2319-M bearing: complete specifications & equivalents
The 2319-M is a ISO 15 radial bearing sized 95 x 200 x 67 mm (bore x OD x width). 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 | 67 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | brass |
| Basic dynamic load rating C | 165 kN |
| Basic static load rating C0 | 64 kN |
| Fatigue load limit Pu | 2.75 kN |
| Reference speed (thermal) | 6000 rpm |
| Limiting speed (mechanical) | 4500 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 9800 g |
| Manufacturer designation | 2319 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 & 2300-series range
| Bore d | 3.74 in |
|---|---|
| Outer diameter D | 7.874 in |
| Width B | 2.638 in |
| ISO bore code | 19 |
| Radial section height (D−d)/2 | 52.5 mm |
| Smallest bore in 2300-series | 10 mm |
| Largest outer diameter in 2300-series | 215 mm |
| Width range across 2300-series | 17–73 mm |
| Bore position in 2300-series (smallest first) | 20 of 21 |
| Bore above smallest 2300-series size | 85 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 2319 | 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. |
| 2319-KM | SKF | full Dimensions and internal design equivalent — standard interchange. | Same 95×200×67 mm envelope with catalogue ratings within 10 %; 2319 KM is the machined brass cage, open arrangement, tapered bore execution of this size — boundary dimensions interchangeable, only the seal/cage/bore execution differs. |
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 2319-M model number is decoded
The 23xx series is the wide medium-section self-aligning ball bearing (ISO dimension series 23). the last two digits encode the bore: 2319 carries code 19 = 95 mm (code × 5). Envelope 95×200×67 mm (3.74×7.874×2.638 in) with a 52.5 mm radial section height, C 165 kN, C0 64 kN and Pu 2.75 kN. The open 2319 M carries no shields or seals and relies on application lubrication and external sealing. The M suffix identifies the machined brass cage execution. The bore is cylindrical (straight), for a press-fit on a 95 mm shaft. Reference (thermal) speed 6000 r/min, limiting speed 4500 r/min, catalogue mass 9800 g.
Typical equipment & failure modes
Common applications
- conveyor drum and pulley shafts
- agricultural gearboxes
- textile machinery drives
- industrial fans and blowers
Known failure patterns
- contamination wear when the open arrangement is used without adequate external sealing
- lubricant starvation where no regreasing interval is maintained
- fretting corrosion on a creeping shaft or housing seat
- cage damage from running beyond the limiting speed
Selection pitfalls — read before you substitute
- Self-aligning ball bearings tolerate up to roughly 2–3° of static misalignment, but the sealed 2319-M (2RS1) allows less — the lip seal binds before the spherical raceway does.
- The fatigue load limit is 2.75 kN; it feeds the equivalent-mean-load check, not the basic life calculation — do not substitute one for the other.
- The M suffix on 2319-M denotes a machined brass cage: the choice for high speeds, marginal lubrication and shock/vibration duty, and temperature-tolerant where polymer cages are not.
- Mount 2319-M by heating the inner ring (max 120 °C) on a cylindrical bore — driving it home through the outer ring or balls brinells the raceways.
- The fatigue load limit is 2.75 kN; it feeds the equivalent-mean-load check, not the basic life calculation — do not substitute one for the other.
- At 95 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.
Frequently asked questions
What are the dimensions of 2319-M?
SKF 2319 M measures 95 mm bore × 200 mm OD × 67 mm width (3.74 × 7.874 × 2.638 in), mass about 9800 g. It is open, with no shields or seals.
How does the bore code in 2319 work?
The final two digits of 2319 are bore code 19, multiplied by 5 to give 95 mm.
Can 2319-M take axial load?
A self-aligning ball bearing can carry some axial load in addition to radial load, but its axial capacity is lower than an angular-contact bearing of the same envelope. Use it where misalignment, not thrust, is the main requirement.
Which fits should I use for 2319-M?
With a rotating inner ring use roughly k5 on the shaft and H7 in the 200 mm housing; reverse the interference if the outer ring rotates.
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.