331713A bearing: complete specifications & equivalents
The 331713A 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 A |
| 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 |
|---|---|---|---|
| 331713A | 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 331713A model number is decoded
The catalogue publishes no speed ratings for this size class — permissible speed is set by the application thermal balance; plan lubrication and cooling against the 115.0 kg mass and the 533.4 mm OD surface. Journal and housing interface: the 342.9 mm bore takes a m6 shaft seat and the 533.4 mm outside diameter pairs with an H7 housing bore; the 139.7 mm width defines shoulder depth and the 115000 g mass is the dead load in thermal-growth calculations. Documentation tip: record the TDI/WIY2 variant with the machine BOM entry for 331713A; at overhaul the variant code is what lets the supplier reproduce the original clearance setting. In the TDI O-arrangement the spread of the two rows of 331713A gives high moment stiffness; the cups must be free to float microscopically in the housing so shaft thermal growth does not consume the factory clearance.SKF 331713 A belongs to the SKF TDI double-row range — the 342.9 mm bore entry with a 533.4 mm outside diameter and 139.7 mm overall width, typical for rolling-mill and heavy industrial shafts.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. Substitution checkpoint: another brand's double-row unit of the same 342.9×533.4×139.7 mm envelope may carry a different internal clearance class — match the TDI/WIY2 execution meaning, not just the boundary dimensions, before swapping.
Typical equipment & failure modes
Common applications
- rolling-mill roll-neck bearings
- heavy-duty rolling-mill gearboxes
- large crusher and mineral-processing drives
- offshore winch and drawworks drums
Known failure patterns
- brinelling of both raceways when mounting force is transmitted through the roller complement
- axial clamping ring bolt relaxation that lets the clearance-set rows walk apart under reversing thrust
- cage pocket scoring when the bearing starts cold with grease of too-high base-oil viscosity
- mounting score marks when the cone is cocked over the shaft keyway or a burr
- grease degradation after long shelf storage without rotation or re-greasing
Selection pitfalls — read before you substitute
- Lifting 331713A by one ring separates the assembly; sling through the 342.9 mm bore or use the shaft as the lifting member.
- Contamination control matters twice over for double-row units: particles trapped between the rows of 331713A cannot migrate out, so flush the housing before assembly and fit filtration matched to the oil flow.
- Lifting 331713A by one ring separates the assembly; sling through the 342.9 mm bore or use the shaft as the lifting member.
- 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 A designation when purchasing — base-number-only orders are ambiguous across executions and variants.
Frequently asked questions
What are the dimensions and catalogue data of 331713A?
The SKF 331713 A 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/WIY2 variant code on 331713A 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/WIY2 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 331713A?
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 331713A 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 331713A as a complete assembly in the same TDI/WIY2 variant.
How does 331713A 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.