32919XU bearing: complete specifications & equivalents
The 32919XU is a ISO 355 radial bearing sized 95 x 130 x 23 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 95 mm |
| Outer diameter D | 130 mm |
| Width B | 23 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 112 kN |
| Basic static load rating C0 | 178 kN |
| Fatigue load limit Pu | 21 kN |
| Limiting speed (mechanical) | 2500 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 851 g |
| Manufacturer designation | NTN 32919XU |
| 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 | 3.74 in |
|---|---|
| Outer diameter D | 5.118 in |
| Width B | 0.906 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 17.5 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) | 13 of 37 |
| Bore above smallest 32900-series size | 60 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 32919XU | 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 32919XU model number is decoded
32919XU is a metric single-row tapered roller bearing in the NTN 4T programme: a pressed-steel cage guides profiled rollers between a separable cone and cup on the 95×130 mm ISO 355 envelope, with 23 mm overall assembled width T. On the NTN nameplate the parts carry 4T plus the bare code, while 2203E orders 32919XU by the metric ISO 355 number (ISO series abbreviation 2BC): 95 mm bore, 130 mm OD. The rollers run with their large ends against the cone's integral guide rib; the rib/end-flange contact carries the thrust component and is the reason lubricant must reach the rib face of 32919XU, not only the raceway. Grease relubrication at 2,500 r/min limiting speed targets the rib contact; if the drive needs 3,400 r/min it must be arranged for oil lubrication with a defined flow to the large roller ends. Re-adjustment after bedding-in is standard practice: re-check end play once the paired 32919XU arrangement has run in, because initial seat seating relaxes the set preload slightly.
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
- rib scoring when axial load is carried beyond the cone rib capacity of the adjusted pair
- preload loss from racewear when one bearing of the paired set is replaced without re-adjusting end play
- 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 95 mm cone by induction heating (max 120 °C) and the cup with a press sleeve; the 851 g ring mass makes cocking during fitting a direct raceway-brinelling risk.
- The thin 23 mm section of 32919XU is built for low friction and tight envelopes, not the heavy preload of a 322/323 set; over-tightening adjustment on this 95 mm bore smears the roller ends against the rib.
- ISO 355 makes the 95×130 mm envelope interchangeable but not the ratings: NTN prints 112/178 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 32919XU by size alone can deliver the wrong contact-angle execution for a pinion position.
- Back-to-back and face-to-face arrangements react differently to shaft bending: pick the pair orientation for the moment load before locking the 95 mm shoulder geometry, because retrofitting flips the cups.
- The 112/178 kN ratings and 21 kN Pu here are NTN Ball and Roller Bearings CAT.No.2203E figures for 32919XU (ISO 355 2BC); 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 32919XU?
32919XU is a metric 4T tapered roller bearing to ISO 355: 95 mm bore, 130 mm outside diameter and 23 mm assembled width T (3.74 × 5.118 × 0.906 in). From NTN Ball and Roller Bearings CAT.No.2203E: C 112 kN, C0 178 kN, Pu 21 kN, grease limiting speed 2,500 r/min, oil speed 3,400 r/min, mass about 851 g. It is an open, separable cone/cup bearing with a pressed-steel cage.
What does the 4T prefix mean on 32919XU?
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 (32919XU); the lower-case 4t- factory spelling of the code is retained among the search aliases.
How does the 32919XU designation encode the 95 mm bore and what is 2BC?
last two digits 19 are the ISO bore code, ×5 = 95 mm (codes 00–03 use the 10/12/15/17 exception table). The 130 mm OD and 23 mm assembled T follow the ISO 355 dimension-series plan. 2BC is the maker-neutral ISO 355 abbreviation for this dimension series (the same code other manufacturers print); 4T is NTN's own brand mark.
Why does 32919XU list two speeds, 2,500 and 3,400 r/min?
The lower figure, 2,500 r/min, is the grease-lubricated limiting speed — the mechanical ceiling for the cage, rollers and cone-rib contact. With oil lubrication NTN rates 32919XU at 3,400 r/min because oil removes rib-contact heat better. Real limits still depend on preload, oil flow and cooling.
What does the suffix on 32919XU mean?
Suffix reading on 32919XU: XU combines the X ISO boundary section with the U uprated internal design; U marks the reinforced/uprated internal design of the bare number, a separate order number with higher load capacity than the basic execution; 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.