331617 bearing: complete specifications & equivalents
The 331617 is a ANSI ABMA 19.2 radial bearing sized 305.07 x 560 x 199.237 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 305.07 mm |
| Outer diameter D | 560 mm |
| Width B | 199.237 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 3102 kN |
| Basic static load rating C0 | 5300 kN |
| Fatigue load limit Pu | 430 kN |
| Operating temperature | -40 to +120 °C |
| Mass | 200000 g |
| Manufacturer designation | SKF 331617 |
| 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 | 12.011 in |
|---|---|
| Outer diameter D | 22.047 in |
| Width B | 7.844 in |
| ISO bore code | 17 |
| Radial section height (D−d)/2 | 127.5 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) | 8 of 25 |
| Bore above smallest tdi-series size | 101.87 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 331617 | 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 331617 model number is decoded
Load system: C 3102 kN against C0 5300 kN gives a 1.71 balance, and 10.17 kN of dynamic capacity per millimetre of the 305.07 mm bore is the density figure to compare against neighbouring sizes. The TDIS/N2Y execution of 331617 differs from sibling variants in internal detail — spacer style, rib execution or clearance class — while sharing the 305.07×560×199.237 mm boundary; the full designation including the variant is the only safe order reference. TDI mounting: the double cone takes the m6 shaft seat at 305.07 mm bore, and the two single cups are seated separately in the housing — check cup-face contact around the full circumference before axial clamping.In SKF catalogue PUB BU/P1 17000, 331617 appears as SKF 331617: a TDI-design double-row tapered roller bearing for a 305.07 mm shaft, rated C 3102 kN in the TDIS/N2Y execution.Digit by digit, 331617 breaks into the base number 331617 — the 305.07×560×199.237 mm boundary — and the TDIS/N2Y variant code, which is part of the order designation and must be quoted in full at purchase. The 199.237 mm ring width within the 199.237 mm overall width is the space taken by the centre element of the set; abutment and spacer drawings should be dimensioned from the catalogue width table, not scaled from a single-row bearing. 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 200.0 kg mass and the 560 mm OD surface.
Typical equipment & failure modes
Common applications
- large industrial mixer shafts
- offshore winch and drawworks drums
- rolling-mill roll-neck bearings
- offshore winch and drawworks drums
Known failure patterns
- water or scale ingress at the separable ring parting lines in roll-neck service
- water or scale ingress at the separable ring parting lines in roll-neck service
- 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
- rib-roller contact scoring from loss of the EP additive film
Selection pitfalls — read before you substitute
- The 305.07 mm bore seat must be checked for ovality before mounting — at this size a worn seat lets the cone creep, and fretting debris then works between the rows of 331617.
- Contamination control matters twice over for double-row units: particles trapped between the rows of 331617 cannot migrate out, so flush the housing before assembly and fit filtration matched to the oil flow.
- The 305.07 mm bore seat must be checked for ovality before mounting — at this size a worn seat lets the cone creep, and fretting debris then works between the rows of 331617.
- The 3102/5300 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 331617 designation when purchasing — base-number-only orders are ambiguous across executions and variants.
Frequently asked questions
What are the dimensions and catalogue data of 331617?
The SKF 331617 is a double-row tapered roller bearing of TDI design with 305.07 mm bore, 560 mm outer diameter and 199.237 mm overall width (12.011 × 22.047 × 7.844 in). From SKF catalogue PUB BU/P1 17000: basic dynamic load rating C 3102 kN, C0 5300 kN, fatigue load limit Pu 430 kN, mass about 200.00 kg.
What does the TDIS/N2Y variant code on 331617 mean?
Double-row tapered bearings of this size follow SKF works numbering: the base number 331617 fixes the 305.07×560×199.237 mm envelope, and the TDIS/N2Y 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 331617?
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 200.0 kg assembly mass and instrument the first run with temperature logging.
Can components of 331617 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 331617 as a complete assembly in the same TDIS/N2Y variant.
How does 331617 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.