32022T84X-DB bearing: complete specifications & equivalents
The 32022T84X-DB is a ISO 355 radial bearing sized 110 x 170 x 84 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | SKF |
| Bore diameter d | 110 mm |
| Outer diameter D | 170 mm |
| Width B | 84 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Basic dynamic load rating C | 494 kN |
| Basic static load rating C0 | 780 kN |
| Fatigue load limit Pu | 80 kN |
| Reference speed (thermal) | 2400 rpm |
| Limiting speed (mechanical) | 3600 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 6500 g |
| Manufacturer designation | SKF 32022T84 X/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 | 4.331 in |
|---|---|
| Outer diameter D | 6.693 in |
| Width B | 3.307 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 30 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) | 16 of 30 |
| Bore above smallest matched-db-series size | 75 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 32022T84X | 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 32022T84X-DB model number is decoded
Dimensional interchange map: within its boundary plan the 110×170×84 mm envelope of 32022T84X-DB is fixed, so shoulder, spacer and seal drawings can be dimensioned straight from the catalogue table. Inspection shorthand: at overhaul, mark both bearings and the spacer of 32022T84X-DB before disassembly — the set is a matched system, and re-assembling with one component reversed changes the factory setting. The rotating cones of 32022T84X-DB take a m6 seat on the 110 mm shaft; the cups are a transition-to-loose fit so the pair can be clamped to its factory setting during assembly.32022T84X-DB (SKF 32022T84 X/DB) is the back-to-back (O) matched pair matched-set choice for a 110 mm shaft: a pair of tapered roller bearings whose combined envelope is 170×84 mm, delivered ready to mount with controlled internal clearance.Digit by digit, 32022T84X-DB reads as the ISO 355 base bearing 32022T84 X supplied as a back-to-back (O) matched pair matched pair (/DB); the 110 mm bore and 170 mm OD are per-bearing, the 84 mm width is for the set. In the back-to-back (O) arrangement the load lines diverge toward the shaft axis, giving the pair a wide effective spread: 32022T84X-DB resists overturning moments and tilting loads stiffly, which is why O-sets are preferred for gearbox output shafts and pinion supports. Dividing the pair C 494 kN by the 110 mm bore gives 4.49 kN per millimetre of journal for the complete arrangement — a density metric that compares matched sets across the back-to-back (O) matched pair family.
Typical equipment & failure modes
Common applications
- heavy industrial gearboxes and speed reducers
- large process pump and compressor shafts
- rolling-mill auxiliary drives
- large process pump and compressor shafts
Known failure patterns
- axial overload spalling at the roller-rib contact beyond the single-row thrust rating
- false brinelling on idle paired sets exposed to machine vibration
- pressed-steel cage wear or fracture after prolonged running above the limiting speed
- rolling-contact fatigue spalling after the rated L10 life is exceeded
- edge loading from shaft deflection or housing misalignment
Selection pitfalls — read before you substitute
- Replace 32022T84X-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 32022T84X-DB concentrates reversing thrust on one bearing and shows up as one-sided raceway wear.
- O and X arrangements are not interchangeable by turning the set around: 32022T84X-DB in back-to-back (O) matched pair arrangement has its load-line geometry fixed — specify the arrangement from the shaft thermal and stiffness analysis.
- The 494/780 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 32022T84 X/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 32022T84X-DB?
The SKF 32022T84 X/DB is a matched pair of single-row tapered roller bearings in back-to-back (O) matched pair arrangement with 110 mm bore, 170 mm outer diameter and 84 mm overall width (4.331 × 6.693 × 3.307 in). From SKF catalogue PUB BU/P1 17000: basic dynamic load rating C 494 kN, C0 780 kN, fatigue load limit Pu 80 kN, reference speed 2,400 r/min, limiting speed 3,600 r/min, mass about 6.50 kg.
What does the /DB suffix on 32022T84X-DB mean?
The base 32022T84 X 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 32022T84X-DB for one bearing or the pair?
They are for the complete matched pair: C 494 kN dynamic and C0 780 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 32022T84 X table values.
Can 32022T84X-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 110 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 110 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.