292-560 bearing: complete specifications & equivalents
The 292-560 is a ISO 104 radial bearing sized 560 x 750 x 115 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 560 mm |
| Outer diameter D | 750 mm |
| Width B | 115 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 2990 kN |
| Basic static load rating C0 | 16000 kN |
| Fatigue load limit Pu | 1220 kN |
| Reference speed (thermal) | 480 rpm |
| Limiting speed (mechanical) | 800 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 140000 g |
| Manufacturer designation | 292/560 |
| 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 | 22.047 in |
|---|---|
| Outer diameter D | 29.528 in |
| Width B | 4.528 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 95 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) | 20 of 23 |
| Bore above smallest 29200-series size | 410 mm |
Cross references & equivalents
No verified interchange data yet. Send an inquiry and our team will confirm equivalents manually.
How the 292-560 model number is decoded
SKF supplies 292/560 for very heavy one-direction axial load: 2990 kN dynamic and 16000 kN static, with the spherical seat absorbing shaft deflection and some simultaneous radial force. In 292/560, the 292 series fixes the 750 mm OD and 115 mm height — 294 is the heaviest section per bore, 292 the lightest and fastest — and 560 mm (slash-size) selects the 560 mm seat. 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 480 r/min thermal reference from the 800 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 24 here): design the preload or lift sequence explicitly — an unloaded slow rotation glazes the 750 mm washer track.
- the 480 r/min reference speed is the thermal criterion under load, the 800 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 292/560.
- Minimum load factor A 24 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 2990/16000 kN ratings and 140000 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
What are the dimensions and ratings of the 292/560?
A 292/560 measures 560 mm bore × 750 mm outside diameter × 115 mm width (22.047 × 29.528 × 4.528 in). From SKF catalogue PUB BU/P1 17000: dynamic C 2990 kN, static C0 16000 kN, fatigue limit Pu 1220 kN, reference speed 480 r/min, limiting speed 800 r/min, mass about 140000 g. Minimum axial load factor A 24 must be maintained in service.
How is the 292/560 designation read?
292 is the dimension series (high-speed 292 series) and 560 mm (slash-size) the 560 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.
Why is the minimum axial load (A 24) so important?
Spherical roller thrust bearings skid and smear immediately when run unloaded — on large sizes factor A 24 corresponds to a substantial force. Springs, oil lift or the rotor/load weight must be applied before rotation, including cold test runs.
Can the 292/560 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.
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.