BT2B332683-HA1 bearing: complete specifications & equivalents
The BT2B332683-HA1 is a ANSI ABMA 19.2 radial bearing sized 203.2 x 368.3 x 158.75 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 203.2 mm |
| Outer diameter D | 368.3 mm |
| Width B | 158.75 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 1985 kN |
| Basic static load rating C0 | 3350 kN |
| Fatigue load limit Pu | 305 kN |
| Operating temperature | -40 to +120 °C |
| Mass | 75000 g |
| Manufacturer designation | SKF BT2B 332683/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 & tdi-series range
| Bore d | 8 in |
|---|---|
| Outer diameter D | 14.5 in |
| Width B | 6.25 in |
| ISO bore code | 83 |
| Radial section height (D−d)/2 | 82.6 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) | 1 of 25 |
| Bore above smallest tdi-series size | 0 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| BT2B332683 | 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 BT2B332683-HA1 model number is decoded
In the TDI O-arrangement the spread of the two rows of BT2B332683-HA1 gives high moment stiffness; the cups must be free to float microscopically in the housing so shaft thermal growth does not consume the factory clearance.SKF BT2B 332683/HA1 belongs to the SKF TDI double-row range — the 203.2 mm bore entry with a 368.3 mm outside diameter and 158.75 mm overall width, typical for rolling-mill and heavy industrial shafts.Reading the designation: BT2B 332683 is the SKF double-row base number tied to the 203.2 mm bore and 368.3 mm OD, and the TDI/WIY2 suffix identifies the internal design variant — cup/cone configuration, spacer execution and clearance class are encoded there rather than in a generic suffix. At 75.0 kg the BT2B332683-HA1 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. Mass 75.0 kg over a 203.2×368.3×158.75 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. Assembly datum check: verify the 158.75 mm width against the drawing before clamping — the width is the assembled result and the quickest field check that the correct execution of BT2B332683-HA1 is on the shaft. When cross-referencing BT2B332683-HA1, note that the TDI/WIY2 variant is part of the SKF works designation: same-envelope units under another variant code can differ in clearance class and load rating even though d/D/T match.
Typical equipment & failure modes
Common applications
- large industrial mixer shafts
- offshore winch and drawworks drums
- rolling-mill roll-neck bearings
- wind-turbine main shafts
Known failure patterns
- brinelling of both raceways when mounting force is transmitted through the roller complement
- brinelling of both raceways when mounting force is transmitted through the roller complement
- pressed-steel cage wear or fracture after prolonged running above the limiting speed
- fretting corrosion on a loose rotating shaft seat
- hard-particle indentation of the tapered raceway in unfiltered oil
Selection pitfalls — read before you substitute
- Do not mix components between units of the same BT2B 332683 base number: cones, cups and spacers are matched per serial — interchange only complete assemblies.
- Lifting BT2B332683-HA1 by one ring separates the assembly; sling through the 203.2 mm bore or use the shaft as the lifting member.
- 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 BT2B332683-HA1 installation with temperature logging.
- The 1985/3350 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 332683/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 BT2B332683-HA1?
The SKF BT2B 332683/HA1 is a double-row tapered roller bearing of TDI design with 203.2 mm bore, 368.3 mm outer diameter and 158.75 mm overall width (8 × 14.5 × 6.25 in). From SKF catalogue PUB BU/P1 17000: basic dynamic load rating C 1985 kN, C0 3350 kN, fatigue load limit Pu 305 kN, mass about 75.00 kg.
What does the TDI/WIY2 variant code on BT2B332683-HA1 mean?
Double-row tapered bearings of this size follow SKF works numbering: the base number BT2B 332683 fixes the 203.2×368.3×158.75 mm envelope, and the TDI/WIY2 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 BT2B332683-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 75.0 kg assembly mass and instrument the first run with temperature logging.
Can components of BT2B332683-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 BT2B332683-HA1 as a complete assembly in the same TDI/WIY2 variant.
How does BT2B332683-HA1 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.