29376 bearing: complete specifications & equivalents
The 29376 is a ISO 104 radial bearing sized 380 x 600 x 132 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 380 mm |
| Outer diameter D | 600 mm |
| Width B | 132 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 3340 kN |
| Basic static load rating C0 | 14000 kN |
| Fatigue load limit Pu | 1160 kN |
| Reference speed (thermal) | 530 rpm |
| Limiting speed (mechanical) | 1000 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 140000 g |
| Manufacturer designation | 29376 |
| 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 | 14.961 in |
|---|---|
| Outer diameter D | 23.622 in |
| Width B | 5.197 in |
| ISO bore code | 76 |
| Radial section height (D−d)/2 | 110 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) | 22 of 31 |
| Bore above smallest 29300-series size | 295 mm |
Cross references & equivalents
No verified interchange data yet. Send an inquiry and our team will confirm equivalents manually.
How the 29376 model number is decoded
The medium 293 series bearing 29376 carries 3340 kN of thrust on barrel rollers whose contact angle also tolerates radial force up to a fraction of the applied thrust — the standard heavy-duty thrust bearing for 380 mm shafts. In 29376, the 293 series fixes the 600 mm OD and 132 mm height — 294 is the heaviest section per bore, 292 the lightest and fastest — and 76 selects the 380 mm seat. A minimum axial load of factor A 19 must be maintained — in the large 293 sizes this is a real force (often supplied by springs, oil pressure or the rotor weight), below it the rollers skid and smear. The 140000 g mass and 132 mm axial height sit between 380 and 600 mm washer diameters; check the seat shoulder spans the full ring face — a narrow shoulder causes washer fretting long before fatigue does. Large 293 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
- coal mill, cement mill and sugar mill thrust bearings under shock load
- 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
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
- abrasive paste forming as dust bypasses the housing seals into the open washer set
- brinelling of washer raceways from impact or mounting force applied through the rolling elements
- 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 19 here): design the preload or lift sequence explicitly — an unloaded slow rotation glazes the 600 mm washer track.
- Minimum load factor A 19 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 530 r/min reference speed is the thermal criterion under load, the 1,000 r/min limiting speed is the mechanical ceiling; large 293 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 29376.
- The 3340/14000 kN ratings and 140000 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
Can the 29376 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 29376 mounted?
Tight shaft washer on the 380 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 19 preload verified at commissioning.
What are the dimensions and ratings of the 29376?
A 29376 measures 380 mm bore × 600 mm outside diameter × 132 mm width (14.961 × 23.622 × 5.197 in). From SKF catalogue PUB BU/P1 17000: dynamic C 3340 kN, static C0 14000 kN, fatigue limit Pu 1160 kN, reference speed 530 r/min, limiting speed 1,000 r/min, mass about 140000 g. Minimum axial load factor A 19 must be maintained in service.
How is the 29376 designation read?
293 is the dimension series (medium 293 series) and 76 the 380 mm bore (code 76 × 5); 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.