C3088-KMB-OH3088-HE bearing: complete specifications & equivalents
The C3088-KMB-OH3088-HE is a ISO 15 radial bearing sized 410 x 650 x 157 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 410 mm |
| Outer diameter D | 650 mm |
| Width B | 157 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | brass |
| Basic dynamic load rating C | 3750 kN |
| Basic static load rating C0 | 6400 kN |
| Fatigue load limit Pu | 450 kN |
| Reference speed (thermal) | 750 rpm |
| Limiting speed (mechanical) | 1000 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 250000 g |
| Manufacturer designation | SKF C 3088 KMB + OH 3088 HE |
| 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 | 16.142 in |
|---|---|
| Outer diameter D | 25.591 in |
| Width B | 6.181 in |
| ISO bore code | 88 |
| Radial section height (D−d)/2 | 120 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) | 36 of 51 |
| Bore above smallest carb-adapter-sleeve size | 385 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| C3088 | 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 C3088-KMB-OH3088-HE model number is decoded
Dismounting: release the locknut of OH 3088 HE, drive the sleeve back off its cone — never hammer the inner ring; the CARB bearing separates from the shaft with the sleeve and stays serviceable if the raceways are sound. Spare-parts note: order C3088-KMB-OH3088-HE as the unit; a bare C 3088 KMB plus a separately sourced sleeve risks taper mismatch — the catalogue pairing is the guarantee that seat and bore were ground for each other.The C3088-KMB-OH3088-HE unit pairs the 440 mm-bore CARB toroidal roller bearing C 3088 KMB with withdrawal sleeve OH 3088 HE, so it mounts on a plain cylindrical 410 mm shaft without a precision shoulder.On the SKF nameplate, C3088-KMB-OH3088-HE reads as two catalogued components: the CARB bearing C 3088 KMB with its 440 mm tapered (K) bore, and the withdrawal sleeve OH 3088 HE whose seat diameter matches that bore — the sleeve number encodes the bearing bore, never the 410 mm shaft size. OH execution note: OH 3088 HE is a withdrawal-type sleeve — it gives a more defined interference than a locknut adapter and can be removed without heavy hammer work, which at this bearing size protects the 410 mm shaft seat during overhauls. Fatigue floor: Pu 450 kN governs the adjusted-life calculation at contaminated or partial-film conditions, exactly as for the bare C 3088 KMB bearing — the sleeve execution does not change the L10 arithmetic.
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
- continuous-caster guide rolls and slab-caster segments under heat growth
Known failure patterns
- fretting corrosion at the shaft-sleeve interface under vibration with an undersized seat
- sleeve creep on the shaft seat when the sleeve was not driven to its marked travel or clearance
- sleeve creep on the shaft seat when the sleeve was not driven to its marked travel or clearance
- raceway spalling of the CARB bearing after the catalogue L10 life under contaminated lubrication
- overheating from a preload set at mounting when sleeve travel overshot the catalogue clearance
Selection pitfalls — read before you substitute
- Do not re-use a sleeve that shows taper scuffing: a scratched cone changes the travel-to-clearance relationship of the whole C3088-KMB-OH3088-HE unit — replace the sleeve with the bearing.
- Keep the pair complete in stores: storing bearing C 3088 KMB and sleeve OH 3088 HE on different shelves is how taper-mismatch accidents start — store the unit as received under one part number.
- Protect the 410 mm seat: sleeve bore corrosion or seat ovality shows up later as sleeve creep and fretting; inspect and measure the seat at every dismounting of C3088-KMB-OH3088-HE.
- The 3750/6400 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 3088 KMB + OH 3088 HE 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 C3088-KMB-OH3088-HE?
The unit is CARB bearing C 3088 KMB on withdrawal sleeve OH 3088 HE, fitting a 410 mm shaft (16.142 in), housing bore 650 mm, bearing width 157 mm. From SKF catalogue PUB BU/P1 17000: basic dynamic load rating C 3750 kN, C0 6400 kN, fatigue load limit Pu 450 kN, combined mass about 250.0 kg. Reference speed 750 r/min, limiting speed 1,000 r/min (bearing values).
Why does C3088-KMB-OH3088-HE list a 410 mm shaft size when the bearing bore is 440 mm?
The sleeve takes up the difference: the withdrawal sleeve OH 3088 HE has a tapered outside that engages the bearing's 440 mm tapered bore and a cylindrical bore that seats on the 410 mm shaft. The catalogue's principal dimensions describe the mounted result — shaft seat, housing bore and bearing width — not the bearing bore alone.
Is C3088-KMB-OH3088-HE 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 3088 KMB and the sleeve OH 3088 HE 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 C3088-KMB-OH3088-HE as one catalogue line keeps bearing and sleeve compatible; if ordering separately, quote both full designations including execution letters.
How is the clearance of C3088-KMB-OH3088-HE set at mounting?
By driving the adapter sleeve up its conical seat: the sleeve expands on the 410 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.