C39-630-KM-OH39-630-HE bearing: complete specifications & equivalents
The C39-630-KM-OH39-630-HE is a ISO 15 radial bearing sized 600 x 850 x 165 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 600 mm |
| Outer diameter D | 850 mm |
| Width B | 165 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | brass |
| Basic dynamic load rating C | 4650 kN |
| Basic static load rating C0 | 10000 kN |
| Fatigue load limit Pu | 640 kN |
| Reference speed (thermal) | 530 rpm |
| Limiting speed (mechanical) | 700 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 420000 g |
| Manufacturer designation | SKF C 39/630 KM + OH 39/630 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 | 23.622 in |
|---|---|
| Outer diameter D | 33.465 in |
| Width B | 6.496 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 125 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) | 43 of 51 |
| Bore above smallest carb-adapter-sleeve size | 575 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| C39 | 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 C39-630-KM-OH39-630-HE model number is decoded
Housing side of C39-630-KM-OH39-630-HE is conventional: a 850 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 600 mm shaft.SKF C 39/630 KM + OH 39/630 HE is the SKF catalogue designation for a CARB toroidal roller bearing delivered on a sleeve: bearing C 39/630 KM, withdrawal sleeve OH 39/630 HE, fitting a 600 mm cylindrical shaft seat at 850 mm housing diameter.Reading the designation: C 39/630 KM is the CARB toroidal roller bearing itself — self-aligning, designed as the non-locating bearing that lets the shaft float axially — and the withdrawal sleeve OH 39/630 HE carries the tapered bore seat on a 600 mm cylindrical shaft. The suffix letters on the bearing fix cage and tolerance execution; the sleeve number is keyed to the bearing bore. Adapter sleeve OH 39/630 HE: the sleeve sits between bearing and shaft, its tapered OD engaging the bearing's tapered bore and its cylindrical bore slipping over the 600 mm shaft. Driving the sleeve up its cone expands it on the shaft and sets the bearing's internal clearance at mounting. Speed note: for C39-630-KM-OH39-630-HE the CARB table lists 530 r/min reference and 700 r/min limiting speed the permissible speed of the unit is bounded by the CARB bearing's own catalogue values and by the sleeve-seat interface; sleeve-mounted units run marginally cooler-balanced because the sleeve adds a thermal resistance at the 600 mm seat. Mounting C39-630-KM-OH39-630-HE: clean the 600 mm seat, slip on sleeve+bearing as one unit, seat against the housing bore 850 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
- 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
- winder and reel drums in paper and steel strip plants
- continuous-caster guide rolls and slab-caster segments under heat growth
Known failure patterns
- 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
- fretting corrosion at the shaft-sleeve interface under vibration with an undersized seat
- 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
- Contamination discipline: the CARB bearing is open (this execution has no seals); flush the housing before mounting C39-630-KM-OH39-630-HE and maintain the lubricant filtration — hard particles indent the toroidal raceway quickly at heavy load.
- Protect the 600 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 C39-630-KM-OH39-630-HE.
- Protect the 600 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 C39-630-KM-OH39-630-HE.
- The 4650/10000 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 39/630 KM + OH 39/630 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 C39-630-KM-OH39-630-HE?
The unit is CARB bearing C 39/630 KM on withdrawal sleeve OH 39/630 HE, fitting a 600 mm shaft (23.622 in), housing bore 850 mm, bearing width 165 mm. From SKF catalogue PUB BU/P1 17000: basic dynamic load rating C 4650 kN, C0 10000 kN, fatigue load limit Pu 640 kN, combined mass about 420.0 kg. Reference speed 530 r/min, limiting speed 700 r/min (bearing values).
Why does C39-630-KM-OH39-630-HE list a 600 mm shaft size when the bearing bore is 630 mm?
The sleeve takes up the difference: the withdrawal sleeve OH 39/630 HE has a tapered outside that engages the bearing's 630 mm tapered bore and a cylindrical bore that seats on the 600 mm shaft. The catalogue's principal dimensions describe the mounted result — shaft seat, housing bore and bearing width — not the bearing bore alone.
Is C39-630-KM-OH39-630-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 39/630 KM and the sleeve OH 39/630 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 C39-630-KM-OH39-630-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 C39-630-KM-OH39-630-HE set at mounting?
By driving the adapter sleeve up its conical seat: the sleeve expands on the 600 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.