6012-RSR bearing: complete specifications & equivalents
The 6012-RSR is a ISO 15 radial bearing sized 60 x 95 x 18 mm (bore x OD x width) with RSR sealing. Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 60 mm |
| Outer diameter D | 95 mm |
| Width B | 18 mm |
| Material | GCr15 |
| Seal / shield | RSR |
| Internal clearance | CN / C3 available |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 30.7 kN |
| Basic static load rating C0 | 23.2 kN |
| Fatigue load limit Pu | 0.98 kN |
| Reference speed (thermal) | 15000 rpm |
| Limiting speed (mechanical) | 7500 rpm |
| Operating temperature | -30 to +120 °C |
| Mass | 430 g |
| Manufacturer designation | SKF 6012-2RZ |
| 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 | 2.362 in |
|---|---|
| Outer diameter D | 3.74 in |
| Width B | 0.709 in |
| ISO bore code | 12 |
| Radial section height (D−d)/2 | 17.5 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) | 19 of 61 |
| Bore above smallest 6000-series size | 56 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 6012 | ISO 15 | verify Commonly quoted cross reference; confirm against the target catalog before ordering. | ISO 15 boundary-dimension envelope; seal suffix convention varies by brand (2RS / DDU / LLU / 2RSR) — verify seal design and temperature range before substituting. |
| 6012-2RS-NSK | NSK | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 60×95×18 mm envelope per ISO 15; seal variant differs (RSR vs 2RS) — confirm sealing suits the duty. |
| 6012-NSK | NSK | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 60×95×18 mm envelope per ISO 15; seal variant differs (RSR vs OPEN) — confirm sealing suits the duty. |
| 6012-RSR-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. |
| 6012-ZZ-NSK | NSK | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 60×95×18 mm envelope per ISO 15; seal variant differs (RSR vs ZZ) — confirm sealing suits the duty. |
| 6012-2RS-NTN | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 60×95×18 mm envelope per ISO 15; seal variant differs (RSR vs 2RS) — confirm sealing suits the duty. |
| 6012-NTN | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 60×95×18 mm envelope per ISO 15; seal variant differs (RSR vs OPEN) — confirm sealing suits the duty. |
| 6012-RSR-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. |
| 6012-ZZ-NTN | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 60×95×18 mm envelope per ISO 15; seal variant differs (RSR vs ZZ) — confirm sealing suits the duty. |
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 6012-RSR model number is decoded
6012-RSR uses two non-contact elastomer lips with very low drag; coarse debris stays out, but the bearing is not liquid-tight. Within the extra-light 60xx section (diameter series 0 of ISO 15), multiplying bore code 12 by five gives the 60 mm bore; the 95 mm outside diameter and 18 mm width follow the same boundary-dimension plan. For a rotating inner ring on a 60 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. SKF's low-friction seal suffix is 2RSL/2RZ (this page's industry-neutral spelling is -RSR); catalogue number 6012-2RZ.
Typical equipment & failure modes
Common applications
- industrial electric motors
- centrifugal and positive-displacement pumps
- gearboxes and speed reducers
- conveyor drives
Known failure patterns
- ingress of fine dust or moisture past the non-contact lip in dirty or wet duty (RSR is not liquid-tight)
- lip-lubricant starvation if the bearing runs dry for extended periods
- rolling-contact fatigue spalling after the rated L10 life is exceeded
- brinelling from static overload or hammering during mounting
Selection pitfalls — read before you substitute
- Temperature rise and interference fits consume internal clearance on this 60 mm bore: a CN bearing on a tight, hot shaft can lose all residual clearance — size 6012 with C3 for those conditions.
- The 60xx extra-light section at 60 mm bore uses a smaller 95 mm OD than a 6212; load ratings are lower, so do not replace a failed 62-series bearing with a 60-series without re-rating the load.
- RSR low-friction seals on 6012-RSR run faster than contact-seal 6012-2RS but let fine dust and moisture past the non-contact lip; in dirty or wet duty specify 6012-2RS instead.
- The non-contact lip of 6012-RSR does not retain a lifetime grease fill the way a contact seal does; confirm the regreasing interval for the 60 mm bore position before relying on it as sealed-for-life.
- Axial location must clamp the ring face, not the seal area: a shoulder or circlip bearing on the seal side of the 18 mm-wide ring of 6012-RSR drags the lip and overheats it.
- Do not quieten a noisy bearing by preloading it: the 6000-series is a deep-groove design, not angular-contact; axial preload raises temperature and shortens grease life.
- SKF catalogues the low-friction seal as 6012-2RZ (suffix -2RSL or -2RZ): a non-contact elastomer lip that runs near the open 7500 r/min limiting speed, closer to the open bearing's 15000 r/min reference than the contact-seal version. It keeps coarse debris out without the drag of a contact seal, but is not liquid-tight — use 2RSH for wet or fine-dust positions.
- The 30.7/23.2 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 6012-RSR bearing?
A 6012-RSR deep-groove ball bearing has a 60 mm bore, 95 mm outer diameter and 18 mm width (2.362 × 3.74 × 0.709 in), per ISO 15 boundary dimensions. It is fitted with two low-friction non-contact rubber seals.
How does the 6000 compare with other series at the same 60 mm bore?
The second digit is the diameter series: 60 is the smallest standard section (95×18 mm, 17.5 mm radial section) at 60 mm bore — below 62/63/64 in load capacity, for light loads in compact spaces.
Are 6012 bearings from different brands interchangeable?
For boundary dimensions, yes: every brand's 6012 uses the same ISO 15 envelope (60×95×18 mm). Load ratings, limiting speeds, clearance, precision class and sealing design can differ, so verify those in the supplier catalogue when substituting. Seal suffixes also differ by brand (2RS, DDU, LLU, 2RSL and similar).
What internal clearance does 6012-RSR have?
Unless a clearance suffix says otherwise, 6012-RSR is manufactured to normal (CN) radial internal clearance. Tight fits and hot shafts consume clearance in service — for those conditions order the C3 execution of 6012 and verify the residual clearance after mounting.
What is the SKF designation and catalogue data for 6012-RSR?
In the SKF Rolling Bearings catalogue this size is listed as 6012-2RZ — two low-friction non-contact elastomer seals, 60×95×18 mm per ISO 15. Quoted values: C 30.7 kN, C0 23.2 kN, Pu 0.98 kN, limiting speed 7500 r/min, mass 430 g. Brand suffixes (2Z, 2RSH, 2RSL) differ from the industry-neutral spelling 6012-RSR.
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.