BT2B332802A bearing: complete specifications & equivalents
The BT2B332802A is a ANSI ABMA 19.2 radial bearing sized 342.9 x 533.4 x 174.625 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 | 174.625 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 2540 kN |
| Basic static load rating C0 | 4400 kN |
| Fatigue load limit Pu | 365 kN |
| Operating temperature | -40 to +120 °C |
| Mass | 130000 g |
| Manufacturer designation | SKF BT2B 332802 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 & tdo-series range
| Bore d | 13.5 in |
|---|---|
| Outer diameter D | 21 in |
| Width B | 6.875 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 95.3 mm |
| Smallest bore in tdo-series | 101.6 mm |
| Largest outer diameter in tdo-series | 596.9 mm |
| Width range across tdo-series | 49.212–284 mm |
| Bore position in tdo-series (smallest first) | 12 of 23 |
| Bore above smallest tdo-series size | 241.29999999999998 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| BT2B332802A | 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 BT2B332802A model number is decoded
At 130.0 kg the BT2B332802A 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 2540 kN by the 342.9 mm bore gives 7.41 kN per millimetre of journal — heavy-section density typical of double-row tapered units built for slow, heavily loaded shafts. Load system: C 2540 kN against C0 4400 kN gives a 1.73 balance, and 7.41 kN of dynamic capacity per millimetre of the 342.9 mm bore is the density figure to compare against neighbouring sizes. The TDO/D suffix on BT2B332802A is a design-variant code in the SKF double-row numbering system; it identifies which internal configuration sits inside the 342.9×533.4×174.625 mm envelope. In the TDO X-arrangement the two cones of BT2B332802A locate the shaft in both axial directions; the housing seat for the 533.4 mm double cup is a loose-to-transition fit so thermal growth does not preload the rows.In SKF catalogue PUB BU/P1 17000, BT2B332802A appears as SKF BT2B 332802 A: a TDO-design double-row tapered roller bearing for a 342.9 mm shaft, rated C 2540 kN with the factory-set internal clearance of the TDO/D variant.On the SKF nameplate, BT2B332802A reads as base BT2B 332802 in the TDO/D design variant; boundary dimensions 342.9×533.4×174.625 mm come from the base number, while clearance setting and spacer style come from the variant.
Typical equipment & failure modes
Common applications
- marine propulsion gearboxes
- large industrial mixer shafts
- offshore winch and drawworks drums
- heavy-duty rolling-mill gearboxes
Known failure patterns
- water or scale ingress at the separable ring parting lines in roll-neck service
- axial clamping ring bolt relaxation that lets the clearance-set rows walk apart under reversing thrust
- pressed-steel cage wear or fracture after prolonged running above the limiting speed
- 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
- Do not mix components between units of the same BT2B 332802 base number: cones, cups and spacers are matched per serial — interchange only complete assemblies.
- Contamination control matters twice over for double-row units: particles trapped between the rows of BT2B332802A cannot migrate out, so flush the housing before assembly and fit filtration matched to the oil flow.
- Never adjust the clearance of BT2B332802A in the field: the two rows are set by ground spacers at the factory, and shim experiments on a 130.0 kg assembly usually end in overheated rows.
- The 2540/4400 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 BT2B 332802 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 BT2B332802A?
The SKF BT2B 332802 A is a double-row tapered roller bearing of TDO design with 342.9 mm bore, 533.4 mm outer diameter and 174.625 mm overall width (13.5 × 21 × 6.875 in). From SKF catalogue PUB BU/P1 17000: basic dynamic load rating C 2540 kN, C0 4400 kN, fatigue load limit Pu 365 kN, mass about 130.00 kg.
What does the TDO/D variant code on BT2B332802A mean?
Double-row tapered bearings of this size follow SKF works numbering: the base number BT2B 332802 fixes the 342.9×533.4×174.625 mm envelope, and the TDO/D 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 BT2B332802A?
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 130.0 kg assembly mass and instrument the first run with temperature logging.
Can components of BT2B332802A 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 BT2B332802A as a complete assembly in the same TDO/D variant.
How does BT2B332802A react axial load?
The TDO design works as a fixed X arrangement: one double cup with two cones locates the shaft in both axial directions, with load shared between the two rows according to the factory-set clearance.
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.