BT2B332845-HA2 bearing: complete specifications & equivalents
The BT2B332845-HA2 is a ANSI ABMA 19.2 radial bearing sized 330.2 x 482.6 x 177.8 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 330.2 mm |
| Outer diameter D | 482.6 mm |
| Width B | 177.8 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 1293 kN |
| Basic static load rating C0 | 5000 kN |
| Fatigue load limit Pu | 415 kN |
| Operating temperature | -40 to +120 °C |
| Mass | 100000 g |
| Manufacturer designation | SKF BT2B 332845/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 | 13 in |
|---|---|
| Outer diameter D | 19 in |
| Width B | 7 in |
| ISO bore code | 45 |
| Radial section height (D−d)/2 | 76.2 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) | 9 of 23 |
| Bore above smallest tdo-series size | 228.6 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| BT2B332845 | 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 BT2B332845-HA2 model number is decoded
Lubrication planning: two roller rows inside a 482.6 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. 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 100.0 kg mass and the 482.6 mm OD surface. Assembly datum check: verify the 177.8 mm width against the drawing before clamping — the width is the assembled result and the quickest field check that the correct execution of BT2B332845-HA2 is on the shaft. Documentation tip: record the TDO/D variant with the machine BOM entry for BT2B332845-HA2; 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 330.2 mm shaft; press force goes through the cone faces only — driving through the rollers brinells both raceways at once.In SKF catalogue PUB BU/P1 17000, BT2B332845-HA2 appears as SKF BT2B 332845/HA2: a TDO-design double-row tapered roller bearing for a 330.2 mm shaft, rated C 1293 kN with the factory-set internal clearance of the TDO/D variant.On the SKF nameplate, BT2B332845-HA2 reads as base BT2B 332845 in the TDO/D design variant; boundary dimensions 330.2×482.6×177.8 mm come from the base number, while clearance setting and spacer style come from the variant.
Typical equipment & failure modes
Common applications
- large crusher and mineral-processing drives
- wind-turbine main shafts
- marine propulsion gearboxes
- 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
- pressed-steel cage wear or fracture after prolonged running above the limiting speed
- grease degradation after long shelf storage without rotation or re-greasing
- edge loading from shaft deflection or housing misalignment
Selection pitfalls — read before you substitute
- Do not mix components between units of the same BT2B 332845 base number: cones, cups and spacers are matched per serial — interchange only complete assemblies.
- The 330.2 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 BT2B332845-HA2.
- The 330.2 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 BT2B332845-HA2.
- The 1293/5000 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 332845/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 BT2B332845-HA2?
The SKF BT2B 332845/HA2 is a double-row tapered roller bearing of TDO design with 330.2 mm bore, 482.6 mm outer diameter and 177.8 mm overall width (13 × 19 × 7 in). From SKF catalogue PUB BU/P1 17000: basic dynamic load rating C 1293 kN, C0 5000 kN, fatigue load limit Pu 415 kN, mass about 100.00 kg.
What does the TDO/D variant code on BT2B332845-HA2 mean?
Double-row tapered bearings of this size follow SKF works numbering: the base number BT2B 332845 fixes the 330.2×482.6×177.8 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 BT2B332845-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 100.0 kg assembly mass and instrument the first run with temperature logging.
Can components of BT2B332845-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 BT2B332845-HA2 as a complete assembly in the same TDO/D variant.
How does BT2B332845-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.