32234T194-DB bearing: complete specifications & equivalents
The 32234T194-DB is a ISO 355 radial bearing sized 170 x 310 x 194 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 170 mm |
| Outer diameter D | 310 mm |
| Width B | 194 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 1843 kN |
| Basic static load rating C0 | 3250 kN |
| Fatigue load limit Pu | 300 kN |
| Reference speed (thermal) | 1200 rpm |
| Limiting speed (mechanical) | 2000 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 60000 g |
| Manufacturer designation | SKF 32234T194/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 | 6.693 in |
|---|---|
| Outer diameter D | 12.205 in |
| Width B | 7.638 in |
| ISO bore code | 94 |
| Radial section height (D−d)/2 | 70 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) | 22 of 30 |
| Bore above smallest matched-db-series size | 135 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 32234T194 | 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 32234T194-DB model number is decoded
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 170 mm rotating shaft) and square abutments.Ordering number SKF 32234T194/DB in SKF catalogue PUB BU/P1 17000 denotes two single-row tapered roller bearings supplied as a matched back-to-back (O) matched pair set for a 170 mm shaft — one order number, one factory setting.Digit by digit, 32234T194-DB reads as the ISO 355 base bearing 32234T194 supplied as a back-to-back (O) matched pair matched pair (/DB); the 170 mm bore and 310 mm OD are per-bearing, the 194 mm width is for the set. 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 32234T194-DB already accounts for the expected temperature gradient across the 194 mm pair width. Catalogue mass 60000 g covers both bearings and the ground spacer of 32234T194-DB; keep the set complete — substituting one bearing or a non-ground spacer destroys the factory clearance. Operating context for the 170 mm bore: a shaft of this diameter typically runs in the xl-bore band of industrial duty, and the 310 mm OD places the housing shoulder near 318 mm outer abutment. Spacer discipline: the spacer between the two bearings of 32234T194-DB is ground to the individual set — it carries a serial link to the pair, so never swap spacers between sets of the same designation.
Typical equipment & failure modes
Common applications
- large industrial mixer shafts
- offshore winch and drawworks drums
- rolling-mill roll-neck bearings
- wind-turbine main shafts
Known failure patterns
- roller large-end smearing against the cone rib after EP lubricant film failure
- thermal preload runaway in an O-arrangement pair when inner-ring heat expands the setting
- 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
- grease degradation after long shelf storage without rotation or re-greasing
Selection pitfalls — read before you substitute
- Clamp the 32234T194-DB pair axially through the cones, never through the rollers; pressing force across the roller complement brinells the raceways of both bearings at once.
- Clamp the 32234T194-DB pair axially through the cones, never through the rollers; pressing force across the roller complement brinells the raceways of both bearings at once.
- A matched /DB set is ground as one system: never separate the two bearings of 32234T194-DB or swap the spacer — the factory clearance is lost the moment the set is broken.
- The 1843/3250 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 32234T194/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 32234T194-DB?
The SKF 32234T194/DB is a matched pair of single-row tapered roller bearings in back-to-back (O) matched pair arrangement with 170 mm bore, 310 mm outer diameter and 194 mm overall width (6.693 × 12.205 × 7.638 in). From SKF catalogue PUB BU/P1 17000: basic dynamic load rating C 1843 kN, C0 3250 kN, fatigue load limit Pu 300 kN, reference speed 1,200 r/min, limiting speed 2,000 r/min, mass about 60.00 kg.
What does the /DB suffix on 32234T194-DB mean?
The base 32234T194 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 32234T194-DB for one bearing or the pair?
They are for the complete matched pair: C 1843 kN dynamic and C0 3250 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 32234T194 table values.
Can 32234T194-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 170 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 170 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.