BT2B328934-HA3 bearing: complete specifications & equivalents
The BT2B328934-HA3 is a ANSI ABMA 19.2 radial bearing sized 390 x 590 x 200 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 390 mm |
| Outer diameter D | 590 mm |
| Width B | 200 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 2967 kN |
| Basic static load rating C0 | 6550 kN |
| Fatigue load limit Pu | 510 kN |
| Operating temperature | -40 to +120 °C |
| Mass | 200000 g |
| Manufacturer designation | SKF BT2B 328934/HA3 |
| 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 | 15.354 in |
|---|---|
| Outer diameter D | 23.228 in |
| Width B | 7.874 in |
| ISO bore code | 34 |
| Radial section height (D−d)/2 | 100 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) | 19 of 25 |
| Bore above smallest tdi-series size | 186.8 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| BT2B328934 | 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 BT2B328934-HA3 model number is decoded
Load sharing between the two rows of BT2B328934-HA3 depends on the ground spacer; field re-grinding or mixing spacers from another unit — even of the same BT2B 328934 base — destroys the factory setting. The 100.0 mm radial section height ((590−390)/2) and 200 mm width frame a unit whose two rows share reversing thrust; keep the equivalent load P against the pair rating C 2967 kN, never against a single-row figure. Assembly datum check: verify the 200 mm width against the drawing before clamping — the width is the assembled result and the quickest field check that the correct execution of BT2B328934-HA3 is on the shaft. The TDIS.2/N execution of BT2B328934-HA3 differs from sibling variants in internal detail — spacer style, rib execution or clearance class — while sharing the 390×590×200 mm boundary; the full designation including the variant is the only safe order reference. TDI mounting: the double cone takes the m6 shaft seat at 390 mm bore, and the two single cups are seated separately in the housing — check cup-face contact around the full circumference before axial clamping.Ordering number SKF BT2B 328934/HA3 in SKF catalogue PUB BU/P1 17000 denotes a TDI double-row tapered roller bearing for a 390 mm shaft: double cone, two single cups, factory-set internal clearance in the TDIS.2/N variant.Reading the designation: BT2B 328934 is the SKF double-row base number tied to the 390 mm bore and 590 mm OD, and the TDIS.2/N suffix identifies the internal design variant — cup/cone configuration, spacer execution and clearance class are encoded there rather than in a generic suffix.
Typical equipment & failure modes
Common applications
- heavy-duty rolling-mill gearboxes
- large crusher and mineral-processing drives
- wind-turbine main shafts
- large industrial mixer shafts
Known failure patterns
- thermal clearance loss when housing cooling is undersized for two rows of tapered contact
- 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
- grease degradation after long shelf storage without rotation or re-greasing
- grease degradation after long shelf storage without rotation or re-greasing
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 BT2B328934-HA3 installation with temperature logging.
- Lifting BT2B328934-HA3 by one ring separates the assembly; sling through the 390 mm bore or use the shaft as the lifting member.
- Contamination control matters twice over for double-row units: particles trapped between the rows of BT2B328934-HA3 cannot migrate out, so flush the housing before assembly and fit filtration matched to the oil flow.
- The 2967/6550 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 328934/HA3 designation when purchasing — base-number-only orders are ambiguous across executions and variants.
Frequently asked questions
What are the dimensions and catalogue data of BT2B328934-HA3?
The SKF BT2B 328934/HA3 is a double-row tapered roller bearing of TDI design with 390 mm bore, 590 mm outer diameter and 200 mm overall width (15.354 × 23.228 × 7.874 in). From SKF catalogue PUB BU/P1 17000: basic dynamic load rating C 2967 kN, C0 6550 kN, fatigue load limit Pu 510 kN, mass about 200.00 kg.
What does the TDIS.2/N variant code on BT2B328934-HA3 mean?
Double-row tapered bearings of this size follow SKF works numbering: the base number BT2B 328934 fixes the 390×590×200 mm envelope, and the TDIS.2/N 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 BT2B328934-HA3?
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 200.0 kg assembly mass and instrument the first run with temperature logging.
Can components of BT2B328934-HA3 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 BT2B328934-HA3 as a complete assembly in the same TDIS.2/N variant.
How does BT2B328934-HA3 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.