C4120-V-VE240 bearing: complete specifications & equivalents
The C4120-V-VE240 is a ISO 15 radial bearing sized 100 x 165 x 65 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 100 mm |
| Outer diameter D | 165 mm |
| Width B | 65 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | none |
| Basic dynamic load rating C | 475 kN |
| Basic static load rating C0 | 655 kN |
| Fatigue load limit Pu | 71 kN |
| Limiting speed (mechanical) | 1300 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 5300 g |
| Manufacturer designation | C 4120 V/VE240 |
| 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 | 3.937 in |
|---|---|
| Outer diameter D | 6.496 in |
| Width B | 2.559 in |
| ISO bore code | 20 |
| Radial section height (D−d)/2 | 32.5 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) | 1 of 14 |
| Bore above smallest C4100-series size | 0 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| C4120-2CS5V-GEM9 | SKF | full Dimensions and internal design equivalent — standard interchange. | Same 100×165×65 mm ISO 15 envelope and equivalent catalogue C/C0; C 4120-2CS5V/GEM9 is the cylindrical-bore sealed full-complement V execution of this size — boundary dimensions interchangeable, only mounting and cage execution differ. |
| 24120 | SKF | full Dimensions and internal design equivalent — standard interchange. | Envelope-identical (100×165×65 mm) SKF spherical roller bearing SKF 24120 CC/W33 with ratings within 10 % — not a drop-in substitute: SKF 24120 CC/W33 locates the shaft axially while the CARB bearing must float; the two are designed to run as a locating/non-locating pair. |
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 C4120-V-VE240 model number is decoded
In SKF catalogue PUB BU/P1 17000, C 4120 V/VE240 denotes a toroidal roller bearing whose 65 mm long rollers crown at both ends: the contact accepts angular misalignment while the ring positions float, which is why CARB bearings are specified at the free shaft end. In C 4120 V/VE240 the 41 dimension series fixes the 165 mm OD and 65 mm width around the 100 mm bore (the bore is written directly after the slash (no bore code)); the suffix V/VE240 then selects the cylindrical bore for direct shaft fitting, full-complement V execution (no cage). The open execution relies on the housing seals and lubrication system, fed through groove/hole features on the large sizes. Explorer-class heat treatment and the crowned roller profile keep edge stress down when the 100 mm shaft deflects; no reference speed is listed and the limiting speed is 1,300 r/min. 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 4120 V/VE240 deliberately carries none. Mounting: slide the bearing onto the 100 mm seat or heat it (max 120 °C) and seat it square; never press through the 65 mm roller set, and leave the free-end housing shoulder clear so axial float is unrestricted.
Typical equipment & failure modes
Common applications
- paper machine drying cylinders and calender rolls with long, thermally expanding shafts
- 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
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
- brass cage pocket wear under marginal lubrication in the large-bore M/MB executions
- electrical erosion of raceways on VFD-driven shafts without grounding or insulation
- grease churning and overheating when a high-speed thrust position is over-packed
Selection pitfalls — read before you substitute
- At 100 mm bore, shaft expansion is already measurable: calculate the required float inside the 65 mm wide bearing rather than assuming the free-end clearance is "enough" at operating temperature.
- 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 4120 V/VE240 must float; the two are designed to be used as a pair.
- Never use C 4120 V/VE240 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 100 mm bore changes the sleeve family, and the drive-up procedure differs accordingly.
- The 475/655 kN ratings and 5300 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
What is the difference between V and TN9 CARB executions?
V is the full-complement execution with no cage — more rollers, higher C (475 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 4120 V/VE240 is the cylindrical bore for direct shaft fitting, full-complement V execution (no cage).
How is C 4120 V/VE240 mounted?
Slide or heat (max 120 °C) the bearing onto the 100 mm seat, give the outer ring a loose housing fit, leave the float travel unobstructed, and never press through the 65 mm roller set.
What are the dimensions and ratings of the C 4120 V/VE240?
A C 4120 V/VE240 measures 100 mm bore × 165 mm outside diameter × 65 mm width (3.937 × 6.496 × 2.559 in). From SKF catalogue PUB BU/P1 17000: dynamic C 475 kN, static C0 655 kN, fatigue limit Pu 71 kN, limiting speed 1,300 r/min, no reference speed listed, mass about 5300 g.
Can a CARB bearing like C 4120 V/VE240 locate the shaft axially?
No — that is the defining feature. C 4120 V/VE240 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.
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.