90 mm |
| Smallest bore in 29300-series | 85 mm |
| Largest outer diameter in 29300-series | 1180 mm |
| Width range across 29300-series | 39–230 mm |
| Bore position in 29300-series (smallest first) | 19 of 31 |
| Bore above smallest 29300-series size | 235 mm |
Cross references & equivalents
No verified interchange data yet. Send an inquiry and our team will confirm equivalents manually.
How the 29364-E model number is decoded
In SKF catalogue PUB BU/P1 17000, 29364 E denotes a self-aligning thrust bearing: the sphered back face of the housing washer follows seat misalignment while the stamped steel E window cage guides the rollers under 109 mm of axial section. Reading the code: 293 gives the dimension series (medium 293 series) and 64 the 320 mm shaft washer bore (code 64 × 5); the E sets the cage design. The stamped steel E window cage is matched to size: the E design is the current standard with a stamped window-type steel cage. The sphered housing washer self-aligns during mounting and under shaft deflection. Selection arithmetic: C 3350 kN against C0 11200 kN gives a C0/C ratio of 3.34 — thrust bearings are chosen on static rating and F_a/C0 more often than on L10 life. Mounting: fit the shaft washer tight on the 320 mm seat, seat the sphered housing washer on its matching (often separately supplied) seating washer, and check the assembly swivels freely before applying the 3350 kN working load.
Typical equipment & failure modes
Common applications
- crane hook assemblies where the hook block turns under full load
- injection moulding machine and extruder screw thrust positions
- vertical hydro generators and large vertical pump motors
- coal mill, cement mill and sugar mill thrust bearings under shock load
Known failure patterns
- roller skidding and raceway glazing once the thrust falls below the catalogue minimum axial load (factor A)
- shaft-washer creep and fretting corrosion on a soft or undersized shaft shoulder
- oil starvation at the sliding contact zones of large spherical roller thrust bearings on forced-feed trips
- hard-particle indentation where oil or grease filtration is inadequate
- smearing at roller-raceway contacts during unloaded startup before the oil film or preload is established
Selection pitfalls — read before you substitute
- Above 300 mm bore the minimum load is large (A 12 here): design the preload or lift sequence explicitly — an unloaded slow rotation glazes the 500 mm washer track.
- Radial force beyond the permitted fraction of simultaneous thrust (about 0.55·F_a) overloads one side of the barrel-roller set — add a radial bearing instead of leaning on 29364 E.
- E, EM and EF suffixes are cage designs for different size bands, not quality grades: substitute only within the same envelope and check the lubricant compatibility of the cage material.
- Minimum load factor A 12 dominates commissioning: start the oil flow and preload before rotation, especially on 293 bearings where an unloaded cold start smears the rollers.
- The spherical seat tolerates static misalignment, not a continuously rocking housing — a loose sphered seat frets under oscillation and needs the catalogue seat tolerances plus clean, greased contact.
- The 3350/11200 kN ratings and 78000 g mass are SKF catalogue values transcribed from ch. 13.1 of PUB BU/P1 17000 (PDF table page 926); mounting data — the minimum axial load factor A — appears in the running text because the structured record carries the boundary envelope only.
Frequently asked questions
What is the difference between 292, 293 and 294 series?
292 is the light, fastest section; 293 the medium; 294 the heaviest with the largest OD per bore and the greatest thrust capacity. 29364 E is the medium 293 series, 320×500×109 mm.
What do E, EM and EF mean on 29364 E?
They are cage designs for different size bands: E is the stamped steel window cage of the current design, EM the machined brass cage for heavy/slow sizes, EF the steel cage for extra-large bearings — not quality grades. This bearing carries the stamped steel E window cage.
Where is the 29364 E typically used?
Crane hook blocks, extruder and injection-moulding screws, vertical hydro generators, large gearbox thrust positions and heavy mill shafts — places with very high one-direction axial load plus shaft deflection.
What destroys a spherical roller thrust bearing?
Unloaded rotation below A 12 (roller smearing), interrupted oil supply on the large sizes, a missing sphered seating washer that removes alignment, and contamination. Limiting speed here is 1,200 r/min.
Reviewed & verified by the MPN Base engineering desk against source catalog SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 13.1 spherical roller thrust bearings on 2026-09-27. Read our editorial & correction policy.