C4122-V bearing: complete specifications & equivalents
The C4122-V is a ISO 15 radial bearing sized 110 x 180 x 69 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 110 mm |
| Outer diameter D | 180 mm |
| Width B | 69 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | none |
| Basic dynamic load rating C | 670 kN |
| Basic static load rating C0 | 1000 kN |
| Fatigue load limit Pu | 104 kN |
| Limiting speed (mechanical) | 900 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 7100 g |
| Manufacturer designation | C 4122 V |
| 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 | 4.331 in |
|---|---|
| Outer diameter D | 7.087 in |
| Width B | 2.717 in |
| ISO bore code | 22 |
| Radial section height (D−d)/2 | 35 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) | 2 of 14 |
| Bore above smallest C4100-series size | 10 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| C4122-2CS5V-GEM9 | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 110×180×69 mm envelope, but catalogue C/C0 differ between the cylindrical-bore full-complement V and cylindrical-bore sealed full-complement V executions (670/1000 kN vs 500/710 kN) — envelope match, not a load-rating equivalent. |
| 24122 | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 110×180×69 mm envelope as the SKF spherical roller bearing SKF 24122 CC/W33, but catalogue C/C0 differ (670/1000 kN vs 539/750 kN) — and the functions differ: spherical locates axially, CARB floats. Pair them; never swap one-for-one. |
| 24122-CCK30-W33 | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 110×180×69 mm envelope as the SKF spherical roller bearing SKF 24122 CCK30/W33, but catalogue C/C0 differ (670/1000 kN vs 539/750 kN) — and the functions differ: spherical locates axially, CARB floats. Pair them; never swap one-for-one. |
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 C4122-V model number is decoded
The CARB bearing C 4122 V combines the self-aligning behaviour of a spherical roller bearing with the axial freedom of a cylindrical bearing in one 110 mm bore, 180 mm outside diameter, 69 mm wide unit rated 670 kN dynamic. In C 4122 V the 41 dimension series fixes the 180 mm OD and 69 mm width around the 110 mm bore (code 22 × 5); the suffix V then selects the cylindrical bore for direct shaft fitting, full-complement V execution (no cage). The V suffix denotes a full complement: the toroidal rollers fill the 69 mm space without a cage, raising C to 670 kN but cutting the speed ceiling (no reference speed is listed) versus the caged size. Pairing rule: use the CARB bearing opposite one locating spherical or tapered bearing — never at both shaft ends — and check the locating bearing takes 100 % of the thrust, since C 4122 V deliberately carries none. After fitting, confirm the inner ring can be pushed axially by hand through the catalogue displacement range; a ring that will not slide means the position is locked and will preload in service.
Typical equipment & failure modes
Common applications
- continuous-caster guide rolls and slab-caster segments under heat growth
- vibrating screen exciters fitted with the VE240 tolerance execution
- 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
Known failure patterns
- raceway spalling once the catalogue L10 life is exceeded or after sustained overload
- roller skew and cage damage after the bearing is clamped solid between shaft and housing shoulders
- PA66 cage (TN9) softening when the sustained temperature passes the polymer limit
- hard-particle indentation where oil or grease filtration is inadequate
- abrasive paste forming as dust bypasses the housing seals into the open washer set
Selection pitfalls — read before you substitute
- At 110 mm bore, shaft expansion is already measurable: calculate the required float inside the 69 mm wide bearing rather than assuming the free-end clearance is "enough" at operating temperature.
- Reference and limiting speeds are different limits: the catalogue lists no thermal reference speed for this full-complement/sealed execution, the limiting value is the mechanical ceiling; observe the reference under load unless the arrangement calculation says otherwise.
- The quoted 670/1000 kN ratings belong to this exact execution (C 4122 V); VE240 vibrating-screen variants and sealed 2CS/2NS variants have their own figures even at the same envelope.
- Never use C 4122 V 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 110 mm bore changes the sleeve family, and the drive-up procedure differs accordingly.
- The 670/1000 kN ratings and 7100 g mass are SKF catalogue values transcribed from ch. 10.1 of PUB BU/P1 17000 (PDF table page 860); 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
Can a CARB bearing like C 4122 V locate the shaft axially?
No — that is the defining feature. C 4122 V 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 4122 V designation read?
C = CARB toroidal family; 41 = dimension series; 22 = 110 mm bore (code 22 × 5); suffix V selects cylindrical bore for direct shaft fitting, full-complement V execution (no 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 (670 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 4122 V is the cylindrical bore for direct shaft fitting, full-complement V execution (no cage).
How is C 4122 V mounted?
Slide or heat (max 120 °C) the bearing onto the 110 mm seat, give the outer ring a loose housing fit, leave the float travel unobstructed, and never press through the 69 mm roller set.
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.