32322 bearing: complete specifications & equivalents
The 32322 is a ISO 355 radial bearing sized 110 x 240 x 84.5 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 | 240 mm |
| Width B | 84.5 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) | 15408 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 32322 are being backfilled — use the inquiry form for certified values.
Dimensions in inches & 32300-series range
| Bore d | 4.331 in |
|---|---|
| Outer diameter D | 9.449 in |
| Width B | 3.327 in |
| ISO bore code | 22 |
| Radial section height (D−d)/2 | 65 mm |
| Smallest bore in 32300-series | 20 mm |
| Largest outer diameter in 32300-series | 240 mm |
| Width range across 32300-series | 22.25–84.5 mm |
| Bore position in 32300-series (smallest first) | 19 of 19 |
| Bore above smallest 32300-series size | 90 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 32322 | 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 32322 model number is decoded
In the 32300-series the last two digits of 32322 encode the bore: code 22 = 110 mm (code × 5 from 04 upward). The ISO 355 envelope is 240 mm outside diameter and 84.5 mm total assembly width T over the separable cone and cup — 4.331 × 9.449 × 3.327 in, with a 65.0 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
- railway axle boxes
- agricultural tractor axles
- truck and trailer wheel hubs
- heavy final drives and differentials
- large conveyor drum pulleys
Known failure patterns
- cup creep and housing bore fretting when the outer ring is left without its specified press fit
- roller large-end smearing and scoring against the inner-ring guide rib from loss of the EP lubricant film
- 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
Selection pitfalls — read before you substitute
- The large 110 mm-bore 32322 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 323 heavy wide series at 110 mm bore (240×84.5 mm) is a steep-angle, high-thrust row for heavy final drives; its 65.0 mm section and 84.5 mm width dwarf the 30222, and its speed ceiling is the lowest of the four series.
- Before fitting 32322, machine the 110 mm shaft seat and 240 mm housing bore with a relief or small fillet so nothing bridges the bearing chamfer; the 84.5 mm-wide cone and cup only load correctly when the full faces abut, and a large radius pinches the 65.0 mm radial section.
- The 32322 cup drives into the 240 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 84.5 mm load zone.
- Inspect the removed 32322 cone and cup as a pair: pitting on the 240 mm cup with a clean cone usually means seal failure and water ingress, while rib scoring on the 110 mm cone points to wrong preload or lost EP film — the two faults need different corrections.
- The cone and the cup of 32322 are separable: order and fit them as a matched set; never mix a cone from one manufacturer with another brand's cup — roller geometry and contact angle are not identical across brands.
- Set running clearance (or preload) with the shim pack or adjusting nut at fit-up; a 110 mm-bore 32322 that is too tight overheats and scores the rib, one too loose develops end play and noise — follow the torque-and-untighten procedure.
Frequently asked questions
What are the dimensions of a 32322 tapered roller bearing?
A 32322 single-row metric tapered roller bearing per ISO 355 has a 110 mm bore, 240 mm outer diameter and 84.5 mm total assembly width (4.331 × 9.449 × 3.327 in), a 65.0 mm radial section and roughly 15408 g geometry-based estimated mass; catalogue masses vary with roller and cage design.
How does the 32322 bore code work?
The last two digits of 32322 are bore code 22, giving 22 × 5 = 110 mm bore — the same convention as 6xx ball bearings, starting at code 04 (20 mm). The 240 mm OD and 84.5 mm width come from the ISO 355 diameter and width series, not the bore code alone.
What is the cone and cup of 32322?
Tapered roller bearings are separable: the cone is the inner ring with the tapered rollers and cage, the cup is the outer ring. 32322 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 32322 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 32322 take axial load in both directions?
A single 32322 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.