6215-ZZ bearing: complete specifications & equivalents
The 6215-ZZ is a ISO 15 radial bearing sized 75 x 130 x 25 mm (bore x OD x width) with ZZ sealing. Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 75 mm |
| Outer diameter D | 130 mm |
| Width B | 25 mm |
| Material | GCr15 |
| Seal / shield | ZZ |
| Internal clearance | CN / C3 available |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 68.9 kN |
| Basic static load rating C0 | 49 kN |
| Fatigue load limit Pu | 2.04 kN |
| Reference speed (thermal) | 10000 rpm |
| Limiting speed (mechanical) | 5300 rpm |
| Operating temperature | -30 to +120 °C |
| Mass | 1250 g |
| Manufacturer designation | SKF 6215-2Z |
| 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 & 6200-series range
| Bore d | 2.953 in |
|---|---|
| Outer diameter D | 5.118 in |
| Width B | 0.984 in |
| ISO bore code | 15 |
| Radial section height (D−d)/2 | 27.5 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) | 24 of 45 |
| Bore above smallest 6200-series size | 72 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 6215 | 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. |
| 6215-2RS-NSK | NSK | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 75×130×25 mm envelope per ISO 15; seal variant differs (ZZ vs 2RS) — confirm sealing suits the duty. |
| 6215-NSK | NSK | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 75×130×25 mm envelope per ISO 15; seal variant differs (ZZ vs OPEN) — confirm sealing suits the duty. |
| 6215-RSR | NSK | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 75×130×25 mm envelope per ISO 15; seal variant differs (ZZ vs RSR) — confirm sealing suits the duty. |
| 6215-ZZ-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. |
| 6215-2RS-NTN | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 75×130×25 mm envelope per ISO 15; seal variant differs (ZZ vs 2RS) — confirm sealing suits the duty. |
| 6215-NTN | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 75×130×25 mm envelope per ISO 15; seal variant differs (ZZ vs OPEN) — confirm sealing suits the duty. |
| 6215-RSR-NTN | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 75×130×25 mm envelope per ISO 15; seal variant differs (ZZ vs RSR) — confirm sealing suits the duty. |
| 6215-ZZ-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. |
| 7215 | SKF | verify Commonly quoted cross reference; confirm against the target catalog before ordering. | — |
| NU215 | SKF | verify Commonly quoted cross reference; confirm against the target catalog before ordering. | — |
| 6215-M | SKF | full Dimensions and internal design equivalent — standard interchange. | SKF 6215 M (machined brass cage, open arrangement) is the same-size execution on the 75×130×25 mm envelope with ratings within 10 % — boundary dimensions interchangeable. |
| 215 | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | SKF 215 shares the 75×130×25 mm envelope but catalogue C/C0 differ — envelope match only after a load check. |
| 215-ZZ | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | SKF 215-2Z shares the 75×130×25 mm envelope but catalogue C/C0 differ — envelope match only after a load check. |
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 6215-ZZ model number is decoded
6215-ZZ carries two non-contact sheet-steel shields that hold the factory grease in and keep coarse debris out; they do not seal against liquids. Within the light 62xx section (diameter series 2 of ISO 15), multiplying bore code 15 by five gives the 75 mm bore; the 130 mm outside diameter and 25 mm width follow the same boundary-dimension plan. For a rotating inner ring on a 75 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 own suffix is 2Z (this page's industry-neutral spelling is -ZZ); catalogue number 6215-2Z.
Typical equipment & failure modes
Common applications
- centrifugal and positive-displacement pumps
- gearboxes and speed reducers
- conveyor drives
- material-handling equipment
Known failure patterns
- fine-particle abrasion when non-contact shields let dust past in dirty duty
- grease aging in the shield-for-life cavity with no relubrication path
- electrical pitting in VFD-driven motors without grounding protection
- raceway smearing under marginal lubrication at start-up
Selection pitfalls — read before you substitute
- Interference on a 75 mm shaft plus running heat consumes radial clearance: where the shaft runs hot or the fit is tight, order 6215 with C3 clearance and re-check the residual value after mounting.
- The 62xx light series is the default general-purpose section at 75 mm bore; before upgrading to a 6315 for extra capacity, confirm the housing accepts a 130 mm OD and 25 mm width — it is not a drop-in swap.
- Do not wash 6215-ZZ in solvent before mounting: the grease inside the shielded cavity is the service fill, and solvent creeping past the shield gap strips it out.
- Shielded 6215-ZZ units are typically greased for life; prying the shields out for regreasing usually bends them and leaves a gap that throws grease in service.
- Grease compatibility is not guaranteed between fills: mixing lithium and polyurea thickeners in a 6200-series position can soften the mixture and leak — clean out the old fill before switching grease types.
- Shaft and housing fillets must clear the bearing chamfer so the 25 mm-wide ring seats square; provide an undercut or withdrawal groove instead of relying on an oversized radius.
- SKF spells the shielded version 6215-2Z (one shield: 6215-Z), not "-ZZ": the suffix language differs by brand even though the ISO envelope is identical, so quote the brand designation when ordering.
- The single-shield execution 6215-Z is a distinct order number in catalogue 17000: it suits open gears or oil-bath arrangements where the unshielded face faces the lubricant, and it is not interchangeable with the double-shield 6215-2Z for high-contamination positions.
- The 68.9/49 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 6215-ZZ bearing?
A 6215-ZZ deep-groove ball bearing has a 75 mm bore, 130 mm outer diameter and 25 mm width (2.953 × 5.118 × 0.984 in), per ISO 15 boundary dimensions. It is fitted with two non-contact metallic shields.
How does the 6200 compare with other series at the same 75 mm bore?
The '2' is the light diameter series: 130×25 mm with a 27.5 mm radial section at 75 mm bore. A 6315 on the same bore is larger and higher-rated; a 6015 is smaller and lower-rated.
Are 6215 bearings from different brands interchangeable?
For boundary dimensions, yes: every brand's 6215 uses the same ISO 15 envelope (75×130×25 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 6215-ZZ have?
Unless a clearance suffix says otherwise, 6215-ZZ 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 6215 and verify the residual clearance after mounting.
What is the SKF designation and catalogue data for 6215-ZZ?
In the SKF Rolling Bearings catalogue this size is listed as 6215-2Z — two non-contact sheet-metal shields, 75×130×25 mm per ISO 15. Quoted values: C 68.9 kN, C0 49 kN, Pu 2.04 kN, limiting speed 5300 r/min, mass 1250 g. Brand suffixes (2Z, 2RSH, 2RSL) differ from the industry-neutral spelling 6215-ZZ.
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.