32222 bearing: complete specifications & equivalents
The 32222 is a ISO 355 radial bearing sized 110 x 200 x 56 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 | 200 mm |
| Width B | 56 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) | 6261 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 32222 are being backfilled — use the inquiry form for certified values.
Dimensions in inches & 32200-series range
| Bore d | 4.331 in |
|---|---|
| Outer diameter D | 7.874 in |
| Width B | 2.205 in |
| ISO bore code | 22 |
| Radial section height (D−d)/2 | 45 mm |
| Smallest bore in 32200-series | 20 mm |
| Largest outer diameter in 32200-series | 200 mm |
| Width range across 32200-series | 19–56 mm |
| Bore position in 32200-series (smallest first) | 19 of 19 |
| Bore above smallest 32200-series size | 90 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 32222 | 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 32222 model number is decoded
In the 32200-series the last two digits of 32222 encode the bore: code 22 = 110 mm (code × 5 from 04 upward). The ISO 355 envelope is 200 mm outside diameter and 56 mm total assembly width T over the separable cone and cup — 4.331 × 7.874 × 2.205 in, with a 45.0 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
- large conveyor drum pulleys
- crane travel wheels and winch drums
- railway axle boxes
- agricultural tractor axles
- truck and trailer wheel hubs
Known failure patterns
- 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
- fretting corrosion on a loose shaft seat when the cone is pressed to an interference that relaxes with wear
- 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
Selection pitfalls — read before you substitute
- The large 110 mm-bore 32222 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 322 medium series at 110 mm bore (200×56 mm) gains roller length and load over the 30222 on the same OD; the wider 56 mm assembly needs a wider housing shoulder and changes the pinion offset in a differential.
- Before fitting 32222, machine the 110 mm shaft seat and 200 mm housing bore with a relief or small fillet so nothing bridges the bearing chamfer; the 56 mm-wide cone and cup only load correctly when the full faces abut, and a large radius pinches the 45.0 mm radial section.
- The 32222 cup drives into the 200 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 56 mm load zone.
- Relubrication for 32222 must reach the rib-roller end contact, not just the 110 mm bore; in a hub repack, work EP grease through the roller set until it exudes at both faces of the 56 mm-wide assembly or the sliding rib contact starves first.
- A single 32222 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 322-series pair adjusted against each other.
- The cone and the cup of 32222 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.
Frequently asked questions
What are the dimensions of a 32222 tapered roller bearing?
A 32222 single-row metric tapered roller bearing per ISO 355 has a 110 mm bore, 200 mm outer diameter and 56 mm total assembly width (4.331 × 7.874 × 2.205 in), a 45.0 mm radial section and roughly 6261 g geometry-based estimated mass; catalogue masses vary with roller and cage design.
How does the 32222 bore code work?
The last two digits of 32222 are bore code 22, giving 22 × 5 = 110 mm bore — the same convention as 6xx ball bearings, starting at code 04 (20 mm). The 200 mm OD and 56 mm width come from the ISO 355 diameter and width series, not the bore code alone.
What is the cone and cup of 32222?
Tapered roller bearings are separable: the cone is the inner ring with the tapered rollers and cage, the cup is the outer ring. 32222 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 32222 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 32222 take axial load in both directions?
A single 32222 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.