BT2B332516A-HA1 bearing: complete specifications & equivalents
The BT2B332516A-HA1 is a ANSI ABMA 19.2 radial bearing sized 317.5 x 447.675 x 180.975 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 317.5 mm |
| Outer diameter D | 447.675 mm |
| Width B | 180.975 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 2521 kN |
| Basic static load rating C0 | 5400 kN |
| Fatigue load limit Pu | 440 kN |
| Operating temperature | -40 to +120 °C |
| Mass | 84000 g |
| Manufacturer designation | SKF BT2B 332516 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 & tdo-series range
| Bore d | 12.5 in |
|---|---|
| Outer diameter D | 17.625 in |
| Width B | 7.125 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 65.1 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) | 8 of 23 |
| Bore above smallest tdo-series size | 215.9 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| BT2B332516A | 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 BT2B332516A-HA1 model number is decoded
The TDO/XDC execution of BT2B332516A-HA1 differs from sibling variants in internal detail — spacer style, rib execution or clearance class — while sharing the 317.5×447.675×180.975 mm boundary; the full designation including the variant is the only safe order reference. TDO mounting: the double cup is clamped in the housing and the two cones take interference on the 317.5 mm shaft; press force goes through the cone faces only — driving through the rollers brinells both raceways at once.BT2B332516A-HA1 is a double-row tapered roller bearing of the TDO design, listed by SKF in SKF catalogue PUB BU/P1 17000: one double cup and two cones in a fixed X arrangement with the axial clearance set at the factory — a ready-to-mount unit for heavy combined load.The code SKF BT2B 332516 A/HA1 is not an ISO 355 number: double-row tapered bearings of this size follow SKF works numbering, where BT2B 332516 fixes the 317.5×447.675×180.975 mm envelope and the variant suffix (TDO/XDC) fixes the internal execution. Clearance note for BT2B332516A-HA1: the operating clearance is set at the factory by spacer grinding between the two rows; the TDO/XDC variant encodes that setting, so the unit mounts without any adjustment — the assembler only verifies seat contact and clamps axially. 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 84.0 kg mass and the 447.675 mm OD surface. Material and manufacturing detail: the 84000 g catalogue mass reflects through-hardened bearing steel machined to the listed envelope; ring roundness and width tolerance keep the mounted-setting scatter inside the catalogue class.
Typical equipment & failure modes
Common applications
- wind-turbine main shafts
- marine propulsion gearboxes
- large industrial mixer shafts
- offshore winch and drawworks drums
Known failure patterns
- unequal load sharing between the two roller rows when the centre spacer loses its factory grinding
- brinelling of both raceways when mounting force is transmitted through the roller complement
- cage pocket scoring when the bearing starts cold with grease of too-high base-oil viscosity
- grease degradation after long shelf storage without rotation or re-greasing
- brinelling from pressing the cone or cup home through the rollers
Selection pitfalls — read before you substitute
- Contamination control matters twice over for double-row units: particles trapped between the rows of BT2B332516A-HA1 cannot migrate out, so flush the housing before assembly and fit filtration matched to the oil flow.
- Contamination control matters twice over for double-row units: particles trapped between the rows of BT2B332516A-HA1 cannot migrate out, so flush the housing before assembly and fit filtration matched to the oil flow.
- Contamination control matters twice over for double-row units: particles trapped between the rows of BT2B332516A-HA1 cannot migrate out, so flush the housing before assembly and fit filtration matched to the oil flow.
- The 2521/5400 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 332516 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 BT2B332516A-HA1?
The SKF BT2B 332516 A/HA1 is a double-row tapered roller bearing of TDO design with 317.5 mm bore, 447.675 mm outer diameter and 180.975 mm overall width (12.5 × 17.625 × 7.125 in). From SKF catalogue PUB BU/P1 17000: basic dynamic load rating C 2521 kN, C0 5400 kN, fatigue load limit Pu 440 kN, mass about 84.00 kg.
What does the TDO/XDC variant code on BT2B332516A-HA1 mean?
Double-row tapered bearings of this size follow SKF works numbering: the base number BT2B 332516 fixes the 317.5×447.675×180.975 mm envelope, and the TDO/XDC 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 BT2B332516A-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 84.0 kg assembly mass and instrument the first run with temperature logging.
Can components of BT2B332516A-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 BT2B332516A-HA1 as a complete assembly in the same TDO/XDC variant.
How does BT2B332516A-HA1 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.