K-H bearing: complete specifications & equivalents
The K-H is a ISO 15 radial bearing sized 72 x 27 x 41 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 72 mm |
| Outer diameter D | 27 mm |
| Width B | 41 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | polymer (PA66 glass-fibre reinforced) |
| Operating temperature | -40 to +120 °C |
| Mass | 2306000 g |
| Manufacturer designation | K H |
| Standard | ISO 15 |
| Catalog version | SKF PUB BU/P1 17000/1 EN (Oct 2018) |
| Last verified | 2026-09-27 |
Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018)) · extracted 2026-09-27
Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018)); 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 & 1200-series range
| Bore d | 2.835 in |
|---|---|
| Outer diameter D | 1.063 in |
| Width B | 1.614 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | -22.5 mm |
| Smallest bore in 1200-series | 6 mm |
| Largest outer diameter in 1200-series | 230 mm |
| Width range across 1200-series | 6–154 mm |
| Bore position in 1200-series (smallest first) | 21 of 32 |
| Bore above smallest 1200-series size | 66 mm |
Cross references & equivalents
No verified interchange data yet. Send an inquiry and our team will confirm equivalents manually.
How the K-H model number is decoded
The Kxx series is a self-aligning ball bearing family. the final digit of K is the bore in millimetres: K H fits a 72 mm shaft (direct miniature spelling). Envelope 72×27×41 mm (2.835×1.063×1.614 in) with a -22.5 mm radial section height, C undefined kN, C0 undefined kN and Pu undefined kN. The open K H carries no shields or seals and relies on application lubrication and external sealing. The suffix identifies the glass-fibre-reinforced polyamide 66 cage execution. The K suffix marks a 1:12 tapered bore, here supplied with the 2306 adapter sleeve for mounting on a cylindrical 72 mm shaft. Limiting speed undefined r/min, catalogue mass 2306000 g.
Typical equipment & failure modes
Common applications
- agricultural gearboxes
- textile machinery drives
- industrial fans and blowers
- woodworking machinery
Known failure patterns
- lubricant starvation where no regreasing interval is maintained
- contamination wear when the open arrangement is used without adequate external sealing
- incorrect sleeve tightening that leaves the tapered bore loose or over-expanded, changing internal clearance
- adapter-sleeve fretting when the sleeve is not locked against the shaft shoulder
- cage damage from running beyond the limiting speed
- raceway smearing under marginal lubrication at start-up
Selection pitfalls — read before you substitute
- Assign interference to the rotating ring: on a 72 mm rotating shaft use a k5 seat with an H7 housing; reverse the logic if the outer ring rotates.
- At 72 mm bore, C3 clearance is the safe choice when interference fits plus temperature rise consume the CN clearance; a hot tight bearing with no residual clearance fails fast.
- Tighten the adapter sleeve to the SKF-recommended starting clearance, not to feel — an over-tightened sleeve expands the inner ring and removes all internal clearance.
- The suffix on K-H denotes a glass-fibre-reinforced polyamide 66 cage: quiet and light at the undefined r/min limiting speed, but it softens above roughly 120 °C — check the oil temperature in hot drives.
- At 72 mm bore, C3 clearance is the safe choice when interference fits plus temperature rise consume the CN clearance; a hot tight bearing with no residual clearance fails fast.
- The spherical outer raceway lets K-H tolerate shaft deflection, but it does not increase thrust capacity — combined loads still need an angular-contact or deep-groove bearing.
Frequently asked questions
What are the dimensions of K-H?
SKF K H measures 72 mm bore × 27 mm OD × 41 mm width (2.835 × 1.063 × 1.614 in), mass about 2306000 g. It is open, with no shields or seals.
How do I read the K designation?
Miniature self-aligning bearings print the bore as the final digit, so K is a 72 mm bearing; the leading digits give the section family.
What load can K-H take?
Catalogue values for K H: dynamic C undefined kN, static C0 undefined kN, fatigue limit Pu undefined kN. Use C in life calculation and C0 for static checks at 72 mm bore.
What is the speed rating of K-H?
SKF publishes only the undefined r/min limiting speed for this execution; sealed variants have no thermal reference speed because seal and grease life govern.
Reviewed & verified by the MPN Base engineering desk against source catalog SKF PUB BU/P1 17000/1 EN (Oct 2018) on 2026-09-27. Read our editorial & correction policy.