32922XA bearing: complete specifications & equivalents
The 32922XA is a ISO 355 radial bearing sized 110 x 150 x 25 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 110 mm |
| Outer diameter D | 150 mm |
| Width B | 25 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 141 kN |
| Basic static load rating C0 | 226 kN |
| Fatigue load limit Pu | 25.5 kN |
| Limiting speed (mechanical) | 2200 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 1240 g |
| Manufacturer designation | NTN 32922XA |
| Standard | ISO 355 |
| Catalog version | NTN Ball and Roller Bearings CAT.No.2203E |
| Last verified | 2026-10-01 |
Source: catalog reference (NTN Ball and Roller Bearings CAT.No.2203E) · extracted 2026-10-01
Parameters extracted from the official NTN Ball and Roller Bearings catalogue (NTN Ball and Roller Bearings CAT.No.2203E); NTN® is a trademark of NTN Corporation, used here for identification only — mpnbase is not an authorized NTN distributor. Boundary dimensions are ISO 15 interchangeable; current production values may differ, verify at ntnglobal.com.
Dimensions in inches & 32900-series range
| Bore d | 4.331 in |
|---|---|
| Outer diameter D | 5.906 in |
| Width B | 0.984 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 20 mm |
| Smallest bore in 32900-series | 35 mm |
| Largest outer diameter in 32900-series | 600 mm |
| Width range across 32900-series | 14–100 mm |
| Bore position in 32900-series (smallest first) | 16 of 37 |
| Bore above smallest 32900-series size | 75 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 32922XA | 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 32922XA model number is decoded
The NTN 2203E table prints 32922XA in the extra-light thin-section 32900 family: 110 mm bore, 150 mm cup OD, 25 mm T, with a grease limiting speed of 2,200 r/min and an oil-lubricated ceiling of 2,900 r/min. Reading the designation: the leading five digits follow the ISO 355 metric plan (dimension family plus two-digit bore code), and 32922XA resolves to 110 mm bore; the NTN factory mark 4T is stamped on cone and cup but is a brand mark, not a size code, so the catalogue sku is printed without it. The pressed-steel cage and surface-finished roller ends are standard 4T execution; ULTAGE-marked variants use upgraded material and internal geometry aimed at longer rating life with the same ISO 355 envelope. Selection: C 141 kN against C0 226 kN gives a C0/C ratio of 1.60 for the 110 mm bore, and the equivalent combined load must keep below the rating at the target L10 with the pair counted as one unit. After mounting check the contact pattern with marking blue: a pattern biased to the large or small roller end means the 110 mm pair is misadjusted and the 25 mm T set will edge-load in service.
Typical equipment & failure modes
Common applications
- heavy industrial gearboxes and crane travel drives
- rolling-mill auxiliary and pinion-stand shafts
- large conveyor and bucket-elevator pulleys
- mineral-processing feeder and crusher auxiliaries
Known failure patterns
- cone-raceway spalling at the large rib when preload is set too high for the lubricant film
- preload loss from racewear when one bearing of the paired set is replaced without re-adjusting end play
- rib scoring when axial load is carried beyond the cone rib capacity of the adjusted pair
- pressed-steel cage pocket wear from roller skid at light radial load and high speed
- fretting corrosion on a loose cone seat that creeps under rotating load
Selection pitfalls — read before you substitute
- Mount the 110 mm cone by induction heating (max 120 °C) and the cup with a press sleeve; the 1240 g ring mass makes cocking during fitting a direct raceway-brinelling risk.
- The thin 25 mm section of 32922XA is built for low friction and tight envelopes, not the heavy preload of a 322/323 set; over-tightening adjustment on this 110 mm bore smears the roller ends against the rib.
- ISO 355 makes the 110×150 mm envelope interchangeable but not the ratings: NTN prints 141/226 kN for this execution, and a cheaper same-number part can differ in roller complement and steel.
- The U/UTG/X/C/CA/D suffix variants of a base number share the bore but not the article: ordering 32922XA by size alone can deliver the wrong contact-angle execution for a pinion position.
- Replacing one half of an adjusted pair without resetting end play negates the 25 mm T dimension logic: re-adjust the set and re-verify the contact pattern rather than reusing the old spacer stack.
- The 141/226 kN ratings and 25.5 kN Pu here are NTN Ball and Roller Bearings CAT.No.2203E figures for 32922XA; internal geometry legitimately differs between manufacturers, so re-verify ratings, adjustment and suffix before substituting another make on a rated drive.
Frequently asked questions
What are the dimensions and catalogue ratings of NTN 32922XA?
32922XA is a metric 4T tapered roller bearing to ISO 355: 110 mm bore, 150 mm outside diameter and 25 mm assembled width T (4.331 × 5.906 × 0.984 in). From NTN Ball and Roller Bearings CAT.No.2203E: C 141 kN, C0 226 kN, Pu 25.5 kN, grease limiting speed 2,200 r/min, oil speed 2,900 r/min, mass about 1240 g. It is an open, separable cone/cup bearing with a pressed-steel cage.
What does the 4T prefix mean on 32922XA?
4T is NTN's tapered roller bearing brand mark, stamped on the cone and cup in the factory. It identifies the NTN 4T programme and is not a dimension, so the catalogue and this page list the bare ISO 355 number (32922XA); the lower-case 4t- factory spelling of the code is retained among the search aliases.
How does the 32922XA designation encode the 110 mm bore?
last two digits 22 are the ISO bore code, ×5 = 110 mm (codes 00–03 use the 10/12/15/17 exception table). The 150 mm OD and 25 mm assembled T follow the ISO 355 dimension-series plan.
Why does 32922XA list two speeds, 2,200 and 2,900 r/min?
The lower figure, 2,200 r/min, is the grease-lubricated limiting speed — the mechanical ceiling for the cage, rollers and cone-rib contact. With oil lubrication NTN rates 32922XA at 2,900 r/min because oil removes rib-contact heat better. Real limits still depend on preload, oil flow and cooling.
What does the suffix on 32922XA mean?
Suffix reading on 32922XA: X marks the execution built to the ISO boundary-dimension section (interchangeable envelope, NTN internal geometry); the trailing A/C/D (or E1) letter marks an NTN contact-angle or internal-design revision of the base number, not a seal or clearance code; the suffix is part of the order number and the variants are not interchangeable articles.
Reviewed & verified by the MPN Base engineering desk against source catalog NTN Ball and Roller Bearings CAT.No.2203E on 2026-10-01. Read our editorial & correction policy.