C3064-KM-OH3064-H bearing: complete specifications & equivalents
The C3064-KM-OH3064-H is a ISO 15 radial bearing sized 300 x 480 x 121 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 300 mm |
| Outer diameter D | 480 mm |
| Width B | 121 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | brass |
| Basic dynamic load rating C | 2280 kN |
| Basic static load rating C0 | 4000 kN |
| Fatigue load limit Pu | 305 kN |
| Reference speed (thermal) | 1000 rpm |
| Limiting speed (mechanical) | 1400 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 95000 g |
| Manufacturer designation | SKF C 3064 KM + OH 3064 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 | 11.811 in |
|---|---|
| Outer diameter D | 18.898 in |
| Width B | 4.764 in |
| ISO bore code | 64 |
| Radial section height (D−d)/2 | 90 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) | 30 of 51 |
| Bore above smallest carb-adapter-sleeve size | 275 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| C3064 | 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 C3064-KM-OH3064-H model number is decoded
Ordering C3064-KM-OH3064-H buys one matched assembly — CARB bearing C 3064 KM on withdrawal sleeve OH 3064 H — rather than a bearing and a sleeve ordered separately for a 300 mm shaft.Digit by digit, C3064-KM-OH3064-H = CARB bearing C 3064 KM (320 mm bore, 480 mm OD, 121 mm width) + withdrawal sleeve OH 3064 H for the 300 mm cylindrical shaft seat; cage and tolerance letters stay with the bearing half of the designation. Adapter sleeve OH 3064 H: the sleeve sits between bearing and shaft, its tapered OD engaging the bearing's tapered bore and its cylindrical bore slipping over the 300 mm shaft. Driving the sleeve up its cone expands it on the shaft and sets the bearing's internal clearance at mounting. Selection arithmetic: the unit carries the ratings of its bearing — C 2280 kN, C0 4000 kN, Pu 305 kN from the CARB table — because the sleeve adds no capacity, only the mounting interface on the 300 mm shaft. Mounting C3064-KM-OH3064-H: clean the 300 mm seat, slip on sleeve+bearing as one unit, seat against the housing bore 480 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. Spare-parts note: order C3064-KM-OH3064-H as the unit; a bare C 3064 KM plus a separately sourced sleeve risks taper mismatch — the catalogue pairing is the guarantee that seat and bore were ground for each other.
Typical equipment & failure modes
Common applications
- paper machine drying cylinders and calender rolls with long, thermally expanding shafts
- continuous-caster guide rolls and slab-caster segments under heat growth
- vibrating screen exciters fitted with the VE240 tolerance execution
- paper machine drying cylinders and calender rolls with long, thermally expanding shafts
Known failure patterns
- misalignment edge loading when the housing bore is out of square with the shaft seat
- overheating from a preload set at mounting when sleeve travel overshot the catalogue clearance
- 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
- sleeve creep on the shaft seat when the sleeve was not driven to its marked travel or clearance
Selection pitfalls — read before you substitute
- Never set C3064-KM-OH3064-H by locknut torque or "feel": the withdrawal sleeve travel defines the clearance of the 320 mm CARB bearing — measure residual radial clearance during mounting, in steps.
- Contamination discipline: the CARB bearing is open (this execution has no seals); flush the housing before mounting C3064-KM-OH3064-H and maintain the lubricant filtration — hard particles indent the toroidal raceway quickly at heavy load.
- Never set C3064-KM-OH3064-H by locknut torque or "feel": the withdrawal sleeve travel defines the clearance of the 320 mm CARB bearing — measure residual radial clearance during mounting, in steps.
- The 2280/4000 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 3064 KM + OH 3064 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 C3064-KM-OH3064-H?
The unit is CARB bearing C 3064 KM on withdrawal sleeve OH 3064 H, fitting a 300 mm shaft (11.811 in), housing bore 480 mm, bearing width 121 mm. From SKF catalogue PUB BU/P1 17000: basic dynamic load rating C 2280 kN, C0 4000 kN, fatigue load limit Pu 305 kN, combined mass about 95.0 kg. Reference speed 1,000 r/min, limiting speed 1,400 r/min (bearing values).
Why does C3064-KM-OH3064-H list a 300 mm shaft size when the bearing bore is 320 mm?
The sleeve takes up the difference: the withdrawal sleeve OH 3064 H has a tapered outside that engages the bearing's 320 mm tapered bore and a cylindrical bore that seats on the 300 mm shaft. The catalogue's principal dimensions describe the mounted result — shaft seat, housing bore and bearing width — not the bearing bore alone.
Is C3064-KM-OH3064-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 3064 KM and the sleeve OH 3064 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 C3064-KM-OH3064-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 C3064-KM-OH3064-H set at mounting?
By driving the adapter sleeve up its conical seat: the sleeve expands on the 300 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.