212 bearing: complete specifications & equivalents
The 212 is a ISO 15 radial bearing sized 60 x 110 x 22 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 60 mm |
| Outer diameter D | 110 mm |
| Width B | 22 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 56.1 kN |
| Basic static load rating C0 | 50 kN |
| Fatigue load limit Pu | 2.12 kN |
| Reference speed (thermal) | 11000 rpm |
| Limiting speed (mechanical) | 6700 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 850 g |
| Manufacturer designation | 212 |
| 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 & 200-series range
| Bore d | 2.362 in |
|---|---|
| Outer diameter D | 4.331 in |
| Width B | 0.866 in |
| ISO bore code | 12 |
| Radial section height (D−d)/2 | 25 mm |
| Smallest bore in 200-series | 30 mm |
| Largest outer diameter in 200-series | 180 mm |
| Width range across 200-series | 16–34 mm |
| Bore position in 200-series (smallest first) | 7 of 15 |
| Bore above smallest 200-series size | 30 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 6212-RSR | NSK | partial Main dimensions match; tolerances, seals or internal clearance differ. | NSK bearing NSK 6212VV on the same 60×110×22 mm envelope, but catalogue C/C0 differ (56.1/50 kN vs 57.5/36 kN) — envelope interchange only after a load check. |
| 6212-M | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 60×110×22 mm envelope as SKF 6212 M, but catalogue C/C0 differ (56.1/50 kN vs 55.3/36 kN) — envelope match only after a load check. |
| 212-ZZ | SKF | full Dimensions and internal design equivalent — standard interchange. | Same 60×110×22 mm envelope and equivalent catalogue ratings; 212-2Z is the two non-contact shields execution of this size — boundary dimensions interchangeable, only the seal/shield/cage execution differs. |
| 6212 | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | SKF SKF 6212 shares the 60×110×22 mm envelope but catalogue C/C0 differ (56.1/50 kN vs 55.3/36 kN) — envelope match, not a load-rating equivalent. |
| 6212-ZZ | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | SKF SKF 6212-2Z shares the 60×110×22 mm envelope but catalogue C/C0 differ (56.1/50 kN vs 55.3/36 kN) — envelope match, not a load-rating equivalent. |
| 6212-2RS | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | SKF SKF 6212-2RSH shares the 60×110×22 mm envelope but catalogue C/C0 differ (56.1/50 kN vs 55.3/36 kN) — envelope match, 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 212 model number is decoded
212 is a filling-slot (notched-ring) deep-groove bearing in the legacy 200-series: the last two digits encode the bore: 212 carries code 12 = 60 mm (code × 5). The rings carry loading slots that allow extra balls during assembly, which is what gives the 60×110×22 mm envelope its C 56.1 kN and C0 50 kN ratings (Pu 2.12 kN). The open 212 carries no shields or seals and relies on application lubrication and external sealing. Limiting speed 6700 r/min, mass 850 g. These bearings are built for high purely-radial loads at moderate speeds.
Typical equipment & failure modes
Common applications
- material-handling winches
- slow heavy gearboxes
- farm machinery and harvesters
- construction equipment drives
Known failure patterns
- spalling of the filling-slot edge when balls are hammered through the slot under heavy thrust loading
- dirt entering through the open slot area when external sealing is neglected
- rolling-contact fatigue spalling once the catalogue L10 life is exceeded
- brinelling from static overload or hammer blows during mounting
Selection pitfalls — read before you substitute
- Shields on 212 retain grease but do not seal against water; for wet farm duty add external lip seals rather than trusting the shield.
- Limiting speed is just 6700 r/min: filling-slot cages and the slot geometry run cooler below that — overspeed drives cage wear and smearing.
- Filling slots let more balls be packed into the 60×110 mm envelope, which is why 212 reaches C 56.1 kN — but the slots also mean the two rings separate when the balls align with them, so handle it as a loose-clearance design.
- The slots sit at one angular position: on 212, never pass the full radial load across the slot zone during mounting or the ring lip can crack.
- Shields on 212 retain grease but do not seal against water; for wet farm duty add external lip seals rather than trusting the shield.
- At 60 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.
Frequently asked questions
What are the dimensions of 212?
Filling-slot bearing 212 measures 60×110×22 mm (2.362×4.331×0.866 in), about 850 g.
What does the designation 212 mean?
It is the legacy 200/300 filling-slot numbering: series 200 and bore code 12 = 60 mm. Filling-slot bearings predate the 6xxx deep-groove spelling.
What fails on 212?
Slot-edge chipping under thrust or shock, dirt ingress in the open design and cage wear past the 6700 r/min limiting speed are the typical failure modes.
Is 212 available sealed?
Shielded executions (-2Z, listed here as 212-ZZ) exist; contact-sealed versions are generally not produced for the filling-slot family.
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.