6009 bearing: complete specifications & equivalents
The 6009 is a ISO 15 radial bearing sized 45 x 75 x 16 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 45 mm |
| Outer diameter D | 75 mm |
| Width B | 16 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN / C3 available |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 22.1 kN |
| Basic static load rating C0 | 14.6 kN |
| Fatigue load limit Pu | 0.64 kN |
| Reference speed (thermal) | 20000 rpm |
| Limiting speed (mechanical) | 12000 rpm |
| Operating temperature | -40 to +150 °C |
| Mass | 240 g |
| Manufacturer designation | SKF 6009 |
| Standard | ISO 15 |
| Catalog version | SKF PUB BU/P1 17000/1 EN (Oct 2018) |
| Last verified | 2026-09-25 |
Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018)) · extracted 2026-09-24
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 & 6000-series range
| Bore d | 1.772 in |
|---|---|
| Outer diameter D | 2.953 in |
| Width B | 0.63 in |
| ISO bore code | 09 |
| Radial section height (D−d)/2 | 15 mm |
| Smallest bore in 6000-series | 4 mm |
| Largest outer diameter in 6000-series | 1150 mm |
| Width range across 6000-series | 4–155 mm |
| Bore position in 6000-series (smallest first) | 16 of 61 |
| Bore above smallest 6000-series size | 41 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 6009 | ISO 15 | full Dimensions and internal design equivalent — standard interchange. | ISO 15 boundary-dimension envelope; standard interchange — confirm clearance class and precision with the supplier. |
| 6009-2RS-NSK | NSK | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 45×75×16 mm envelope per ISO 15; seal variant differs (OPEN vs 2RS) — confirm sealing suits the duty. |
| 6009-NSK | NSK | full Dimensions and internal design equivalent — standard interchange. | Identical ISO 15 envelope, seal and ratings band — standard interchange; re-verify precision class and clearance per supplier. |
| 6009-RSR | NSK | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 45×75×16 mm envelope per ISO 15; seal variant differs (OPEN vs RSR) — confirm sealing suits the duty. |
| 6009-ZZ-NSK | NSK | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 45×75×16 mm envelope per ISO 15; seal variant differs (OPEN vs ZZ) — confirm sealing suits the duty. |
| 6009-2RS-NTN | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 45×75×16 mm envelope per ISO 15; seal variant differs (OPEN vs 2RS) — confirm sealing suits the duty. |
| 6009-NTN | NTN | full Dimensions and internal design equivalent — standard interchange. | Identical ISO 15 envelope, seal and ratings band — standard interchange; re-verify precision class and clearance per supplier. |
| 6009-RSR-NTN | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 45×75×16 mm envelope per ISO 15; seal variant differs (OPEN vs RSR) — confirm sealing suits the duty. |
| 6009-ZZ-NTN | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 45×75×16 mm envelope per ISO 15; seal variant differs (OPEN vs ZZ) — confirm sealing suits the duty. |
| W6009-2RS | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | SKF stainless execution W 6009-2RS1 shares the 45×75×16 mm envelope but rates differently (22.1/14.6 kN vs 18.2/15 kN) — not a load-rating equivalent. |
| W6009-ZZ | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | SKF stainless execution W 6009-2Z shares the 45×75×16 mm envelope but rates differently (22.1/14.6 kN vs 18.2/15 kN) — not a load-rating equivalent. |
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 6009 model number is decoded
6009 is supplied open, without shields or seals, so the arrangement around it must supply and retain the lubricant. Within the extra-light 60xx section (diameter series 0 of ISO 15), multiplying bore code 09 by five gives the 45 mm bore; the 75 mm outside diameter and 16 mm width follow the same boundary-dimension plan. For a rotating inner ring on a 45 mm shaft under normal load, catalogue practice seats it on a k5 shaft fit with an H7 housing bore — confirm against the actual load direction and magnitude before committing. In the SKF catalogue this open execution carries the bare designation; protected variants are ordered separately as -2Z and -2RSH.
Typical equipment & failure modes
Common applications
- fans and blowers
- electric motors
- centrifugal pumps
- small gearboxes
Known failure patterns
- contamination wear from dust and dirt ingress through the open arrangement
- lubricant starvation when no regreasing interval is maintained
- brinelling from static overload or hammering during mounting
- false brinelling from vibration while the shaft is stationary
Selection pitfalls — read before you substitute
- A 45 mm shaft for 6009 should be finished to Ra ≤ 1.6 µm with square seating faces; at this bore a scored or oval journal shows up directly as running noise and early raceway damage.
- Choosing the 60xx extra-light section saves radial space at 45 mm bore, but the trade-off is rating: if the drive sees shock or frequent start-stop cycles, re-check the L10 life against a 6209 before committing to the smaller envelope.
- Storage matters for open bearings: 6009 leaves the factory with rust preventive only, so clean it and apply the service grease at assembly even if the rings look oily from the wrapper.
- Open bearings tolerate the highest speeds in the 6000-series but need a defined regreasing interval; run-to-failure lubrication is the dominant cause of early failure in open 6009 units.
- The housing bore for the 75 mm OD should be round within IT7; an oval bore pinches the outer ring of 6009 and shows up later as two-point loaded raceway wear.
- Grease compatibility is not guaranteed between fills: mixing lithium and polyurea thickeners in a 6000-series position can soften the mixture and leak — clean out the old fill before switching grease types.
- The open 6009 needs external sealing and application-supplied lubrication; in the SKF catalogue the protected variants are separate order numbers 6009-2Z (shields) and 6009-2RSH (contact seals), not suffix-free 6009.
- The 22.1/14.6 kN ratings here are SKF Explorer-class figures from catalogue PUB BU/P1 17000/1 EN (Oct 2018); SKF can revise internal geometry and ratings without changing the designation, so treat the catalogue version and date as part of the specification and re-verify for critical drives.
Frequently asked questions
What are the dimensions of a 6009 bearing?
A 6009 deep-groove ball bearing has a 45 mm bore, 75 mm outer diameter and 16 mm width (1.772 × 2.953 × 0.63 in), per ISO 15 boundary dimensions. It is an open bearing with no seals or shields.
What lubrication does 6009 need?
The open 6009 is lubricated by the application; a NLGI 2 lithium-soap grease filled to roughly 25–35% of the free volume is the common choice, with a defined relubrication interval.
How does the 6009 bore code work?
The last two digits of 6009 are bore code 09, giving 09 × 5 = 45 mm bore. The 75 mm outside diameter and 16 mm width follow the ISO 15 diameter series, not the bore code alone.
What does no suffix on 6009 mean?
A bare 6009 designation means open: no shields or seals, normal CN radial clearance and P0 normal tolerance unless further suffixes are ordered. The application must supply and retain the lubrication.
What is the SKF designation and catalogue data for 6009?
In the SKF Rolling Bearings catalogue this size is listed as 6009 — the open (unsealed) execution, 45×75×16 mm per ISO 15. Quoted values: C 22.1 kN, C0 14.6 kN, Pu 0.64 kN, limiting speed 12000 r/min, mass 240 g. Brand suffixes (2Z, 2RSH, 2RSL) differ from the industry-neutral spelling 6009.
Reviewed & verified by the MPN Base engineering desk against source catalog SKF PUB BU/P1 17000/1 EN (Oct 2018) on 2026-09-25. Read our editorial & correction policy.