C2320-K bearing: complete specifications & equivalents
The C2320-K is a ISO 15 radial bearing sized 100 x 215 x 73 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 | 215 mm |
| Width B | 73 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 800 kN |
| Basic static load rating C0 | 880 kN |
| Fatigue load limit Pu | 90 kN |
| Reference speed (thermal) | 2600 rpm |
| Limiting speed (mechanical) | 3600 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 12500 g |
| Manufacturer designation | C 2320 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 & C2300-series range
| Bore d | 3.937 in |
|---|---|
| Outer diameter D | 8.465 in |
| Width B | 2.874 in |
| ISO bore code | 20 |
| Radial section height (D−d)/2 | 57.5 mm |
| Smallest bore in C2300-series | 70 mm |
| Largest outer diameter in C2300-series | 280 mm |
| Width range across C2300-series | 51–93 mm |
| Bore position in C2300-series (smallest first) | 7 of 8 |
| Bore above smallest C2300-series size | 30 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| C2320 | SKF | full Dimensions and internal design equivalent — standard interchange. | Same 100×215×73 mm ISO 15 envelope and equivalent catalogue C/C0; C 2320 is the cylindrical-bore steel-caged execution of this size — boundary dimensions interchangeable, only mounting and cage execution differ. |
| 22320 | SKF | full Dimensions and internal design equivalent — standard interchange. | Envelope-identical (100×215×73 mm) SKF spherical roller bearing SKF 22320 E with ratings within 10 % — not a drop-in substitute: SKF 22320 E locates the shaft axially while the CARB bearing must float; the two are designed to run as a locating/non-locating pair. |
| 22320-EK | SKF | full Dimensions and internal design equivalent — standard interchange. | Envelope-identical (100×215×73 mm) SKF spherical roller bearing SKF 22320 EK with ratings within 10 % — not a drop-in substitute: SKF 22320 EK 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 C2320-K model number is decoded
For long shafts that grow thermally, SKF supplies C 2320 K: the toroidal rollers allow the 100 mm inner ring to displace axially without induced thrust, while still accommodating shaft deflection like a spherical bearing. The designation C 2320 K separates into C (CARB), 23 (dimension series), 20 (100 mm bore) and K (tapered 1:12 bore for adapter (H) sleeve mounting, pressed steel cage); envelope 100×215×73 mm follows the ISO 15 plan. The unsuffixed execution carries a pressed steel window cage — the balanced standard for the 100×215 mm size with 800 kN dynamic and a 2,600 r/min reference speed. The 12500 g mass over the 100×215×73 mm envelope yields about 8.00 kN dynamic per millimetre of bore — the long toroidal rollers give this family its radial capacity density. Open executions accept relubrication — route it through the outer-ring groove on sizes that have one and purge stale grease at service intervals. Grease through the annular groove features where provided; on open executions feed lubricant past the long roller set at assembly, since the 73 mm wide cavity does not fill itself.
Typical equipment & failure modes
Common applications
- 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
- winder and reel drums in paper and steel strip plants
- paper machine drying cylinders and calender rolls with long, thermally expanding shafts
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
- PA66 cage (TN9) softening when the sustained temperature passes the polymer limit
- brinelling of washer raceways from impact or mounting force applied through the rolling elements
- oil starvation at the sliding contact zones of large spherical roller thrust bearings on forced-feed trips
Selection pitfalls — read before you substitute
- At 100 mm bore, shaft expansion is already measurable: calculate the required float inside the 73 mm wide bearing rather than assuming the free-end clearance is "enough" at operating temperature.
- Reference and limiting speeds are different limits: the 2,600 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 800/880 kN ratings belong to this exact execution (C 2320 K); VE240 vibrating-screen variants and sealed 2CS/2NS variants have their own figures even at the same envelope.
- 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 2320 K must float; the two are designed to be used as a pair.
- The 800/880 kN ratings and 12500 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 2320 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 2320 K?
A C 2320 K measures 100 mm bore × 215 mm outside diameter × 73 mm width (3.937 × 8.465 × 2.874 in). From SKF catalogue PUB BU/P1 17000: dynamic C 800 kN, static C0 880 kN, fatigue limit Pu 90 kN, reference speed 2,600 r/min, limiting speed 3,600 r/min, mass about 12500 g.
Can a CARB bearing like C 2320 K locate the shaft axially?
No — that is the defining feature. C 2320 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 2320 K designation read?
C = CARB toroidal family; 23 = dimension series; 20 = 100 mm bore (code 20 × 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.