C41-600-MB bearing: complete specifications & equivalents
The C41-600-MB is a ISO 15 radial bearing sized 600 x 980 x 375 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 | 980 mm |
| Width B | 375 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | brass |
| Basic dynamic load rating C | 12900 kN |
| Basic static load rating C0 | 23200 kN |
| Fatigue load limit Pu | 1460 kN |
| Reference speed (thermal) | 340 rpm |
| Limiting speed (mechanical) | 450 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 1150000 g |
| Manufacturer designation | C 41/600 MB |
| Standard | ISO 15 |
| Catalog version | SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 10.1 CARB toroidal roller bearings |
| Last verified | 2026-09-27 |
Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 10.1 CARB toroidal roller bearings) · extracted 2026-09-27
Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 10.1 CARB toroidal roller 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 & C4100-series range
| Bore d | 23.622 in |
|---|---|
| Outer diameter D | 38.583 in |
| Width B | 14.764 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 190 mm |
| Smallest bore in C4100-series | 100 mm |
| Largest outer diameter in C4100-series | 1090 mm |
| Width range across C4100-series | 65–412 mm |
| Bore position in C4100-series (smallest first) | 13 of 14 |
| Bore above smallest C4100-series size | 500 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| C41-600-K30MB | SKF | full Dimensions and internal design equivalent — standard interchange. | Same 600×980×375 mm ISO 15 envelope and equivalent catalogue C/C0; C 41/600 K30MB is the 1:30 tapered-bore K30 MB inner-ring-guided brass-caged execution of this size — boundary dimensions interchangeable, only mounting and cage execution differ. |
Interchange levels: full standard interchange · partial verify parameters · verify manual confirmation required. Links resolve to the equivalent model's specification page where available.
How the C41-600-MB model number is decoded
C 41/600 MB is the dimension series 41 CARB toroidal roller bearings member of the CARB range: 600 mm bore, 980 mm OD, 375 mm width, with the asymmetrical-looking toroidal roller set that defines the CARB principle. The designation C 41/600 MB separates into C (CARB), 41 (dimension series), 600 mm (slash-size) (600 mm bore — bore 600 mm is written directly after the slash) and MB (cylindrical bore for direct shaft fitting, machined inner-ring-guided brass cage (MB)); envelope 600×980×375 mm follows the ISO 15 plan. The cylindrical 600 mm bore mounts directly on a machined seat; the outer ring takes a loose housing fit so the bearing can float axially. The same size is listed in both bore executions, and the boundary dimensions 600×980×375 mm are identical — only the mounting method changes. The 1150000 g mass over the 600×980×375 mm envelope yields about 21.50 kN dynamic per millimetre of bore — the long toroidal rollers give this family its radial capacity density. Open executions accept relubrication — route it through the outer-ring groove on sizes that have one and purge stale grease at service intervals. Grease through the annular groove features where provided; on open executions feed lubricant past the long roller set at assembly, since the 375 mm wide cavity does not fill itself.
Typical equipment & failure modes
Common applications
- long fan and kiln main shafts where the free end must float without thrust load
- heavy industrial gearbox layshafts used as the non-locating position
- winder and reel drums in paper and steel strip plants
- paper machine drying cylinders and calender rolls with long, thermally expanding shafts
Known failure patterns
- raceway spalling once the catalogue L10 life is exceeded or after sustained overload
- thermal preloading when a shaft is located at both ends and growth has nowhere to go
- brass cage pocket wear under marginal lubrication in the large-bore M/MB executions
- brinelling of washer raceways from impact or mounting force applied through the rolling elements
- oil starvation at the sliding contact zones of large spherical roller thrust bearings on forced-feed trips
Selection pitfalls — read before you substitute
- At 600 mm bore the 1150 kg mass and 375 mm width make seating geometry dominant: sphered-washer seats and oil flow must be verified in place, not just on the drawing.
- Reference and limiting speeds are different limits: the 340 r/min reference speed is the thermal criterion under load, the limiting value is the mechanical ceiling; observe the reference under load unless the arrangement calculation says otherwise.
- The quoted 12900/23200 kN ratings belong to this exact execution (C 41/600 MB); VE240 vibrating-screen variants and sealed 2CS/2NS variants have their own figures even at the same envelope.
- Do not block the axial displacement in the drawing: housing covers, labyrinth rings and snap rings must leave the catalogue float (s) free, or the bearing silently becomes a poorly located fixed bearing.
- Envelope-identical spherical roller bearings (same ISO 15 d×D×B) are not drop-in equivalents — they locate the shaft axially, while C 41/600 MB must float; the two are designed to be used as a pair.
- The 12900/23200 kN ratings and 1150000 g mass are SKF catalogue values transcribed from ch. 10.1 of PUB BU/P1 17000 (PDF table page 866); mounting data — axial displacement (s) and seating details — appears in the running text because the structured record carries the boundary envelope only.
Frequently asked questions
How is C 41/600 MB mounted?
Slide or heat (max 120 °C) the bearing onto the 600 mm seat, give the outer ring a loose housing fit, leave the float travel unobstructed, and never press through the 375 mm roller set.
What are the dimensions and ratings of the C 41/600 MB?
A C 41/600 MB measures 600 mm bore × 980 mm outside diameter × 375 mm width (23.622 × 38.583 × 14.764 in). From SKF catalogue PUB BU/P1 17000: dynamic C 12900 kN, static C0 23200 kN, fatigue limit Pu 1460 kN, reference speed 340 r/min, limiting speed 450 r/min, mass about 1150000 g.
Can a CARB bearing like C 41/600 MB locate the shaft axially?
No — that is the defining feature. C 41/600 MB deliberately allows the inner ring to float axially inside the outer ring while the toroidal rollers self-align. It must be paired with a separate locating bearing (spherical, tapered or angular contact) that takes 100 % of the thrust.
How is the C 41/600 MB designation read?
C = CARB toroidal family; 41 = dimension series; 600 mm (slash-size) = 600 mm bore (the bore is written directly after the slash (no bore code)); suffix MB selects cylindrical bore for direct shaft fitting, machined inner-ring-guided brass cage (MB). K is a 1:12 tapered bore for an adapter sleeve, K30 a 1:30 bore for a withdrawal sleeve.
Reviewed & verified by the MPN Base engineering desk against source catalog SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 10.1 CARB toroidal roller bearings on 2026-09-27. Read our editorial & correction policy.