C41-560-K30MB bearing: complete specifications & equivalents
The C41-560-K30MB is a ISO 15 radial bearing sized 560 x 920 x 355 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 | 920 mm |
| Width B | 355 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | brass |
| Basic dynamic load rating C | 10400 kN |
| Basic static load rating C0 | 19600 kN |
| Fatigue load limit Pu | 1270 kN |
| Reference speed (thermal) | 380 rpm |
| Limiting speed (mechanical) | 500 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 989000 g |
| Manufacturer designation | C 41/560 K30MB |
| 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 | 22.047 in |
|---|---|
| Outer diameter D | 36.22 in |
| Width B | 13.976 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 180 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) | 12 of 14 |
| Bore above smallest C4100-series size | 460 mm |
Cross references & equivalents
No verified interchange data yet. Send an inquiry and our team will confirm equivalents manually.
How the C41-560-K30MB model number is decoded
C 41/560 K30MB is a CARB toroidal roller bearing to ISO 15: a single row of long, symmetrical barrel-shaped rollers between guide flanges, sized 560×920×355 mm, as listed in SKF catalogue PUB BU/P1 17000 ch. 10.1. In C 41/560 K30MB the 41 dimension series fixes the 920 mm OD and 355 mm width around the 560 mm bore (the bore is written directly after the slash (no bore code)); the suffix K30MB then selects the tapered 1:30 bore for withdrawal (AH) sleeve mounting, machined inner-ring-guided brass cage (MB). The K30MB suffix is a machined two-piece brass cage guided on the inner ring, the standard choice for wide, large-bore CARB sizes where a polymer cage would run beyond its temperature or load limit. Float capacity is a selection criterion: the catalogue lists the permissible axial displacement (s) for the 355 mm wide set; size the free-end housing so thermal growth stays within it, not just inside the overall width. Mounting: mount on the withdrawal (AH) sleeve matched to the 1:30 tapered bore, drive up to the catalogue reduction and lock the nut; never press through the 355 mm roller set, and leave the free-end housing shoulder clear so axial float is unrestricted.
Typical equipment & failure modes
Common applications
- 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
- continuous-caster guide rolls and slab-caster segments under heat growth
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
- PA66 cage (TN9) softening when the sustained temperature passes the polymer limit
- rolling-contact fatigue spalling after the catalogue L10 life is exhausted
- grease churning and overheating when a high-speed thrust position is over-packed
Selection pitfalls — read before you substitute
- At 560 mm bore the 989 kg mass and 355 mm width make seating geometry dominant: sphered-washer seats and oil flow must be verified in place, not just on the drawing.
- Never use C 41/560 K30MB as the locating bearing: it carries no axial load by design — the arrangement needs a separate locating spherical, tapered or angular bearing facing the thrust.
- Tapered-bore K executions mount on adapter sleeves (1:12) and K30 on withdrawal sleeves (1:30) — the 560 mm bore changes the sleeve family, and the drive-up procedure differs accordingly.
- Reference and limiting speeds are different limits: the 380 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 10400/19600 kN ratings belong to this exact execution (C 41/560 K30MB); VE240 vibrating-screen variants and sealed 2CS/2NS variants have their own figures even at the same envelope.
- The 10400/19600 kN ratings and 989000 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
What are the dimensions and ratings of the C 41/560 K30MB?
A C 41/560 K30MB measures 560 mm bore × 920 mm outside diameter × 355 mm width (22.047 × 36.22 × 13.976 in). From SKF catalogue PUB BU/P1 17000: dynamic C 10400 kN, static C0 19600 kN, fatigue limit Pu 1270 kN, reference speed 380 r/min, limiting speed 500 r/min, mass about 989000 g.
Can a CARB bearing like C 41/560 K30MB locate the shaft axially?
No — that is the defining feature. C 41/560 K30MB 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 41/560 K30MB designation read?
C = CARB toroidal family; 41 = dimension series; 560 mm (slash-size) = 560 mm bore (the bore is written directly after the slash (no bore code)); suffix K30MB selects tapered 1:30 bore for withdrawal (AH) sleeve mounting, 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.
What is the difference between V and TN9 CARB executions?
V is the full-complement execution with no cage — more rollers, higher C (10400 kN here) but a lower speed ceiling and no thermal reference speed. TN9 is the glass-fibre PA66 caged execution, faster and quieter at somewhat lower load. C 41/560 K30MB is the tapered 1:30 bore for withdrawal (AH) sleeve mounting, machined inner-ring-guided brass cage (MB).
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.