6217-M bearing: complete specifications & equivalents
The 6217-M is a ISO 15 radial bearing sized 85 x 150 x 28 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 85 mm |
| Outer diameter D | 150 mm |
| Width B | 28 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | brass |
| Basic dynamic load rating C | 87.1 kN |
| Basic static load rating C0 | 64 kN |
| Fatigue load limit Pu | 2.5 kN |
| Reference speed (thermal) | 9000 rpm |
| Limiting speed (mechanical) | 8000 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 2000 g |
| Manufacturer designation | 6217 M |
| 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 & 6200-series range
| Bore d | 3.346 in |
|---|---|
| Outer diameter D | 5.906 in |
| Width B | 1.102 in |
| ISO bore code | 17 |
| Radial section height (D−d)/2 | 32.5 mm |
| Smallest bore in 6200-series | 3 mm |
| Largest outer diameter in 6200-series | 540 mm |
| Width range across 6200-series | 2.5–85 mm |
| Bore position in 6200-series (smallest first) | 26 of 45 |
| Bore above smallest 6200-series size | 82 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 6217-RSR | NSK | full Dimensions and internal design equivalent — standard interchange. | NSK counterpart NSK 6217VV on the same 85×150×28 mm envelope with ratings within 10 % — interchange after checking seal, cage and precision details on both pages. |
| 217 | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 85×150×28 mm envelope as SKF 217, but catalogue C/C0 differ (87.1/64 kN vs 96.8/100 kN) — envelope match only after a load check. |
| 217-ZZ | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 85×150×28 mm envelope as SKF 217-2Z, but catalogue C/C0 differ (87.1/64 kN vs 96.8/100 kN) — envelope match only after a load check. |
| 6217 | SKF | full Dimensions and internal design equivalent — standard interchange. | SKF SKF 6217 (open arrangement) shares the 85×150×28 mm envelope with ratings within 10 % — execution variant of the same size; boundary dimensions interchangeable. |
| 6217-ZZ | SKF | full Dimensions and internal design equivalent — standard interchange. | SKF SKF 6217-2Z (two non-contact shields) shares the 85×150×28 mm envelope with ratings within 10 % — execution variant of the same size; boundary dimensions interchangeable. |
| 6217-2RS | SKF | full Dimensions and internal design equivalent — standard interchange. | SKF SKF 6217-2RS1 (two contact elastomer seals) shares the 85×150×28 mm envelope with ratings within 10 % — execution variant of the same size; boundary dimensions interchangeable. |
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 6217-M model number is decoded
In the 6200-series, the last two digits encode the bore: 6217 carries code 17 = 85 mm (code × 5). The envelope is 85×150×28 mm (3.346×5.906×1.102 in) with a 32.5 mm radial section height, C 87.1 kN, C0 64 kN and Pu 2.5 kN. The open 6217 M carries no shields or seals and relies on application lubrication and external sealing. The M suffix identifies the machined brass cage execution, a separate order number from the pressed-steel version. Limiting speed 8000 r/min, catalogue mass 2000 g.
Typical equipment & failure modes
Common applications
- industrial fans
- compressor drives
- machine tool auxiliaries
- agricultural gearboxes
Known failure patterns
- contamination wear when the open arrangement is used without external seals
- lubricant starvation where no regreasing interval is maintained
- raceway smearing under marginal lubrication at start-up
- electrical pitting in VFD-driven motors without shaft grounding
Selection pitfalls — read before you substitute
- Deep-groove geometry tolerates only minutes of misalignment; if the 150 mm housing bore cannot be aligned, move to a self-aligning bearing rather than shimming 6217-M.
- Fillet radii must clear the 6217-M chamfer so the 28 mm-wide ring seats square; an oversized shaft radius creates point contact on the ring face.
- The M suffix on 6217-M denotes a machined brass cage: it is the choice for high speeds, marginal lubrication and shock/vibration duty, and it is temperature-tolerant where polymer cages are not — the 2000 g quoted mass includes the heavier cage.
- Open 6217-M needs external sealing at the arrangement level; in dusty housings its life depends entirely on those external seals and the regreasing schedule.
- Plan a relubrication interval for 6217-M; run-to-failure on open deep-groove bearings is the dominant early-failure cause.
- Deep-groove geometry tolerates only minutes of misalignment; if the 150 mm housing bore cannot be aligned, move to a self-aligning bearing rather than shimming 6217-M.
Frequently asked questions
What are the dimensions of 6217-M?
The SKF 6217 M measures 85 mm bore × 150 mm OD × 28 mm width (3.346 × 5.906 × 1.102 in), mass about 2000 g. It is open, with no shields or seals.
How does the bore code in 6217 work?
The final two digits of 6217 are bore code 17, multiplied by 5 to give 85 mm.
What load can 6217-M take?
Catalogue values for 6217 M: dynamic C 87.1 kN, static C0 64 kN, fatigue limit Pu 2.5 kN. Use C in life calculation and C0 for static checks at 85 mm bore.
What is the speed rating of 6217-M?
SKF lists a 9000 r/min thermal reference speed and a 8000 r/min mechanical limiting speed for 6217 M; real limits also depend on lubrication and fits.
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.