217 bearing: complete specifications & equivalents
The 217 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 | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 96.8 kN |
| Basic static load rating C0 | 100 kN |
| Fatigue load limit Pu | 3.9 kN |
| Reference speed (thermal) | 7500 rpm |
| Limiting speed (mechanical) | 4800 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 1950 g |
| Manufacturer designation | 217 |
| 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 | 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 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) | 12 of 15 |
| Bore above smallest 200-series size | 55 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 6217-RSR | NSK | partial Main dimensions match; tolerances, seals or internal clearance differ. | NSK bearing NSK 6217VV on the same 85×150×28 mm envelope, but catalogue C/C0 differ (96.8/100 kN vs 92.5/62 kN) — envelope interchange only after a load check. |
| 6217-M | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 85×150×28 mm envelope as SKF 6217 M, but catalogue C/C0 differ (96.8/100 kN vs 87.1/64 kN) — envelope match only after a load check. |
| 217-ZZ | SKF | full Dimensions and internal design equivalent — standard interchange. | Same 85×150×28 mm envelope and equivalent catalogue ratings; 217-2Z is the two non-contact shields execution of this size — boundary dimensions interchangeable, only the seal/shield/cage execution differs. |
| 6217 | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | SKF SKF 6217 shares the 85×150×28 mm envelope but catalogue C/C0 differ (96.8/100 kN vs 87.1/64 kN) — envelope match, not a load-rating equivalent. |
| 6217-ZZ | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | SKF SKF 6217-2Z shares the 85×150×28 mm envelope but catalogue C/C0 differ (96.8/100 kN vs 87.1/64 kN) — envelope match, not a load-rating equivalent. |
| 6217-2RS | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | SKF SKF 6217-2RS1 shares the 85×150×28 mm envelope but catalogue C/C0 differ (96.8/100 kN vs 87.1/64 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 217 model number is decoded
217 is a filling-slot (notched-ring) deep-groove bearing in the legacy 200-series: the last two digits encode the bore: 217 carries code 17 = 85 mm (code × 5). The rings carry loading slots that allow extra balls during assembly, which is what gives the 85×150×28 mm envelope its C 96.8 kN and C0 100 kN ratings (Pu 3.9 kN). The open 217 carries no shields or seals and relies on application lubrication and external sealing. Limiting speed 4800 r/min, mass 1950 g. These bearings are built for high purely-radial loads at moderate speeds.
Typical equipment & failure modes
Common applications
- slow heavy gearboxes
- farm machinery and harvesters
- construction equipment drives
- hoists and winch gear trains
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
- edge loading from shaft deflection or housing misalignment
- rolling-contact fatigue spalling once the catalogue L10 life is exceeded
Selection pitfalls — read before you substitute
- Limiting speed is just 4800 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 85×150 mm envelope, which is why 217 reaches C 96.8 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 217, never pass the full radial load across the slot zone during mounting or the ring lip can crack.
- 217 uses the legacy SKF 200/300 numbering (light/heavy filling-slot series), not the modern 6200/6300 spelling; quote 217 exactly when ordering replacements.
- Filling-slot bearings take heavy purely-radial load at moderate speed but little thrust; the 96.8/100 kN ratings assume radial loading — use deep-groove 6xxx where axial load matters.
- 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 217.
Frequently asked questions
What are the dimensions of 217?
Filling-slot bearing 217 measures 85×150×28 mm (3.346×5.906×1.102 in), about 1950 g.
What does the designation 217 mean?
It is the legacy 200/300 filling-slot numbering: series 200 and bore code 17 = 85 mm. Filling-slot bearings predate the 6xxx deep-groove spelling.
What is a filling-slot bearing?
The inner and outer rings each have a loading slot; when aligned, extra balls can be inserted, raising radial rating (C 96.8 kN for 217). The slots also make the rings separable.
Can 217 take axial load?
Very little: the filling slots interrupt the raceway shoulders, so thrust towards the open slot side can unload or jam the balls. Use a standard deep-groove 6xxx bearing for combined loads.
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.