6319-ZZ bearing: complete specifications & equivalents
The 6319-ZZ is a ISO 15 radial bearing sized 95 x 200 x 45 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 | 95 mm |
| Outer diameter D | 200 mm |
| Width B | 45 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 | 159 kN |
| Basic static load rating C0 | 118 kN |
| Fatigue load limit Pu | 4.15 kN |
| Reference speed (thermal) | 7000 rpm |
| Limiting speed (mechanical) | 3600 rpm |
| Operating temperature | -30 to +120 °C |
| Mass | 5850 g |
| Manufacturer designation | SKF 6319-2Z |
| 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 & 6300-series range
| Bore d | 3.74 in |
|---|---|
| Outer diameter D | 7.874 in |
| Width B | 1.772 in |
| ISO bore code | 19 |
| Radial section height (D−d)/2 | 52.5 mm |
| Smallest bore in 6300-series | 2 mm |
| Largest outer diameter in 6300-series | 500 mm |
| Width range across 6300-series | 3–95 mm |
| Bore position in 6300-series (smallest first) | 26 of 40 |
| Bore above smallest 6300-series size | 93 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 6319 | 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. |
| 6319-2RS-NSK | NSK | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 95×200×45 mm envelope per ISO 15; seal variant differs (ZZ vs 2RS) — confirm sealing suits the duty. |
| 6319-NSK | NSK | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 95×200×45 mm envelope per ISO 15; seal variant differs (ZZ vs OPEN) — confirm sealing suits the duty. |
| 6319-RSR | NSK | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 95×200×45 mm envelope per ISO 15; seal variant differs (ZZ vs RSR) — confirm sealing suits the duty. |
| 6319-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. |
| 6319-2RS-NTN | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 95×200×45 mm envelope per ISO 15; seal variant differs (ZZ vs 2RS) — confirm sealing suits the duty. |
| 6319-NTN | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 95×200×45 mm envelope per ISO 15; seal variant differs (ZZ vs OPEN) — confirm sealing suits the duty. |
| 6319-RSR-NTN | NTN | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 95×200×45 mm envelope per ISO 15; seal variant differs (ZZ vs RSR) — confirm sealing suits the duty. |
| 6319-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. |
| 7319 | SKF | verify Commonly quoted cross reference; confirm against the target catalog before ordering. | — |
| NU319 | SKF | verify Commonly quoted cross reference; confirm against the target catalog before ordering. | — |
| 21319 | SKF | verify Commonly quoted cross reference; confirm against the target catalog before ordering. | — |
| 6319-M | SKF | full Dimensions and internal design equivalent — standard interchange. | SKF 6319 M (machined brass cage, open arrangement) is the same-size execution on the 95×200×45 mm envelope with ratings within 10 % — 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 6319-ZZ model number is decoded
6319-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 medium 63xx section (diameter series 3 of ISO 15), multiplying bore code 19 by five gives the 95 mm bore; the 200 mm outside diameter and 45 mm width follow the same boundary-dimension plan. For a rotating inner ring on a 95 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 6319-2Z.
Typical equipment & failure modes
Common applications
- medium and heavy industrial drives
- large gearboxes
- industrial fans and blowers
- hoists and winches
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
- false brinelling from vibration while the shaft is stationary
- fretting corrosion on a loose shaft seat
Selection pitfalls — read before you substitute
- Mount this 95 mm bore bearing by heating the inner ring (induction heater, max 120 °C) — never drive it home through the outer ring or balls, that brinells the raceways.
- The 63xx medium section at 95 mm bore gains dynamic rating through larger rolling elements on a 200 mm OD; the penalty is mass and a lower limiting speed than the 6219 — do not specify it for speed-critical shafts.
- ZZ shields are non-contact: 6319-ZZ blocks chips and coarse dust but is not waterproof — do not install it expecting a pressure-wash seal, step up to 6319-2RS for that.
- Do not wash 6319-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.
- Never mix components between two 6319-ZZ units: rings, cage and balls are factory-matched and are not field-interchangeable, even between identical designations.
- Do not quieten a noisy bearing by preloading it: the 6300-series is a deep-groove design, not angular-contact; axial preload raises temperature and shortens grease life.
- SKF spells the shielded version 6319-2Z (one shield: 6319-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 6319-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 6319-2Z for high-contamination positions.
- The 159/118 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 6319-ZZ bearing?
A 6319-ZZ deep-groove ball bearing has a 95 mm bore, 200 mm outer diameter and 45 mm width (3.74 × 7.874 × 1.772 in), per ISO 15 boundary dimensions. It is fitted with two non-contact metallic shields.
How does the 6300 compare with other series at the same 95 mm bore?
The '3' is the medium diameter series: 200×45 mm, 52.5 mm radial section at 95 mm bore, carrying more load than a 6219 but needing a larger housing bore and giving up some speed.
Are 6319 bearings from different brands interchangeable?
For boundary dimensions, yes: every brand's 6319 uses the same ISO 15 envelope (95×200×45 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 6319-ZZ have?
Unless a clearance suffix says otherwise, 6319-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 6319 and verify the residual clearance after mounting.
What is the SKF designation and catalogue data for 6319-ZZ?
In the SKF Rolling Bearings catalogue this size is listed as 6319-2Z — two non-contact sheet-metal shields, 95×200×45 mm per ISO 15. Quoted values: C 159 kN, C0 118 kN, Pu 4.15 kN, limiting speed 3600 r/min, mass 5850 g. Brand suffixes (2Z, 2RSH, 2RSL) differ from the industry-neutral spelling 6319-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.