331713B bearing: complete specifications & equivalents
The 331713B is a ANSI ABMA 19.2 radial bearing sized 342.9 x 533.4 x 139.7 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 342.9 mm |
| Outer diameter D | 533.4 mm |
| Width B | 139.7 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 1373 kN |
| Basic static load rating C0 | 4400 kN |
| Fatigue load limit Pu | 365 kN |
| Operating temperature | -40 to +120 °C |
| Mass | 115000 g |
| Manufacturer designation | SKF 331713 B |
| Standard | ANSI ABMA 19.2 |
| Catalog version | SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 8.3-8.8 TRB variants |
| Last verified | 2026-09-29 |
Source: catalog reference (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 8.3-8.8 TRB variants) · extracted 2026-09-29
Parameters extracted from the official SKF Rolling Bearings catalogue (SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 8.3-8.8 TRB variants); 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 & tdi-series range
| Bore d | 13.5 in |
|---|---|
| Outer diameter D | 21 in |
| Width B | 5.5 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 95.3 mm |
| Smallest bore in tdi-series | 203.2 mm |
| Largest outer diameter in tdi-series | 595 mm |
| Width range across tdi-series | 84–263.525 mm |
| Bore position in tdi-series (smallest first) | 11 of 25 |
| Bore above smallest tdi-series size | 139.7 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 331713B | 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 331713B model number is decoded
TDI mounting: the double cone takes the m6 shaft seat at 342.9 mm bore, and the two single cups are seated separately in the housing — check cup-face contact around the full circumference before axial clamping.331713B is a double-row tapered roller bearing of the TDI design, listed by SKF in SKF catalogue PUB BU/P1 17000: one double cone between two single cups in a fixed O arrangement — a stiff, moment-resisting unit with the axial clearance set at the factory.Numbering for double-row tapered bearings is works-specific: 331713 denotes the envelope (342.9 mm bore, 533.4 mm OD, 139.7 mm width) and the suffix the internal design — two bearings with the same base number but different variants are not interchangeable without checking the variant meaning. Load sharing between the two rows of 331713B depends on the ground spacer; field re-grinding or mixing spacers from another unit — even of the same 331713 base — destroys the factory setting. Dividing C 1373 kN by the 342.9 mm bore gives 4.00 kN per millimetre of journal — heavy-section density typical of double-row tapered units built for slow, heavily loaded shafts. Material and manufacturing detail: the 115000 g catalogue mass reflects through-hardened bearing steel machined to the listed envelope; ring roundness and width tolerance keep the mounted-setting scatter inside the catalogue class. Service-parts note: a worn 331713B must be replaced by the same TDI/GWIY2 variant or by a works-approved successor — the variant encodes the spacer grinding that sets the operating clearance of the two rows.
Typical equipment & failure modes
Common applications
- large industrial mixer shafts
- offshore winch and drawworks drums
- rolling-mill roll-neck bearings
- wind-turbine main shafts
Known failure patterns
- unequal load sharing between the two roller rows when the centre spacer loses its factory grinding
- thermal clearance loss when housing cooling is undersized for two rows of tapered contact
- cage pocket scoring when the bearing starts cold with grease of too-high base-oil viscosity
- rolling-contact fatigue spalling after the rated L10 life is exceeded
- rolling-contact fatigue spalling after the rated L10 life is exceeded
Selection pitfalls — read before you substitute
- Contamination control matters twice over for double-row units: particles trapped between the rows of 331713B cannot migrate out, so flush the housing before assembly and fit filtration matched to the oil flow.
- Contamination control matters twice over for double-row units: particles trapped between the rows of 331713B cannot migrate out, so flush the housing before assembly and fit filtration matched to the oil flow.
- Never adjust the clearance of 331713B in the field: the two rows are set by ground spacers at the factory, and shim experiments on a 115.0 kg assembly usually end in overheated rows.
- The 1373/4400 kN ratings are SKF catalogue 17000 values for this execution; SKF can revise internal geometry without changing the order number, so keep the catalogue version (PUB BU/P1 17000/1 EN, 2018) with the specification.
- Quote the full SKF 331713 B designation when purchasing — base-number-only orders are ambiguous across executions and variants.
Frequently asked questions
What are the dimensions and catalogue data of 331713B?
The SKF 331713 B is a double-row tapered roller bearing of TDI design with 342.9 mm bore, 533.4 mm outer diameter and 139.7 mm overall width (13.5 × 21 × 5.5 in). From SKF catalogue PUB BU/P1 17000: basic dynamic load rating C 1373 kN, C0 4400 kN, fatigue load limit Pu 365 kN, mass about 115.00 kg.
What does the TDI/GWIY2 variant code on 331713B mean?
Double-row tapered bearings of this size follow SKF works numbering: the base number 331713 fixes the 342.9×533.4×139.7 mm envelope, and the TDI/GWIY2 code identifies the internal design variant — spacer execution, rib detail and clearance class. Same-envelope units under a different variant are not interchangeable without checking the variant meaning.
Why does the catalogue list no speed rating for 331713B?
Bearings of this size class run in slow, heavily loaded machinery where the permissible speed is set by the application heat balance rather than a universal table value. Plan lubrication and cooling against the 115.0 kg assembly mass and instrument the first run with temperature logging.
Can components of 331713B be interchanged with another unit of the same base number?
No — cones, cups and spacers of a double-row set are matched per serial and the clearance is set by selective grinding at the factory. Replace 331713B as a complete assembly in the same TDI/GWIY2 variant.
How does 331713B react axial load?
The TDI design works as a fixed O arrangement: one double cone between two single cups gives a wide load spread and high moment stiffness while reacting thrust in both directions through the two rows.
Reviewed & verified by the MPN Base engineering desk against source catalog SKF PUB BU/P1 17000/1 EN (Oct 2018), ch. 8.3-8.8 TRB variants on 2026-09-29. Read our editorial & correction policy.