292-500 bearing: complete specifications & equivalents
The 292-500 is a ISO 104 radial bearing sized 500 x 670 x 103 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 500 mm |
| Outer diameter D | 670 mm |
| Width B | 103 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 2390 kN |
| Basic static load rating C0 | 12500 kN |
| Fatigue load limit Pu | 1000 kN |
| Reference speed (thermal) | 560 rpm |
| Limiting speed (mechanical) | 900 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 100000 g |
| Manufacturer designation | 292/500 |
| 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 & 29200-series range
| Bore d | 19.685 in |
|---|---|
| Outer diameter D | 26.378 in |
| Width B | 4.055 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 85 mm |
| Smallest bore in 29200-series | 150 mm |
| Largest outer diameter in 29200-series | 1060 mm |
| Width range across 29200-series | 39–155 mm |
| Bore position in 29200-series (smallest first) | 18 of 23 |
| Bore above smallest 29200-series size | 350 mm |
Cross references & equivalents
No verified interchange data yet. Send an inquiry and our team will confirm equivalents manually.
How the 292-500 model number is decoded
SKF supplies 292/500 for very heavy one-direction axial load: 2390 kN dynamic and 12500 kN static, with the spherical seat absorbing shaft deflection and some simultaneous radial force. The designation 292/500 separates into 292 (series), 500 mm (slash-size) (500 mm bore — bore 500 mm is written directly after the slash) and no suffix (earlier standard design); washers are separable for individual mounting. The contact geometry also accepts simultaneous radial load up to roughly 55 % of the simultaneous axial force; beyond that mix, add a separate radial bearing to the arrangement. Speed planning separates the 560 r/min thermal reference from the 900 r/min mechanical limiting speed. Thrust bearings govern the thermal speed of many vertical arrangements, and oil circulation raises the usable speed substantially above grease values. Large 292 bearings go on with induction heating (max 120 °C) and oil injection features on tapered seats; never strike the steel cage of the earlier standard design, and fill the oil bath to the catalogue level before first start.
Typical equipment & failure modes
Common applications
- 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
- marine shaft and rudder-style thrust positions with seat deflection
Known failure patterns
- cage wear from rollers being dragged through unloaded zones under fluctuating thrust
- washer back-face fretting where the seat is too narrow to support the full ring face
- oil starvation at the sliding contact zones of large spherical roller thrust bearings on forced-feed trips
- brinelling of washer raceways from impact or mounting force applied through the rolling elements
- roller skidding and raceway glazing once the thrust falls below the catalogue minimum axial load (factor A)
Selection pitfalls — read before you substitute
- Above 300 mm bore the minimum load is large (A 15 here): design the preload or lift sequence explicitly — an unloaded slow rotation glazes the 670 mm washer track.
- the 560 r/min reference speed is the thermal criterion under load, the 900 r/min limiting speed is the mechanical ceiling; large 292 bearings are normally run well below it with oil cooling.
- 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 292/500.
- Minimum load factor A 15 dominates commissioning: start the oil flow and preload before rotation, especially on 292 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 2390/12500 kN ratings and 100000 g mass are SKF catalogue values transcribed from ch. 13.1 of PUB BU/P1 17000 (PDF table page 928); 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
Can the 292/500 also carry radial load?
Yes, up to roughly 55 % of the simultaneous axial force, thanks to the steep contact angle of the barrel rollers. Beyond that mix, specify a separate radial bearing; the primary duty remains one-direction thrust.
How is a 292/500 mounted?
Tight shaft washer on the 500 mm seat, sphered housing washer on its matching seating washer, induction heating for large sizes, oil at the catalogue level before start, and the factor-A 15 preload verified at commissioning.
What are the dimensions and ratings of the 292/500?
A 292/500 measures 500 mm bore × 670 mm outside diameter × 103 mm width (19.685 × 26.378 × 4.055 in). From SKF catalogue PUB BU/P1 17000: dynamic C 2390 kN, static C0 12500 kN, fatigue limit Pu 1000 kN, reference speed 560 r/min, limiting speed 900 r/min, mass about 100000 g. Minimum axial load factor A 15 must be maintained in service.
How is the 292/500 designation read?
292 is the dimension series (high-speed 292 series) and 500 mm (slash-size) the 500 mm bore (the bore is written directly after the slash (no bore code)); no suffix is the cage execution (steel cage of the earlier standard design). The sphered housing washer provides self-alignment.
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.