331714B bearing: complete specifications & equivalents
The 331714B is a ANSI ABMA 19.2 radial bearing sized 409.575 x 546.1 x 161.925 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 409.575 mm |
| Outer diameter D | 546.1 mm |
| Width B | 161.925 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 2669 kN |
| Basic static load rating C0 | 6550 kN |
| Fatigue load limit Pu | 500 kN |
| Operating temperature | -40 to +120 °C |
| Mass | 110000 g |
| Manufacturer designation | SKF 331714 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 | 16.125 in |
|---|---|
| Outer diameter D | 21.5 in |
| Width B | 6.375 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 68.3 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) | 22 of 25 |
| Bore above smallest tdi-series size | 206.375 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 331714B | 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 331714B model number is decoded
Operating context for the 409.575 mm bore: a shaft of this diameter typically runs in the xl-bore band of industrial duty, and the 546.1 mm OD places the housing shoulder near 554 mm outer abutment. Variant check: catalogue siblings of 331714B carry different variant suffixes at the same boundary dimensions; the TDI/GWIY2 code on this unit is not a cosmetic mark — it fixes the internal setting and must match on replacement. TDI mounting: the double cone takes the m6 shaft seat at 409.575 mm bore, and the two single cups are seated separately in the housing — check cup-face contact around the full circumference before axial clamping.331714B 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.Reading the designation: 331714 is the SKF double-row base number tied to the 409.575 mm bore and 546.1 mm OD, and the TDI/GWIY2 suffix identifies the internal design variant — cup/cone configuration, spacer execution and clearance class are encoded there rather than in a generic suffix. At 110.0 kg the 331714B assembly needs mechanical handling at mounting — sling through the bore or use lifting eyes on the shaft, and never lift the unit by one ring alone: the rings are separable. Dividing C 2669 kN by the 409.575 mm bore gives 6.52 kN per millimetre of journal — heavy-section density typical of double-row tapered units built for slow, heavily loaded shafts.
Typical equipment & failure modes
Common applications
- marine propulsion gearboxes
- large industrial mixer shafts
- offshore winch and drawworks drums
- large industrial mixer shafts
Known failure patterns
- unequal load sharing between the two roller rows when the centre spacer loses its factory grinding
- brinelling of both raceways when mounting force is transmitted through the roller complement
- pressed-steel cage wear or fracture after prolonged running above the limiting speed
- fretting corrosion on a loose rotating shaft seat
- hard-particle indentation of the tapered raceway in unfiltered oil
Selection pitfalls — read before you substitute
- Never adjust the clearance of 331714B in the field: the two rows are set by ground spacers at the factory, and shim experiments on a 110.0 kg assembly usually end in overheated rows.
- Lifting 331714B by one ring separates the assembly; sling through the 409.575 mm bore or use the shaft as the lifting member.
- Never adjust the clearance of 331714B in the field: the two rows are set by ground spacers at the factory, and shim experiments on a 110.0 kg assembly usually end in overheated rows.
- The 2669/6550 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 331714 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 331714B?
The SKF 331714 B is a double-row tapered roller bearing of TDI design with 409.575 mm bore, 546.1 mm outer diameter and 161.925 mm overall width (16.125 × 21.5 × 6.375 in). From SKF catalogue PUB BU/P1 17000: basic dynamic load rating C 2669 kN, C0 6550 kN, fatigue load limit Pu 500 kN, mass about 110.00 kg.
What does the TDI/GWIY2 variant code on 331714B mean?
Double-row tapered bearings of this size follow SKF works numbering: the base number 331714 fixes the 409.575×546.1×161.925 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 331714B?
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 110.0 kg assembly mass and instrument the first run with temperature logging.
Can components of 331714B 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 331714B as a complete assembly in the same TDI/GWIY2 variant.
How does 331714B 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.