C2215-K-H315-E bearing: complete specifications & equivalents
The C2215-K-H315-E is a ISO 15 radial bearing sized 65 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 | 65 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 | 2300 g |
| Manufacturer designation | SKF C 2215 K + H 315 E |
| Standard | ISO 15 |
| Catalog version | SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 10.2-10.3 CARB on sleeves |
| Last verified | 2026-09-29 |
Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 10.2-10.3 CARB on sleeves) · extracted 2026-09-29
Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 10.2-10.3 CARB on sleeves); 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 & carb-adapter-sleeve range
| Bore d | 2.559 in |
|---|---|
| Outer diameter D | 5.118 in |
| Width B | 1.22 in |
| ISO bore code | 15 |
| Radial section height (D−d)/2 | 32.5 mm |
| Smallest bore in carb-adapter-sleeve | 25 mm |
| Largest outer diameter in carb-adapter-sleeve | 1580 mm |
| Width range across carb-adapter-sleeve | 20–462 mm |
| Bore position in carb-adapter-sleeve (smallest first) | 9 of 51 |
| Bore above smallest carb-adapter-sleeve size | 40 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| C2215 | ISO 15 | full Dimensions and internal design equivalent — standard interchange. | ISO 15 boundary-dimension envelope; brand-specific OEM equivalents (NSK/FAG/NTN) pending multi-source data. |
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-H315-E model number is decoded
Fatigue floor: Pu 24 kN governs the adjusted-life calculation at contaminated or partial-film conditions, exactly as for the bare C 2215 K bearing — the sleeve execution does not change the L10 arithmetic. The locknut torque of H 315 E sets the sleeve travel; use the SKF procedure (measure clearance reduction, not torque feel) — over-driving the sleeve preloads the 75 mm CARB bearing and overheats the unit within hours. Spare-parts note: order C2215-K-H315-E as the unit; a bare C 2215 K plus a separately sourced sleeve risks taper mismatch — the catalogue pairing is the guarantee that seat and bore were ground for each other.In SKF catalogue PUB BU/P1 17000, C2215-K-H315-E appears as bearing C 2215 K + adapter sleeve H 315 E: the non-locating CARB principle combined with a tapered-bore sleeve seat for a 65 mm shaft.On the SKF nameplate, C2215-K-H315-E reads as two catalogued components: the CARB bearing C 2215 K with its 75 mm tapered (K) bore, and the adapter sleeve H 315 E whose seat diameter matches that bore — the sleeve number encodes the bearing bore, never the 65 mm shaft size. Sleeve discipline: H 315 E and bearing C 2215 K are ground as a matched taper pair — the sleeve's seat diameter and the bearing's bore taper are manufactured together, which is why the catalogue lists the combination as one order number (C2215-K-H315-E).
Typical equipment & failure modes
Common applications
- winder and reel drums in paper and steel strip plants
- paper machine drying cylinders and calender rolls with long, thermally expanding shafts
- continuous-caster guide rolls and slab-caster segments under heat growth
- winder and reel drums in paper and steel strip plants
Known failure patterns
- overheating from a preload set at mounting when sleeve travel overshot the catalogue clearance
- fretting corrosion at the shaft-sleeve interface under vibration with an undersized seat
- fretting corrosion at the shaft-sleeve interface under vibration with an undersized seat
- raceway spalling of the CARB bearing after the catalogue L10 life under contaminated lubrication
- misalignment edge loading when the housing bore is out of square with the shaft seat
Selection pitfalls — read before you substitute
- Keep the pair complete in stores: storing bearing C 2215 K and sleeve H 315 E on different shelves is how taper-mismatch accidents start — store the unit as received under one part number.
- Do not run C2215-K-H315-E as a locating bearing: the CARB raceway is toroidal and the unit is designed to float axially; blocking it against a shoulder preloads the rollers and ends in thermal failure.
- Sleeve and bearing are a matched taper pair: never fit sleeve H 315 E onto a different CARB bearing of the same bore size without verifying the execution letters — seat length and taper contact differ.
- The 196/208 kN ratings are SKF catalogue 17000 values for the CARB bearing; SKF can revise internal geometry without changing the order number, so keep the catalogue version (PUB BU/P1 17000/1 EN, 2018) with the specification.
- Quote the full unit designation SKF C 2215 K + H 315 E when purchasing — bearing and sleeve execution letters are part of the order number and define the matched taper pair.
Frequently asked questions
What are the dimensions and catalogue data of C2215-K-H315-E?
The unit is CARB bearing C 2215 K on adapter sleeve H 315 E, fitting a 65 mm shaft (2.559 in), housing bore 130 mm, bearing width 31 mm. From SKF catalogue PUB BU/P1 17000: basic dynamic load rating C 196 kN, C0 208 kN, fatigue load limit Pu 24 kN, combined mass about 2.3 kg. Reference speed 4,800 r/min, limiting speed 6,700 r/min (bearing values).
Why does C2215-K-H315-E list a 65 mm shaft size when the bearing bore is 75 mm?
The sleeve takes up the difference: the adapter sleeve H 315 E has a tapered outside that engages the bearing's 75 mm tapered bore and a cylindrical bore that seats on the 65 mm shaft. The catalogue's principal dimensions describe the mounted result — shaft seat, housing bore and bearing width — not the bearing bore alone.
Is C2215-K-H315-E a locating or non-locating bearing?
Non-locating. The CARB toroidal roller bearing is designed as the free end of the shaft: its raceway geometry tolerates misalignment and allows axial float, while a separate locating bearing (typically a spherical roller or paired taper) takes the thrust. The sleeve does not change this function.
Can I buy the bearing C 2215 K and the sleeve H 315 E separately?
The components are catalogued separately, but the taper pair is matched — the sleeve seat and the bearing bore are manufactured to the same execution. Ordering the unit C2215-K-H315-E as one catalogue line keeps bearing and sleeve compatible; if ordering separately, quote both full designations including execution letters.
How is the clearance of C2215-K-H315-E set at mounting?
By driving the adapter sleeve up its conical seat: the sleeve expands on the 65 mm shaft and onto the bearing bore, reducing the radial internal clearance. Mount in steps and measure residual clearance until it reaches the catalogue value for the K bore — never set it by nut torque alone.
Reviewed & verified by the MPN Base engineering desk against source catalog SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 10.2-10.3 CARB on sleeves on 2026-09-29. Read our editorial & correction policy.