BT2B332604-HA1 bearing: complete specifications & equivalents
The BT2B332604-HA1 is a ANSI ABMA 19.2 radial bearing sized 431.8 x 571.5 x 155.575 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 431.8 mm |
| Outer diameter D | 571.5 mm |
| Width B | 155.575 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 1145 kN |
| Basic static load rating C0 | 5100 kN |
| Fatigue load limit Pu | 405 kN |
| Operating temperature | -40 to +120 °C |
| Mass | 100000 g |
| Manufacturer designation | SKF BT2B 332604/HA1 |
| 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 | 17 in |
|---|---|
| Outer diameter D | 22.5 in |
| Width B | 6.125 in |
| ISO bore code | 04 |
| Radial section height (D−d)/2 | 69.8 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) | 23 of 23 |
| Bore above smallest tdo-series size | 330.20000000000005 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| BT2B332604 | 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 BT2B332604-HA1 model number is decoded
BT2B332604-HA1 is a double-row tapered roller bearing of the TDO design, listed by SKF in SKF catalogue PUB BU/P1 17000: one double cup and two cones in a fixed X arrangement with the axial clearance set at the factory — a ready-to-mount unit for heavy combined load.Numbering for double-row tapered bearings is works-specific: BT2B 332604 denotes the envelope (431.8 mm bore, 571.5 mm OD, 155.575 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. Lubrication planning: two roller rows inside a 571.5 mm OD envelope sweep a large contact area per revolution; oil circulation or a defined grease-relubrication interval should be sized against the 100.0 kg assembly mass. Dividing C 1145 kN by the 431.8 mm bore gives 2.65 kN per millimetre of journal — heavy-section density typical of double-row tapered units built for slow, heavily loaded shafts. Dimensional interchange map: within its boundary plan the 431.8×571.5×155.575 mm envelope of BT2B332604-HA1 is fixed, so shoulder, spacer and seal drawings can be dimensioned straight from the catalogue table. Documentation tip: record the TDO/D variant with the machine BOM entry for BT2B332604-HA1; at overhaul the variant code is what lets the supplier reproduce the original clearance setting. TDO mounting: the double cup is clamped in the housing and the two cones take interference on the 431.8 mm shaft; press force goes through the cone faces only — driving through the rollers brinells both raceways at once.
Typical equipment & failure modes
Common applications
- offshore winch and drawworks drums
- rolling-mill roll-neck bearings
- heavy-duty rolling-mill gearboxes
- offshore winch and drawworks drums
Known failure patterns
- unequal load sharing between the two roller rows when the centre spacer loses its factory grinding
- unequal load sharing between the two roller rows when the centre spacer loses its factory grinding
- 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
- edge loading from shaft deflection or housing misalignment
Selection pitfalls — read before you substitute
- Contamination control matters twice over for double-row units: particles trapped between the rows of BT2B332604-HA1 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 BT2B332604-HA1 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 BT2B332604-HA1 cannot migrate out, so flush the housing before assembly and fit filtration matched to the oil flow.
- The 1145/5100 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 332604/HA1 designation when purchasing — base-number-only orders are ambiguous across executions and variants.
Frequently asked questions
What are the dimensions and catalogue data of BT2B332604-HA1?
The SKF BT2B 332604/HA1 is a double-row tapered roller bearing of TDO design with 431.8 mm bore, 571.5 mm outer diameter and 155.575 mm overall width (17 × 22.5 × 6.125 in). From SKF catalogue PUB BU/P1 17000: basic dynamic load rating C 1145 kN, C0 5100 kN, fatigue load limit Pu 405 kN, mass about 100.00 kg.
What does the TDO/D variant code on BT2B332604-HA1 mean?
Double-row tapered bearings of this size follow SKF works numbering: the base number BT2B 332604 fixes the 431.8×571.5×155.575 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 BT2B332604-HA1?
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 100.0 kg assembly mass and instrument the first run with temperature logging.
Can components of BT2B332604-HA1 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 BT2B332604-HA1 as a complete assembly in the same TDO/D variant.
How does BT2B332604-HA1 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.