C39-710-KM-OH39-710-HE bearing: complete specifications & equivalents
The C39-710-KM-OH39-710-HE is a ISO 15 radial bearing sized 670 x 950 x 180 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 670 mm |
| Outer diameter D | 950 mm |
| Width B | 180 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | brass |
| Basic dynamic load rating C | 6000 kN |
| Basic static load rating C0 | 12500 kN |
| Fatigue load limit Pu | 780 kN |
| Reference speed (thermal) | 450 rpm |
| Limiting speed (mechanical) | 630 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 520000 g |
| Manufacturer designation | SKF C 39/710 KM + OH 39/710 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 | 26.378 in |
|---|---|
| Outer diameter D | 37.402 in |
| Width B | 7.087 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 140 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) | 45 of 51 |
| Bore above smallest carb-adapter-sleeve size | 645 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 C39-710-KM-OH39-710-HE model number is decoded
Numbering logic: the bearing half C 39/710 KM follows the CARB works numbering (type C, dimension series, 710 mm bore), while OH 39/710 HE identifies the sleeve execution for that bore; the combo C39-710-KM-OH39-710-HE exists in the catalogue so that shaft (670 mm), housing (950 mm) and both components are specified with one order number. OH execution note: OH 39/710 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 670 mm shaft seat during overhauls. With a combined mass of 520.0 kg over the 670×950×180 mm principal plan, the unit replaces a machined shoulder seat — the mass difference against the bare bearing is the sleeve steel, priced into the one order number. Dismounting: release the locknut of OH 39/710 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. Housing side of C39-710-KM-OH39-710-HE is conventional: a 950 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 670 mm shaft.The C39-710-KM-OH39-710-HE unit pairs the 710 mm-bore CARB toroidal roller bearing C 39/710 KM with withdrawal sleeve OH 39/710 HE, so it mounts on a plain cylindrical 670 mm shaft without a precision shoulder.
Typical equipment & failure modes
Common applications
- heavy industrial gearbox layshafts used as the non-locating position
- winder and reel drums in paper and steel strip plants
- paper machine drying cylinders and calender rolls with long, thermally expanding shafts
- paper machine drying cylinders and calender rolls with long, thermally expanding shafts
Known failure patterns
- 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
- 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
- overheating from a preload set at mounting when sleeve travel overshot the catalogue clearance
Selection pitfalls — read before you substitute
- Protect the 670 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 C39-710-KM-OH39-710-HE.
- Protect the 670 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 C39-710-KM-OH39-710-HE.
- Sleeve and bearing are a matched taper pair: never fit sleeve OH 39/710 HE onto a different CARB bearing of the same bore size without verifying the execution letters — seat length and taper contact differ.
- The 6000/12500 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 39/710 KM + OH 39/710 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 C39-710-KM-OH39-710-HE?
The unit is CARB bearing C 39/710 KM on withdrawal sleeve OH 39/710 HE, fitting a 670 mm shaft (26.378 in), housing bore 950 mm, bearing width 180 mm. From SKF catalogue PUB BU/P1 17000: basic dynamic load rating C 6000 kN, C0 12500 kN, fatigue load limit Pu 780 kN, combined mass about 520.0 kg. Reference speed 450 r/min, limiting speed 630 r/min (bearing values).
Why does C39-710-KM-OH39-710-HE list a 670 mm shaft size when the bearing bore is 710 mm?
The sleeve takes up the difference: the withdrawal sleeve OH 39/710 HE has a tapered outside that engages the bearing's 710 mm tapered bore and a cylindrical bore that seats on the 670 mm shaft. The catalogue's principal dimensions describe the mounted result — shaft seat, housing bore and bearing width — not the bearing bore alone.
Is C39-710-KM-OH39-710-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 39/710 KM and the sleeve OH 39/710 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 C39-710-KM-OH39-710-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 C39-710-KM-OH39-710-HE set at mounting?
By driving the adapter sleeve up its conical seat: the sleeve expands on the 670 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.