C2215-K bearing: complete specifications & equivalents
The C2215-K is a ISO 15 radial bearing sized 75 x 130 x 31 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 75 mm |
| Outer diameter D | 130 mm |
| Width B | 31 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 196 kN |
| Basic static load rating C0 | 208 kN |
| Fatigue load limit Pu | 24 kN |
| Reference speed (thermal) | 4800 rpm |
| Limiting speed (mechanical) | 6700 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 1600 g |
| Manufacturer designation | C 2215 K |
| 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 & C2200-series range
| Bore d | 2.953 in |
|---|---|
| Outer diameter D | 5.118 in |
| Width B | 1.22 in |
| ISO bore code | 15 |
| Radial section height (D−d)/2 | 27.5 mm |
| Smallest bore in C2200-series | 30 mm |
| Largest outer diameter in C2200-series | 400 mm |
| Width range across C2200-series | 20–108 mm |
| Bore position in C2200-series (smallest first) | 10 of 21 |
| Bore above smallest C2200-series size | 45 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| C2215 | SKF | full Dimensions and internal design equivalent — standard interchange. | Same 75×130×31 mm ISO 15 envelope and equivalent catalogue C/C0; C 2215 is the cylindrical-bore steel-caged execution of this size — boundary dimensions interchangeable, only mounting and cage execution differ. |
| C2215-V | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 75×130×31 mm envelope, but catalogue C/C0 differ between the 1:12 tapered-bore K steel-caged and cylindrical-bore full-complement V executions (196/208 kN vs 220/240 kN) — envelope match, not a load-rating equivalent. |
| C2215-KV | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 75×130×31 mm envelope, but catalogue C/C0 differ between the 1:12 tapered-bore K steel-caged and 1:12 tapered-bore K full-complement V executions (196/208 kN vs 220/240 kN) — envelope match, not a load-rating equivalent. |
| 22215 | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 75×130×31 mm envelope as the SKF spherical roller bearing SKF 22215 E, but catalogue C/C0 differ (196/208 kN vs 217/240 kN) — and the functions differ: spherical locates axially, CARB floats. Pair them; never swap one-for-one. |
| 22215-EK | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 75×130×31 mm envelope as the SKF spherical roller bearing SKF 22215 EK, but catalogue C/C0 differ (196/208 kN vs 217/240 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 C2215-K model number is decoded
C 2215 K belongs to the CARB family — compact aligning roller bearings: envelope 75×130×31 mm, radial rating 196/208 kN C/C0, and no axial-locating function by design. In C 2215 K the 22 dimension series fixes the 130 mm OD and 31 mm width around the 75 mm bore (code 15 × 5); the suffix K then selects the tapered 1:12 bore for adapter (H) sleeve mounting, pressed steel cage. The K suffix gives a 1:12 tapered 75 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 75×130×31 mm are identical — only the mounting method changes. Selection arithmetic: C 196 kN against C0 208 kN gives a C0/C ratio of 1.06, and the 24 kN fatigue load limit Pu sets the contamination-adjusted life floor. 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
- brass cage pocket wear under marginal lubrication in the large-bore M/MB executions
- 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 75 mm bore the small CARB executions are unusually wide (31 mm) for their 130 mm OD — confirm the housing width before substituting a standard spherical bearing of the same bore.
- Reference and limiting speeds are different limits: the 4,800 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 196/208 kN ratings belong to this exact execution (C 2215 K); VE240 vibrating-screen variants and sealed 2CS/2NS variants have their own figures even at the same envelope.
- Never use C 2215 K 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 75 mm bore changes the sleeve family, and the drive-up procedure differs accordingly.
- The 196/208 kN ratings and 1600 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
How is C 2215 K 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 2215 K?
A C 2215 K measures 75 mm bore × 130 mm outside diameter × 31 mm width (2.953 × 5.118 × 1.22 in). From SKF catalogue PUB BU/P1 17000: dynamic C 196 kN, static C0 208 kN, fatigue limit Pu 24 kN, reference speed 4,800 r/min, limiting speed 6,700 r/min, mass about 1600 g.
Can a CARB bearing like C 2215 K locate the shaft axially?
No — that is the defining feature. C 2215 K 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 2215 K designation read?
C = CARB toroidal family; 22 = dimension series; 15 = 75 mm bore (code 15 × 5); suffix K selects tapered 1:12 bore for adapter (H) sleeve mounting, pressed steel cage. 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.