C30-560-KM bearing: complete specifications & equivalents
The C30-560-KM is a ISO 15 radial bearing sized 560 x 820 x 195 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 | 820 mm |
| Width B | 195 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | brass |
| Basic dynamic load rating C | 5600 kN |
| Basic static load rating C0 | 11000 kN |
| Fatigue load limit Pu | 720 kN |
| Reference speed (thermal) | 530 rpm |
| Limiting speed (mechanical) | 750 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 350000 g |
| Manufacturer designation | C 30/560 KM |
| 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 & C3000-series range
| Bore d | 22.047 in |
|---|---|
| Outer diameter D | 32.283 in |
| Width B | 7.677 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 130 mm |
| Smallest bore in C3000-series | 120 mm |
| Largest outer diameter in C3000-series | 1420 mm |
| Width range across C3000-series | 46–308 mm |
| Bore position in C3000-series (smallest first) | 23 of 33 |
| Bore above smallest C3000-series size | 440 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| C30-560-M | SKF | full Dimensions and internal design equivalent — standard interchange. | Same 560×820×195 mm ISO 15 envelope and equivalent catalogue C/C0; C 30/560 M is the cylindrical-bore M 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 C30-560-KM model number is decoded
C 30/560 KM is the dimension series 30 CARB toroidal roller bearings member of the CARB range: 560 mm bore, 820 mm OD, 195 mm width, with the asymmetrical-looking toroidal roller set that defines the CARB principle. The designation C 30/560 KM separates into C (CARB), 30 (dimension series), 560 mm (slash-size) (560 mm bore — bore 560 mm is written directly after the slash) and KM (tapered 1:12 bore for adapter (H) sleeve mounting, machined brass M cage); envelope 560×820×195 mm follows the ISO 15 plan. The K suffix gives a 1:12 tapered 560 mm bore, mounted on an adapter (H) sleeve so the bearing can be driven up to the specified clearance. The same size is listed in both bore executions, and the boundary dimensions 560×820×195 mm are identical — only the mounting method changes. The 350000 g mass over the 560×820×195 mm envelope yields about 10.00 kN dynamic per millimetre of bore — the long toroidal rollers give this family its radial capacity density. Mounting: mount on the adapter (H) sleeve matched to the 1:12 tapered bore, drive up to the catalogue reduction and lock the nut; never press through the 195 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
- brass cage pocket wear under marginal lubrication in the large-bore M/MB executions
- 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 350 kg mass and 195 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 30/560 KM 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 530 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 5600/11000 kN ratings belong to this exact execution (C 30/560 KM); VE240 vibrating-screen variants and sealed 2CS/2NS variants have their own figures even at the same envelope.
- The 5600/11000 kN ratings and 350000 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 the C 30/560 KM designation read?
C = CARB toroidal family; 30 = dimension series; 560 mm (slash-size) = 560 mm bore (the bore is written directly after the slash (no bore code)); suffix KM selects tapered 1:12 bore for adapter (H) sleeve mounting, machined brass M cage. 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 (5600 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 30/560 KM is the tapered 1:12 bore for adapter (H) sleeve mounting, machined brass M cage.
How is C 30/560 KM mounted?
The tapered 1:12 bore mounts on an adapter (H) sleeve with a defined drive-up; heat the bearing to max 120 °C when fitting, support full ring faces, and verify axial float afterwards.
What are the dimensions and ratings of the C 30/560 KM?
A C 30/560 KM measures 560 mm bore × 820 mm outside diameter × 195 mm width (22.047 × 32.283 × 7.677 in). From SKF catalogue PUB BU/P1 17000: dynamic C 5600 kN, static C0 11000 kN, fatigue limit Pu 720 kN, reference speed 530 r/min, limiting speed 750 r/min, mass about 350000 g.
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.