BT2B332504-HA2 bearing: complete specifications & equivalents
The BT2B332504-HA2 is a ANSI ABMA 19.2 radial bearing sized 300.038 x 422.275 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 | 300.038 mm |
| Outer diameter D | 422.275 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 | 2177 kN |
| Basic static load rating C0 | 4750 kN |
| Fatigue load limit Pu | 400 kN |
| Operating temperature | -40 to +120 °C |
| Mass | 71500 g |
| Manufacturer designation | SKF BT2B 332504/HA2 |
| 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 | 11.813 in |
|---|---|
| Outer diameter D | 16.625 in |
| Width B | 6.875 in |
| ISO bore code | 04 |
| Radial section height (D−d)/2 | 61.1 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) | 7 of 23 |
| Bore above smallest tdo-series size | 198.43800000000002 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| BT2B332504 | 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 BT2B332504-HA2 model number is decoded
Ordering discipline for BT2B332504-HA2: quote base number and TDO/XDC variant together — the base alone is ambiguous because several internal executions share the same 300.038 mm bore boundary. In the TDO X-arrangement the two cones of BT2B332504-HA2 locate the shaft in both axial directions; the housing seat for the 422.275 mm double cup is a loose-to-transition fit so thermal growth does not preload the rows.The SKF BT2B 332504/HA2 is a 300.038×422.275×174.625 mm TDO double-row tapered roller bearing — two roller rows on a common double cup, delivered clearance-set as one assembly weighing 71.5 kg.On the SKF nameplate, BT2B332504-HA2 reads as base BT2B 332504 in the TDO/XDC design variant; boundary dimensions 300.038×422.275×174.625 mm come from the base number, while clearance setting and spacer style come from the variant. Substitution checkpoint: another brand's double-row unit of the same 300.038×422.275×174.625 mm envelope may carry a different internal clearance class — match the TDO/XDC execution meaning, not just the boundary dimensions, before swapping. Mass 71.5 kg over a 300.038×422.275×174.625 mm envelope: the steel content itself is a heat sink, but the two roller rows generate roughly twice the friction of a single-row bearing of the same bore. Cross-section geometry: the 61.1 mm half-section ((422.275−300.038)/2) places the roller pitch diameter near 361 mm, and the 174.625 mm axial width sets the abutment depth — geometry that fixes the contact angle behaviour of BT2B332504-HA2.
Typical equipment & failure modes
Common applications
- offshore winch and drawworks drums
- rolling-mill roll-neck bearings
- heavy-duty rolling-mill gearboxes
- large crusher and mineral-processing drives
Known failure patterns
- axial clamping ring bolt relaxation that lets the clearance-set rows walk apart under reversing thrust
- water or scale ingress at the separable ring parting lines in roll-neck service
- pressed-steel cage wear or fracture after prolonged running above the limiting speed
- edge loading from shaft deflection or housing misalignment
- hard-particle indentation of the tapered raceway in unfiltered oil
Selection pitfalls — read before you substitute
- Catalogue tables for this size class list no reference speed: derive permissible speed from the application heat balance, and instrument the first run of a BT2B332504-HA2 installation with temperature logging.
- The 300.038 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 BT2B332504-HA2.
- Never adjust the clearance of BT2B332504-HA2 in the field: the two rows are set by ground spacers at the factory, and shim experiments on a 71.5 kg assembly usually end in overheated rows.
- The 2177/4750 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 332504/HA2 designation when purchasing — base-number-only orders are ambiguous across executions and variants.
Frequently asked questions
What are the dimensions and catalogue data of BT2B332504-HA2?
The SKF BT2B 332504/HA2 is a double-row tapered roller bearing of TDO design with 300.038 mm bore, 422.275 mm outer diameter and 174.625 mm overall width (11.813 × 16.625 × 6.875 in). From SKF catalogue PUB BU/P1 17000: basic dynamic load rating C 2177 kN, C0 4750 kN, fatigue load limit Pu 400 kN, mass about 71.50 kg.
What does the TDO/XDC variant code on BT2B332504-HA2 mean?
Double-row tapered bearings of this size follow SKF works numbering: the base number BT2B 332504 fixes the 300.038×422.275×174.625 mm envelope, and the TDO/XDC 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 BT2B332504-HA2?
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 71.5 kg assembly mass and instrument the first run with temperature logging.
Can components of BT2B332504-HA2 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 BT2B332504-HA2 as a complete assembly in the same TDO/XDC variant.
How does BT2B332504-HA2 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.