32022 bearing: complete specifications & equivalents
The 32022 is a ISO 355 radial bearing sized 110 x 170 x 38 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Bore diameter d | 110 mm |
| Outer diameter D | 170 mm |
| Width B | 38 mm |
| Seal / shield | open |
| Internal clearance | CN available |
| Tolerance class | P0 |
| Cage | steel, stamped ribbon (J-type) |
| Operating temperature | -30 to +120 °C |
| Mass (geometry estimate) | 2558 g |
| Standard | ISO 355 |
| Catalog version | iso355-geometry |
| Last verified | 2026-09-24 |
Source: ISO 15 boundary-dimensions standard · extracted 2026-09-24
Standard-interchange bearing: dimensions per ISO 15; CN clearance, P0 tolerance and a stamped-steel cage are catalogue defaults unless the supplier states otherwise, and mass is a geometry-derived estimate. Brand catalogue load ratings and limiting speeds for 32022 are being backfilled — use the inquiry form for certified values.
Dimensions in inches & 32000-series range
| Bore d | 4.331 in |
|---|---|
| Outer diameter D | 6.693 in |
| Width B | 1.496 in |
| ISO bore code | 22 |
| Radial section height (D−d)/2 | 30 mm |
| Smallest bore in 32000-series | 20 mm |
| Largest outer diameter in 32000-series | 225 mm |
| Width range across 32000-series | 15–48 mm |
| Bore position in 32000-series (smallest first) | 19 of 23 |
| Bore above smallest 32000-series size | 90 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 32022 | 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 32022 model number is decoded
In the 32000-series the last two digits of 32022 encode the bore: code 22 = 110 mm (code × 5 from 04 upward). The ISO 355 envelope is 170 mm outside diameter and 38 mm total assembly width T over the separable cone and cup — 4.331 × 6.693 × 1.496 in, with a 30.0 mm radial section height. Tapered rollers carry combined radial and single-direction axial load; bidirectional thrust needs an opposed pair (X face-to-face or O back-to-back) adjusted at fit-up. With a rotating cone on a 110 mm shaft, typical catalogue practice is a m6 shaft seat with an H7 housing bore, EP lubrication and a defined end-play setting — verify against the load direction and magnitude.
Typical equipment & failure modes
Common applications
- truck and trailer wheel hubs
- heavy final drives and differentials
- large conveyor drum pulleys
- crane travel wheels and winch drums
- railway axle boxes
Known failure patterns
- raceway spalling at the roller-rib junction after the L10 life or sustained axial overload
- over-preload heat: a shim stack cut too thin drives contact stress up and seizes the cone on the seat
- under-preload end play that lets the rollers skid, producing noise and false brinelling
- water and grit pitting in unsealed hubs where the cup-cone joint acts as a debris entry path
- false brinelling from vibration while the axle is stationary during transport
Selection pitfalls — read before you substitute
- The large 110 mm-bore 32022 develops substantial mounting forces; heat the cone (induction heater, max 120 °C) and never tighten the adjusting nut to seat it — draw it up by torque, then back off to the mark, leaving roughly 0.05–0.20 mm end play on the 110 mm shaft.
- The 320 narrow series at 110 mm bore keeps the OD down to 170 mm for space-limited hubs; its 38 mm width carries less load than a 30222, so do not substitute it into a 302 application without re-rating.
- Before fitting 32022, machine the 110 mm shaft seat and 170 mm housing bore with a relief or small fillet so nothing bridges the bearing chamfer; the 38 mm-wide cone and cup only load correctly when the full faces abut, and a large radius pinches the 30.0 mm radial section.
- The 32022 cup drives into the 170 mm housing bore with a sleeve against its outer face only; pressure on the inner ring or cage transfers through the rollers and leaves indentations that become spalls within the 38 mm load zone.
- Keep the 32022 pair matched through rebuilds; the 38 mm running geometry and contact pattern are adjusted between the two cups, so replacing one side with an unmarked row shifts the contact patch off-centre and ruins the 110 mm shaft alignment.
- Assign fits by which ring rotates: an interference shaft fit for a rotating cone; if the cup rotates instead, reverse the logic — a loose rotating ring creeps and frets its seat.
- A single 32022 takes thrust in ONE direction — the rollers roll toward the rib under load, so reverse thrust unloads the contact. For a wheel or pinion use an opposing 320-series pair adjusted against each other.
Frequently asked questions
What are the dimensions of a 32022 tapered roller bearing?
A 32022 single-row metric tapered roller bearing per ISO 355 has a 110 mm bore, 170 mm outer diameter and 38 mm total assembly width (4.331 × 6.693 × 1.496 in), a 30.0 mm radial section and roughly 2558 g geometry-based estimated mass; catalogue masses vary with roller and cage design.
How does the 32022 bore code work?
The last two digits of 32022 are bore code 22, giving 22 × 5 = 110 mm bore — the same convention as 6xx ball bearings, starting at code 04 (20 mm). The 170 mm OD and 38 mm width come from the ISO 355 diameter and width series, not the bore code alone.
What is the cone and cup of 32022?
Tapered roller bearings are separable: the cone is the inner ring with the tapered rollers and cage, the cup is the outer ring. 32022 denotes a matched cone-and-cup set. They are fitted separately — cone pressed on the shaft, cup in the housing — and adjusted against each other.
How is the preload or clearance of 32022 set?
At fit-up the 110 mm-bore cone is tightened against the cup while the hub is rotated, seated, then backed off to the specified end play — a typical starting range of 0.05–0.20 mm for a 110 mm bore — and locked with shims, a locknut or a spacer. Too tight overheats and seizes the rib; too loose causes skid, noise and early wear. Confirm the exact figure in the hub or axle-maker procedure.
Can 32022 take axial load in both directions?
A single 32022 takes thrust in one direction only — the roller large ends bear against the inner-ring rib under load. Bidirectional axial load requires an opposed pair: X (face-to-face) tolerates misalignment slightly better, O (back-to-back) gives a wider load centre and more moment stiffness.
Reviewed & verified by the MPN Base engineering desk against source catalog iso355-geometry on 2026-09-24. Read our editorial & correction policy.