C3044-K-OH3044-H bearing: complete specifications & equivalents
The C3044-K-OH3044-H is a ISO 15 radial bearing sized 200 x 340 x 90 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 200 mm |
| Outer diameter D | 340 mm |
| Width B | 90 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 1320 kN |
| Basic static load rating C0 | 2040 kN |
| Fatigue load limit Pu | 176 kN |
| Reference speed (thermal) | 1600 rpm |
| Limiting speed (mechanical) | 2200 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 37000 g |
| Manufacturer designation | SKF C 3044 K + OH 3044 H |
| 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 | 7.874 in |
|---|---|
| Outer diameter D | 13.386 in |
| Width B | 3.543 in |
| ISO bore code | 44 |
| Radial section height (D−d)/2 | 70 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) | 25 of 51 |
| Bore above smallest carb-adapter-sleeve size | 175 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| C3044 | 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 C3044-K-OH3044-H model number is decoded
Housing side of C3044-K-OH3044-H is conventional: a 340 mm H7 bore takes the CARB outer ring, which is free to slide axially in the housing — the toroidal raceway handles the misalignment and the sleeve side handles the location on the 200 mm shaft.The C3044-K-OH3044-H unit pairs the 220 mm-bore CARB toroidal roller bearing C 3044 K with withdrawal sleeve OH 3044 H, so it mounts on a plain cylindrical 200 mm shaft without a precision shoulder.Numbering logic: the bearing half C 3044 K follows the CARB works numbering (type C, dimension series, 220 mm bore), while OH 3044 H identifies the sleeve execution for that bore; the combo C3044-K-OH3044-H exists in the catalogue so that shaft (200 mm), housing (340 mm) and both components are specified with one order number. Adapter sleeve OH 3044 H: the sleeve sits between bearing and shaft, its tapered OD engaging the bearing's tapered bore and its cylindrical bore slipping over the 200 mm shaft. Driving the sleeve up its cone expands it on the shaft and sets the bearing's internal clearance at mounting. Fatigue floor: Pu 176 kN governs the adjusted-life calculation at contaminated or partial-film conditions, exactly as for the bare C 3044 K bearing — the sleeve execution does not change the L10 arithmetic. Mounting C3044-K-OH3044-H: clean the 200 mm seat, slip on sleeve+bearing as one unit, seat against the housing bore 340 mm H7, then drive the withdrawal sleeve up its cone in small steps, checking radial internal clearance after each step until the catalogue residual clearance for the K bore is reached.
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
- long fan and kiln main shafts where the free end must float without thrust load
Known failure patterns
- fretting corrosion at the shaft-sleeve interface under vibration with an undersized seat
- overheating from a preload set at mounting when sleeve travel overshot the catalogue clearance
- 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
- sleeve creep on the shaft seat when the sleeve was not driven to its marked travel or clearance
Selection pitfalls — read before you substitute
- Do not run C3044-K-OH3044-H 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.
- Never set C3044-K-OH3044-H by locknut torque or "feel": the withdrawal sleeve travel defines the clearance of the 220 mm CARB bearing — measure residual radial clearance during mounting, in steps.
- Do not run C3044-K-OH3044-H 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.
- The 1320/2040 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 3044 K + OH 3044 H 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 C3044-K-OH3044-H?
The unit is CARB bearing C 3044 K on withdrawal sleeve OH 3044 H, fitting a 200 mm shaft (7.874 in), housing bore 340 mm, bearing width 90 mm. From SKF catalogue PUB BU/P1 17000: basic dynamic load rating C 1320 kN, C0 2040 kN, fatigue load limit Pu 176 kN, combined mass about 37.0 kg. Reference speed 1,600 r/min, limiting speed 2,200 r/min (bearing values).
Why does C3044-K-OH3044-H list a 200 mm shaft size when the bearing bore is 220 mm?
The sleeve takes up the difference: the withdrawal sleeve OH 3044 H has a tapered outside that engages the bearing's 220 mm tapered bore and a cylindrical bore that seats on the 200 mm shaft. The catalogue's principal dimensions describe the mounted result — shaft seat, housing bore and bearing width — not the bearing bore alone.
Is C3044-K-OH3044-H 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 3044 K and the sleeve OH 3044 H 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 C3044-K-OH3044-H as one catalogue line keeps bearing and sleeve compatible; if ordering separately, quote both full designations including execution letters.
How is the clearance of C3044-K-OH3044-H set at mounting?
By driving the adapter sleeve up its conical seat: the sleeve expands on the 200 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.