C2319 bearing: complete specifications & equivalents
The C2319 is a ISO 15 radial bearing sized 95 x 200 x 67 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 95 mm |
| Outer diameter D | 200 mm |
| Width B | 67 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 610 kN |
| Basic static load rating C0 | 695 kN |
| Fatigue load limit Pu | 73.5 kN |
| Reference speed (thermal) | 2800 rpm |
| Limiting speed (mechanical) | 4000 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 10000 g |
| Manufacturer designation | C 2319 |
| 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 | 3.74 in |
|---|---|
| Outer diameter D | 7.874 in |
| Width B | 2.638 in |
| ISO bore code | 19 |
| Radial section height (D−d)/2 | 52.5 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) | 6 of 8 |
| Bore above smallest C2300-series size | 25 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| C2319-K | SKF | full Dimensions and internal design equivalent — standard interchange. | Same 95×200×67 mm ISO 15 envelope and equivalent catalogue C/C0; C 2319 K is the 1:12 tapered-bore K steel-caged execution of this size — boundary dimensions interchangeable, only mounting and cage execution differ. |
| 22319 | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 95×200×67 mm envelope as the SKF spherical roller bearing SKF 22319 E, but catalogue C/C0 differ (610/695 kN vs 699/765 kN) — and the functions differ: spherical locates axially, CARB floats. Pair them; never swap one-for-one. |
| 22319-EK | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 95×200×67 mm envelope as the SKF spherical roller bearing SKF 22319 EK, but catalogue C/C0 differ (610/695 kN vs 699/765 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 C2319 model number is decoded
SKF lists C 2319 in the dimension series 23 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. Reading the code: C marks the CARB toroidal family, the first two digits (23) identify the ISO dimension series and the last two (19) encode the 95 mm bore; suffixes describe bore and execution. The cylindrical 95 mm bore mounts directly on a machined seat; the outer ring takes a loose housing fit so the bearing can float axially. The same size is listed in both bore executions, and the boundary dimensions 95×200×67 mm are identical — only the mounting method changes. Float capacity is a selection criterion: the catalogue lists the permissible axial displacement (s) for the 67 mm wide set; size the free-end housing so thermal growth stays within it, not just inside the overall width. Mounting: slide the bearing onto the 95 mm seat or heat it (max 120 °C) and seat it square; never press through the 67 mm roller set, and leave the free-end housing shoulder clear so axial float is unrestricted.
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
- 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
- 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 95 mm bore, shaft expansion is already measurable: calculate the required float inside the 67 mm wide bearing rather than assuming the free-end clearance is "enough" at operating temperature.
- Envelope-identical spherical roller bearings (same ISO 15 d×D×B) are not drop-in equivalents — they locate the shaft axially, while C 2319 must float; the two are designed to be used as a pair.
- Never use C 2319 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 95 mm bore changes the sleeve family, and the drive-up procedure differs accordingly.
- Reference and limiting speeds are different limits: the 2,800 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 610/695 kN ratings and 10000 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 2319 have?
A C 2319 measures 95 mm bore × 200 mm outside diameter × 67 mm width (3.74 × 7.874 × 2.638 in). From SKF catalogue PUB BU/P1 17000: dynamic C 610 kN, static C0 695 kN, fatigue limit Pu 73.5 kN, reference speed 2,800 r/min, limiting speed 4,000 r/min, mass about 10000 g.
What does C 2319 mean in SKF part numbering?
C marks CARB; 23 the dimension series; the size code gives 95 mm bore; the bare number is the execution (cylindrical bore for direct shaft fitting, pressed steel cage). The envelope follows ISO 15 and matches spherical roller bearing outlines, but the functions differ.
Why is C 2319 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.