619-9-ZZ bearing: complete specifications & equivalents
The 619-9-ZZ is a ISO 15 radial bearing sized 9 x 20 x 6 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 | 9 mm |
| Outer diameter D | 20 mm |
| Width B | 6 mm |
| Material | GCr15 |
| Seal / shield | ZZ |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 2.34 kN |
| Basic static load rating C0 | 0.98 kN |
| Fatigue load limit Pu | 0.043 kN |
| Reference speed (thermal) | 80000 rpm |
| Limiting speed (mechanical) | 40000 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 7.6 g |
| Manufacturer designation | 619/9-2Z |
| 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 & 61900-series range
| Bore d | 0.354 in |
|---|---|
| Outer diameter D | 0.787 in |
| Width B | 0.236 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 5.5 mm |
| Smallest bore in 61900-series | 3 mm |
| Largest outer diameter in 61900-series | 1120 mm |
| Width range across 61900-series | 3–118 mm |
| Bore position in 61900-series (smallest first) | 7 of 63 |
| Bore above smallest 61900-series size | 6 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 619-9 | SKF | full Dimensions and internal design equivalent — standard interchange. | Same 9×20×6 mm envelope and equivalent catalogue ratings; 619/9 is the open arrangement execution of this size — boundary dimensions interchangeable, only the seal/shield/cage execution differs. |
| W619-9-ZZ | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 9×20×6 mm envelope, but the stainless and chrome-steel executions carry different catalogue ratings (2.34/0.98 kN vs 1.95/0.93 kN) — envelope match, not a load-rating equivalent; choose by corrosion versus load duty. |
| W619-9 | SKF | partial Main dimensions match; tolerances, seals or internal clearance differ. | Same 9×20×6 mm envelope, but the stainless and chrome-steel executions carry different catalogue ratings (2.34/0.98 kN vs 1.95/0.93 kN) — envelope match, not a load-rating equivalent; choose by corrosion versus load duty. |
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 619-9-ZZ model number is decoded
In the miniature 61900-series, the bore is written directly after the slash as 9 mm (bores below 10 mm use the slash spelling). The envelope is 9×20×6 mm (0.354×0.787×0.236 in) with a 5.5 mm radial section height, C 2.34 kN, C0 0.98 kN and Pu 0.043 kN. SKF spells the double shield 619/9-2Z (suffix 2Z); the shields are non-contact, retain grease and block coarse debris but are not liquid-tight. Limiting speed 40000 r/min, catalogue mass 7.6 g. A thin section saves space but leaves little margin for misalignment or shaft deflection.
Typical equipment & failure modes
Common applications
- slew and indexing drives
- industrial electric motors
- gearboxes and speed reducers
- centrifugal and positive-displacement pumps
Known failure patterns
- fine-particle abrasion when non-contact shields let dust through in a dirty environment
- grease aging inside the shielded cavity with no relubrication path
- brinelling from static overload or hammer blows during mounting
- false brinelling from vibration while the shaft stands idle
Selection pitfalls — read before you substitute
- The fatigue load limit is 0.043 kN; it feeds the equivalent-mean-load check, not the basic life calculation — do not substitute one for the other.
- Clearance suffixes follow the seal code in the designation stack (e.g. 619/9-2Z/C3 in SKF spelling); no suffix means normal CN internal clearance.
- Shields on 619-9-ZZ are non-contact: chips and coarse dust stay out, but water passes straight through — specify the sealed 619/9-2RS for washdown duty.
- Do not pry the caps off 619-9-ZZ to repack it; shield/seal damage leaves a gap that throws grease and admits dirt.
- At 9 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.
- Catalogue ratings for 619-9-ZZ (C 2.34 kN, C0 0.98 kN) are SKF figures from PUB BU/P1 17000; geometry revisions can change ratings without changing the designation, so keep the catalogue edition with the specification.
Frequently asked questions
What are the dimensions of 619-9-ZZ?
The SKF 619/9-2Z measures 9 mm bore × 20 mm OD × 6 mm width (0.354 × 0.787 × 0.236 in), mass about 7.6 g. It has two non-contact sheet-metal shields.
Why is there a slash in the designation 619/9-2Z?
The slash writes a bore that falls outside the two-digit code table: 619/9 means 9 mm bore. The site slug 619-9-ZZ replaces the slash with a hyphen.
What load can 619-9-ZZ take?
Catalogue values for 619/9-2Z: dynamic C 2.34 kN, static C0 0.98 kN, fatigue limit Pu 0.043 kN. Use C in life calculation and C0 for static checks at 9 mm bore.
What is the speed rating of 619-9-ZZ?
SKF lists a 80000 r/min thermal reference speed and a 40000 r/min mechanical limiting speed for 619/9-2Z; 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.