32232T179-DB bearing: complete specifications & equivalents
The 32232T179-DB is a ISO 355 radial bearing sized 160 x 290 x 179 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 160 mm |
| Outer diameter D | 290 mm |
| Width B | 179 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 1602 kN |
| Basic static load rating C0 | 2800 kN |
| Fatigue load limit Pu | 265 kN |
| Reference speed (thermal) | 1300 rpm |
| Limiting speed (mechanical) | 2200 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 49000 g |
| Manufacturer designation | SKF 32232T179/DB |
| Standard | ISO 355 |
| 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 & matched-db-series range
| Bore d | 6.299 in |
|---|---|
| Outer diameter D | 11.417 in |
| Width B | 7.047 in |
| ISO bore code | 79 |
| Radial section height (D−d)/2 | 65 mm |
| Smallest bore in matched-db-series | 35 mm |
| Largest outer diameter in matched-db-series | 480 mm |
| Width range across matched-db-series | 41.5–288 mm |
| Bore position in matched-db-series (smallest first) | 21 of 30 |
| Bore above smallest matched-db-series size | 125 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 32232T179 | 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 32232T179-DB model number is decoded
The code breaks down as base bearing 32232T179 plus matched-set suffix /DB: two bearings of the 160 mm bore size, paired back-to-back (O) matched pair, with the 179 mm overall width spanning the whole arrangement. Back-to-back matching puts the large rib ends outward — the stiffest arrangement for moment load, but one that converts shaft thermal growth into preload change; the factory setting of 32232T179-DB already accounts for the expected temperature gradient across the 179 mm pair width. Speed planning for the set uses the catalogue pair values: 1,300 r/min thermal reference and 2,200 r/min mechanical limiting speed — a matched pair runs warmer than one bearing because two roller sets share the 179 mm space. Journal and housing interface: the 160 mm bore takes a m6 shaft seat and the 290 mm outside diameter pairs with an H7 housing bore; the 179 mm width defines shoulder depth and the 49000 g mass is the dead load in thermal-growth calculations. Inspection shorthand: at overhaul, mark both bearings and the spacer of 32232T179-DB before disassembly — the set is a matched system, and re-assembling with one component reversed changes the factory setting. A matched /DB set needs no setting adjustment at mounting: the clearance is built in; the assembler's job is clean seats, correct fits (m6 on a 160 mm rotating shaft) and square abutments.For a 160 mm shaft carrying reversing axial load, SKF lists 32232T179-DB under catalogue execution SKF 32232T179/DB: a factory-matched back-to-back (O) matched pair tapered-roller pair, set and measured as one unit.
Typical equipment & failure modes
Common applications
- offshore winch and drawworks drums
- rolling-mill roll-neck bearings
- heavy-duty rolling-mill gearboxes
- heavy-duty rolling-mill gearboxes
Known failure patterns
- false brinelling on idle paired sets exposed to machine vibration
- uneven load sharing in a pair when spacer faces are not parallel to the bore
- pressed-steel cage wear or fracture after prolonged running above the limiting speed
- rib-roller contact scoring from loss of the EP additive film
- rib-roller contact scoring from loss of the EP additive film
Selection pitfalls — read before you substitute
- Replace 32232T179-DB as a complete set: pairing a new bearing with a worn partner leaves the clearance undefined even when the designation matches.
- Spacer faces must stay parallel within the set's own tolerance; a tilted spacer in 32232T179-DB concentrates reversing thrust on one bearing and shows up as one-sided raceway wear.
- Replace 32232T179-DB as a complete set: pairing a new bearing with a worn partner leaves the clearance undefined even when the designation matches.
- The 1602/2800 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 32232T179/DB designation when purchasing — base-number-only orders are ambiguous across executions and variants.
Frequently asked questions
What are the dimensions and catalogue data of 32232T179-DB?
The SKF 32232T179/DB is a matched pair of single-row tapered roller bearings in back-to-back (O) matched pair arrangement with 160 mm bore, 290 mm outer diameter and 179 mm overall width (6.299 × 11.417 × 7.047 in). From SKF catalogue PUB BU/P1 17000: basic dynamic load rating C 1602 kN, C0 2800 kN, fatigue load limit Pu 265 kN, reference speed 1,300 r/min, limiting speed 2,200 r/min, mass about 49.00 kg.
What does the /DB suffix on 32232T179-DB mean?
The base 32232T179 is the ISO 355 single-row bearing; the /DB suffix marks the matched-set execution — the arrangement (back-to-back (O)), the ground spacer and the factory-set axial clearance class. A matched set cannot be assembled from loose single bearings; quote the full designation when ordering.
Are the C and C0 ratings of 32232T179-DB for one bearing or the pair?
They are for the complete matched pair: C 1602 kN dynamic and C0 2800 kN static already include load sharing between the two bearings. Do not halve them for single-bearing checks, and do not compare them directly with the single-row 32232T179 table values.
Can 32232T179-DB be adjusted like two loose tapered bearings?
No — the axial clearance is set at the factory by selective spacer grinding. Mounting work is limited to clean seats, correct fits (m6 on a rotating 160 mm shaft) and axial clamping through the cones; re-setting in the field destroys the matched clearance class.
When should a back-to-back (O) matched set be chosen?
Choose the back-to-back (O) set where moment stiffness dominates — pinion supports, gearbox output shafts, crane sheaves. The diverging load lines give the widest effective spread at the 160 mm bore.
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.