292-600-EM bearing: complete specifications & equivalents
The 292-600-EM is a ISO 104 radial bearing sized 600 x 800 x 122 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 600 mm |
| Outer diameter D | 800 mm |
| Width B | 122 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | brass |
| Basic dynamic load rating C | 3740 kN |
| Basic static load rating C0 | 18600 kN |
| Fatigue load limit Pu | 1460 kN |
| Reference speed (thermal) | 450 rpm |
| Limiting speed (mechanical) | 700 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 170000 g |
| Manufacturer designation | 292/600 EM |
| 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 | 23.622 in |
|---|---|
| Outer diameter D | 31.496 in |
| Width B | 4.803 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 100 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) | 21 of 23 |
| Bore above smallest 29200-series size | 450 mm |
Cross references & equivalents
No verified interchange data yet. Send an inquiry and our team will confirm equivalents manually.
How the 292-600-EM model number is decoded
292/600 EM is the classic hook-block and screw-end thrust bearing: 600 mm shaft washer bore, 800 mm OD, minimum axial load factor A 33, and free rotation under load thanks to the spherical geometry. In 292/600 EM, the 292 series fixes the 800 mm OD and 122 mm height — 294 is the heaviest section per bore, 292 the lightest and fastest — and 600 mm (slash-size) selects the 600 mm seat. The machined brass EM cage is matched to size: brass cages tolerate the heaviest, slowest loads and marginal film conditions. The sphered housing washer self-aligns during mounting and under shaft deflection. Static safety matters for shock duty: compare peak axial force against C0 18600 kN with the application's static factor, since crane hooks and screw positions see their worst load at zero or low speed. Large 292 bearings go on with induction heating (max 120 °C) and oil injection features on tapered seats; never strike the machined brass EM cage, and fill the oil bath to the catalogue level before first start.
Typical equipment & failure modes
Common applications
- marine shaft and rudder-style thrust positions with seat deflection
- paper machine calender and refiner discs with combined axial and radial force
- crane hook assemblies where the hook block turns under full load
- injection moulding machine and extruder screw thrust positions
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
- electrical erosion of raceways on VFD-driven shafts without grounding or insulation
- 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 33 here): design the preload or lift sequence explicitly — an unloaded slow rotation glazes the 800 mm washer track.
- the 450 r/min reference speed is the thermal criterion under load, the 700 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 292/600 EM.
- The 3740/18600 kN figures assume the matching sphered seating washer is fitted where the catalogue calls for it; a flat housing seat removes the self-aligning function.
- Minimum load factor A 33 dominates commissioning: start the oil flow and preload before rotation, especially on 292 bearings where an unloaded cold start smears the rollers.
- The 3740/18600 kN ratings and 170000 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
How is a 292/600 EM mounted?
Tight shaft washer on the 600 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 33 preload verified at commissioning.
What are the dimensions and ratings of the 292/600 EM?
A 292/600 EM measures 600 mm bore × 800 mm outside diameter × 122 mm width (23.622 × 31.496 × 4.803 in). From SKF catalogue PUB BU/P1 17000: dynamic C 3740 kN, static C0 18600 kN, fatigue limit Pu 1460 kN, reference speed 450 r/min, limiting speed 700 r/min, mass about 170000 g. Minimum axial load factor A 33 must be maintained in service.
How is the 292/600 EM designation read?
292 is the dimension series (high-speed 292 series) and 600 mm (slash-size) the 600 mm bore (the bore is written directly after the slash (no bore code)); EM is the cage execution (machined brass EM cage). The sphered housing washer provides self-alignment.
Why is the minimum axial load (A 33) so important?
Spherical roller thrust bearings skid and smear immediately when run unloaded — on large sizes factor A 33 corresponds to a substantial force. Springs, oil lift or the rotor/load weight must be applied before rotation, including cold test runs.
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.