BT2B332830 bearing: complete specifications & equivalents
The BT2B332830 is a ANSI ABMA 19.2 radial bearing sized 340 x 460 x 160 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 340 mm |
| Outer diameter D | 460 mm |
| Width B | 160 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 2196 kN |
| Basic static load rating C0 | 4900 kN |
| Fatigue load limit Pu | 400 kN |
| Operating temperature | -40 to +120 °C |
| Mass | 71000 g |
| Manufacturer designation | SKF BT2B 332830 |
| 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 | 13.386 in |
|---|---|
| Outer diameter D | 18.11 in |
| Width B | 6.299 in |
| ISO bore code | 30 |
| Radial section height (D−d)/2 | 60 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) | 11 of 23 |
| Bore above smallest tdo-series size | 238.4 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| BT2B332830 | 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 BT2B332830 model number is decoded
The TDO/D suffix on BT2B332830 is a design-variant code in the SKF double-row numbering system; it identifies which internal configuration sits inside the 340×460×160 mm envelope. In the TDO X-arrangement the two cones of BT2B332830 locate the shaft in both axial directions; the housing seat for the 460 mm double cup is a loose-to-transition fit so thermal growth does not preload the rows.The SKF BT2B 332830 is a 340×460×160 mm TDO double-row tapered roller bearing — two roller rows on a common double cup, delivered clearance-set as one assembly weighing 71.0 kg.The code SKF BT2B 332830 is not an ISO 355 number: double-row tapered bearings of this size follow SKF works numbering, where BT2B 332830 fixes the 340×460×160 mm envelope and the variant suffix (TDO/D) fixes the internal execution. Wear pattern reading at overhaul: the two rows of BT2B332830 should show symmetric raceway contact; one-sided wear points to housing misalignment or a cocked seat rather than to a material defect. Selection arithmetic: C 2196 kN and C0 4900 kN are ratings of the complete double-row unit, giving a C0/C balance of 2.23; the fatigue load limit Pu 400 kN is the floor for the adjusted-life calculation at the 340 mm bore. Journal and housing interface: the 340 mm bore takes a m6 shaft seat and the 460 mm outside diameter pairs with an H7 housing bore; the 160 mm width defines shoulder depth and the 71000 g mass is the dead load in thermal-growth calculations.
Typical equipment & failure modes
Common applications
- marine propulsion gearboxes
- large industrial mixer shafts
- offshore winch and drawworks drums
- rolling-mill roll-neck bearings
Known failure patterns
- axial clamping ring bolt relaxation that lets the clearance-set rows walk apart under reversing thrust
- unequal load sharing between the two roller rows when the centre spacer loses its factory grinding
- pressed-steel cage wear or fracture after prolonged running above the limiting speed
- hard-particle indentation of the tapered raceway in unfiltered oil
- 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 BT2B332830 installation with temperature logging.
- Lifting BT2B332830 by one ring separates the assembly; sling through the 340 mm bore or use the shaft as the lifting member.
- Never adjust the clearance of BT2B332830 in the field: the two rows are set by ground spacers at the factory, and shim experiments on a 71.0 kg assembly usually end in overheated rows.
- The 2196/4900 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 332830 designation when purchasing — base-number-only orders are ambiguous across executions and variants.
Frequently asked questions
What are the dimensions and catalogue data of BT2B332830?
The SKF BT2B 332830 is a double-row tapered roller bearing of TDO design with 340 mm bore, 460 mm outer diameter and 160 mm overall width (13.386 × 18.11 × 6.299 in). From SKF catalogue PUB BU/P1 17000: basic dynamic load rating C 2196 kN, C0 4900 kN, fatigue load limit Pu 400 kN, mass about 71.00 kg.
What does the TDO/D variant code on BT2B332830 mean?
Double-row tapered bearings of this size follow SKF works numbering: the base number BT2B 332830 fixes the 340×460×160 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 BT2B332830?
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 71.0 kg assembly mass and instrument the first run with temperature logging.
Can components of BT2B332830 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 BT2B332830 as a complete assembly in the same TDO/D variant.
How does BT2B332830 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.