C2216-K bearing: complete specifications & equivalents
The C2216-K is a ISO 15 radial bearing sized 80 x 140 x 33 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 80 mm |
| Outer diameter D | 140 mm |
| Width B | 33 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 220 kN |
| Basic static load rating C0 | 250 kN |
| Fatigue load limit Pu | 28.5 kN |
| Reference speed (thermal) | 4300 rpm |
| Limiting speed (mechanical) | 6000 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 2050 g |
| Manufacturer designation | C 2216 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 | 3.15 in |
|---|---|
| Outer diameter D | 5.512 in |
| Width B | 1.299 in |
| ISO bore code | 16 |
| Radial section height (D−d)/2 | 30 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) | 11 of 21 |
| Bore above smallest C2200-series size | 50 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| C2216 | SKF | full Dimensions and internal design equivalent — standard interchange. | Same 80×140×33 mm ISO 15 envelope and equivalent catalogue C/C0; C 2216 is the cylindrical-bore steel-caged execution of this size — boundary dimensions interchangeable, only mounting and cage execution differ. |
| C2216-V | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 80×140×33 mm envelope, but catalogue C/C0 differ between the 1:12 tapered-bore K steel-caged and cylindrical-bore full-complement V executions (220/250 kN vs 255/305 kN) — envelope match, not a load-rating equivalent. |
| C2216-KV | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 80×140×33 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 (220/250 kN vs 255/305 kN) — envelope match, not a load-rating equivalent. |
| 22216 | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 80×140×33 mm envelope as the SKF spherical roller bearing SKF 22216 E, but catalogue C/C0 differ (220/250 kN vs 243/270 kN) — and the functions differ: spherical locates axially, CARB floats. Pair them; never swap one-for-one. |
| 22216-EK | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 80×140×33 mm envelope as the SKF spherical roller bearing SKF 22216 EK, but catalogue C/C0 differ (220/250 kN vs 243/270 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 C2216-K model number is decoded
SKF lists C 2216 K in the dimension series 22 CARB toroidal roller bearings: the toroidal roller profile both follows tolerates angular misalignment and lets the inner ring slide axially inside the outer ring, giving free axial displacement at the non-locating position. SKF builds the CARB order number from size plus execution: the bare number C 2216 is the steel-caged cylindrical-bore bearing, K (or K30) makes the bore tapered for sleeve mounting, and the cage/seal letters follow — here K. The unsuffixed execution carries a pressed steel window cage — the balanced standard for the 80×140 mm size with 220 kN dynamic and a 4,300 r/min reference speed. Speed planning separates the 4,300 r/min thermal reference from the 6,000 r/min mechanical limiting speed. The full-complement V executions carry more load but list no thermal reference speed; the steel-caged executions run faster and cooler at light load. 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
- 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
- roller-end and flange smearing after lubricant starvation at the long roller contacts
- 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 80 mm bore the small CARB executions are unusually wide (33 mm) for their 140 mm OD — confirm the housing width before substituting a standard spherical bearing of the same bore.
- Tapered-bore K executions mount on adapter sleeves (1:12) and K30 on withdrawal sleeves (1:30) — the 80 mm bore changes the sleeve family, and the drive-up procedure differs accordingly.
- Reference and limiting speeds are different limits: the 4,300 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 220/250 kN ratings belong to this exact execution (C 2216 K); VE240 vibrating-screen variants and sealed 2CS/2NS variants have their own figures even at the same envelope.
- Never use C 2216 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.
- The 220/250 kN ratings and 2050 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 fails first on a misapplied CARB bearing?
Blocking the designed axial float — clamping the free end or locating both shaft ends — turns thermal growth into edge loading and spalls the toroidal raceways. Cage damage and ordinary fatigue follow overload or dry running.
Which dimensions does the C 2216 K have?
A C 2216 K measures 80 mm bore × 140 mm outside diameter × 33 mm width (3.15 × 5.512 × 1.299 in). From SKF catalogue PUB BU/P1 17000: dynamic C 220 kN, static C0 250 kN, fatigue limit Pu 28.5 kN, reference speed 4,300 r/min, limiting speed 6,000 r/min, mass about 2050 g.
What does C 2216 K mean in SKF part numbering?
C marks CARB; 22 the dimension series; the size code gives 80 mm bore; K is the execution (tapered 1:12 bore for adapter (H) sleeve mounting, pressed steel cage). The envelope follows ISO 15 and matches spherical roller bearing outlines, but the functions differ.
Why is C 2216 K used opposite a spherical roller bearing?
The spherical bearing locates the shaft and takes thrust; the CARB bearing at the other end self-aligns but floats, absorbing thermal expansion without inducing axial load. The pair is standard on paper machine drying cylinders and long caster rolls.
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.