BT2B328695A-HA1 bearing: complete specifications & equivalents
The BT2B328695A-HA1 is a ANSI ABMA 19.2 radial bearing sized 333.375 x 469.9 x 166.688 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 333.375 mm |
| Outer diameter D | 469.9 mm |
| Width B | 166.688 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 2642 kN |
| Basic static load rating C0 | 5700 kN |
| Fatigue load limit Pu | 465 kN |
| Operating temperature | -40 to +120 °C |
| Mass | 92500 g |
| Manufacturer designation | SKF BT2B 328695 A/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 | 13.125 in |
|---|---|
| Outer diameter D | 18.5 in |
| Width B | 6.563 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 68.3 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) | 10 of 25 |
| Bore above smallest tdi-series size | 130.175 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| BT2B328695A | 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 BT2B328695A-HA1 model number is decoded
Dividing C 2642 kN by the 333.375 mm bore gives 7.93 kN per millimetre of journal — heavy-section density typical of double-row tapered units built for slow, heavily loaded shafts. Cross-section geometry: the 68.3 mm half-section ((469.9−333.375)/2) places the roller pitch diameter near 401 mm, and the 166.688 mm axial width sets the abutment depth — geometry that fixes the contact angle behaviour of BT2B328695A-HA1. When cross-referencing BT2B328695A-HA1, note that the TDIT/Y2 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. In the TDI O-arrangement the spread of the two rows of BT2B328695A-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.In SKF catalogue PUB BU/P1 17000, BT2B328695A-HA1 appears as SKF BT2B 328695 A/HA1: a TDI-design double-row tapered roller bearing for a 333.375 mm shaft, rated C 2642 kN in the TDIT/Y2 execution.The code SKF BT2B 328695 A/HA1 is not an ISO 355 number: double-row tapered bearings of this size follow SKF works numbering, where BT2B 328695 fixes the 333.375×469.9×166.688 mm envelope and the variant suffix (TDIT/Y2) fixes the internal execution. At 92.5 kg the BT2B328695A-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.
Typical equipment & failure modes
Common applications
- large crusher and mineral-processing drives
- wind-turbine main shafts
- marine propulsion gearboxes
- heavy-duty rolling-mill gearboxes
Known failure patterns
- water or scale ingress at the separable ring parting lines in roll-neck service
- thermal clearance loss when housing cooling is undersized for two rows of tapered contact
- cage pocket scoring when the bearing starts cold with grease of too-high base-oil viscosity
- rib-roller contact scoring from loss of the EP additive film
- grease degradation after long shelf storage without rotation or re-greasing
Selection pitfalls — read before you substitute
- Contamination control matters twice over for double-row units: particles trapped between the rows of BT2B328695A-HA1 cannot migrate out, so flush the housing before assembly and fit filtration matched to the oil flow.
- The 333.375 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 BT2B328695A-HA1.
- 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 BT2B328695A-HA1 installation with temperature logging.
- The 2642/5700 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 328695 A/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 BT2B328695A-HA1?
The SKF BT2B 328695 A/HA1 is a double-row tapered roller bearing of TDI design with 333.375 mm bore, 469.9 mm outer diameter and 166.688 mm overall width (13.125 × 18.5 × 6.563 in). From SKF catalogue PUB BU/P1 17000: basic dynamic load rating C 2642 kN, C0 5700 kN, fatigue load limit Pu 465 kN, mass about 92.50 kg.
What does the TDIT/Y2 variant code on BT2B328695A-HA1 mean?
Double-row tapered bearings of this size follow SKF works numbering: the base number BT2B 328695 fixes the 333.375×469.9×166.688 mm envelope, and the TDIT/Y2 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 BT2B328695A-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 92.5 kg assembly mass and instrument the first run with temperature logging.
Can components of BT2B328695A-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 BT2B328695A-HA1 as a complete assembly in the same TDIT/Y2 variant.
How does BT2B328695A-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.