3319-A bearing: complete specifications & equivalents
The 3319-A is a ISO 15 radial bearing sized 95 x 200 x 77.8 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 | 77.8 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 240 kN |
| Basic static load rating C0 | 216 kN |
| Fatigue load limit Pu | 7.5 kN |
| Reference speed (thermal) | 3600 rpm |
| Limiting speed (mechanical) | 3200 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 11000 g |
| Manufacturer designation | 3319 A |
| 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 & 3300-series range
| Bore d | 3.74 in |
|---|---|
| Outer diameter D | 7.874 in |
| Width B | 3.063 in |
| ISO bore code | 19 |
| Radial section height (D−d)/2 | 52.5 mm |
| Smallest bore in 3300-series | 15 mm |
| Largest outer diameter in 3300-series | 240 mm |
| Width range across 3300-series | 19–92.1 mm |
| Bore position in 3300-series (smallest first) | 18 of 20 |
| Bore above smallest 3300-series size | 80 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 3319 | ISO 15 | full Dimensions and internal design equivalent — standard interchange. | ISO 15 boundary-dimension envelope; brand-specific OEM equivalents (NSK/FAG/NTN) pending multi-source data. |
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 3319-A model number is decoded
3319 A is SKF's 95 mm-bore double-row angular-contact ball bearing of the 3300 series — two ball rows back-to-back for two-direction axial location in one unit, 95×200×77.8 mm. A on a double-row bearing means no filling slots, so both rows carry their full ball complement in both directions. with no cage suffix the double-row A execution uses the standard stamped steel ball-centred cage. Envelope 95×200×77.8 mm (3.74×7.874×3.063 in), 52.5 mm radial section height, C 240 kN, C0 216 kN, Pu 7.5 kN.reference speed 3,600 r/min (thermal) and limiting speed 3,200 r/min (mechanical), catalogue mass 11000 g. At the printed limiting speed of 3,200 r/min the mean pitch diameter dm ≈ 147.5 mm implies a dn value around 472k mm·r/min; the 3,600 r/min reference speed is the thermal-planning figure under catalogue load. Selection figures for 3319 A: the static-to-dynamic ratio C0/C is 0.90, Pu 7.5 kN is about 3 % of C, and catalogue mass works out to roughly 116 g per millimetre of bore. Speed-ratio note for this exact unit: the reference speed is 3,600 r/min against a 3,200 r/min limiting speed, i.e. a reference-to-limit ratio of 1.13.
Typical equipment & failure modes
Common applications
- heavy gearbox shafts carrying reversing thrust
- process pump and agitator drives
- crane and winch gearboxes
Known failure patterns
- snap-ring groove or two-piece-ring damage when the D execution is pressed home through the wrong ring
- two-direction thrust overload concentrating load on one row and spalling its raceway
- stamped steel cage noise and pocket wear in marginal-lubrication starts, where a brass-cage execution would survive
- edge loading from shaft deflection or housing misalignment
- brinelling from pressing the ring home through the balls or from static overload
Selection pitfalls — read before you substitute
- Interference goes on the rotating ring (about k5 at 95 mm bore); the wide 77.8 mm ring is sensitive to tilted seats, so check squareness before clamping.
- Catalogue ratings of 240/216 kN apply to the A execution; the D and DNRCBM two-piece-ring executions carry their own figures on their own pages.
- A capped 3319-2Z/-2RS1 execution of this envelope exists for sealed-for-life duty; an open double-row bearing needs application sealing and a defined lubricant supply.
- The double-row 3319 takes thrust in both directions by itself — that is the reason to choose it over two single-row bearings: one housing bore, one fit, built-in set geometry.
- Catalogue ratings are SKF PUB BU/P1 17000 figures for 3319 A as the double a steel execution; the other order numbers of the 3319 size are different products and may carry different ratings — always quote the full designation when purchasing.
Frequently asked questions
What are the dimensions and catalogue data of 3319-A?
3319 A measures 95 mm bore × 200 mm OD × 77.8 mm width (3.74 × 7.874 × 3.063 in), mass about 11000 g. SKF 17000 ratings: C 240 kN, C0 216 kN, Pu 7.5 kN, reference speed 3,600 r/min (thermal) and limiting speed 3,200 r/min (mechanical).
What does the A suffix mean?
A on a double-row bearing means no filling slots, so both rows carry their full ball complement in both directions. with no cage suffix the double-row A execution uses the standard stamped steel ball-centred cage.
What does the D mean in A?
D marks a two-piece inner ring, used on the heavy 33-series executions to simplify mounting; the rest of the suffix identifies the cage (MA brass outer-ring-centred, M brass ball-centred, J1 stamped steel, TN9 PA66) and snap-ring/clearance options (NR, CB).
Does the 3319 double-row bearing need pairing?
No — both ball rows are built into one bearing, so bidirectional location does not require a second unit. Controlled axial clearance is part of the design rather than a field adjustment.
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.