32019XU bearing: complete specifications & equivalents
The 32019XU is a ISO 355 radial bearing sized 95 x 145 x 32 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 | 145 mm |
| Width B | 32 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 190 kN |
| Basic static load rating C0 | 280 kN |
| Fatigue load limit Pu | 32.5 kN |
| Limiting speed (mechanical) | 2300 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 1850 g |
| Manufacturer designation | NTN 32019XU |
| 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 & 32000-series range
| Bore d | 3.74 in |
|---|---|
| Outer diameter D | 5.709 in |
| Width B | 1.26 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 25 mm |
| Smallest bore in 32000-series | 20 mm |
| Largest outer diameter in 32000-series | 650 mm |
| Width range across 32000-series | 15–130 mm |
| Bore position in 32000-series (smallest first) | 19 of 43 |
| Bore above smallest 32000-series size | 75 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 32019XU | 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 32019XU model number is decoded
The NTN 2203E table prints 32019XU in the low-section 32000 family tuned for low friction: 95 mm bore, 145 mm cup OD, 32 mm T, with a grease limiting speed of 2,300 r/min and an oil-lubricated ceiling of 3,100 r/min. Digit by digit, the bare number identifies the low-section 32000 family tuned for low friction and a bore code resolving to 95 mm; 145 mm OD and 32 mm assembled T are the matching ISO 355 boundary dimensions shared with other makers of the same dimension series. The 25.0 mm radial section carries the roller complement across the 95–145 mm envelope; section and contact angle differ between NTN metric families even at the same bore, so 302/322/323 are not drop-in swaps. Speed planning uses both catalogue columns: grease 2,300 r/min is the cage/rib mechanical ceiling for 32019XU, oil 3,100 r/min is available with circulating oil — a 800 r/min margin at this size. Fillet radii must clear the ring chamfers of the 145 mm cup and 95 mm cone; use undercut shoulders so the rings seat fully rather than bridging on a shaft radius.
Typical equipment & failure modes
Common applications
- rolling-mill auxiliary and pinion-stand shafts
- large conveyor and bucket-elevator pulleys
- mineral-processing feeder and crusher auxiliaries
- marine winch and deck-machinery shafts
Known failure patterns
- cup creep and housing fretting when the specified outer-ring press fit is not achieved
- smearing on the roller large ends and cone rib after a dry start with preload but no oil film
- flaking on one cone only when a back-to-back / face-to-face pair is loaded unevenly by a bent shaft
- pressed-steel cage pocket wear from roller skid at light radial load and high speed
- brinell marks on cone and cup raceways from impact during handling or hammering during fitting
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 1850 g ring mass makes cocking during fitting a direct raceway-brinelling risk.
- The thin 32 mm section of 32019XU 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 95×145 mm envelope interchangeable but not the ratings: NTN prints 190/280 kN for this execution, and a cheaper same-number part can differ in roller complement and steel.
- ISO 355 makes the 95×145 mm envelope interchangeable but not the ratings: NTN prints 190/280 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 32019XU by size alone can deliver the wrong contact-angle execution for a pinion position.
- The 190/280 kN ratings and 32.5 kN Pu here are NTN Ball and Roller Bearings CAT.No.2203E figures for 32019XU (ISO 355 4CC); 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 32019XU?
32019XU is a metric 4T tapered roller bearing to ISO 355: 95 mm bore, 145 mm outside diameter and 32 mm assembled width T (3.74 × 5.709 × 1.26 in). From NTN Ball and Roller Bearings CAT.No.2203E: C 190 kN, C0 280 kN, Pu 32.5 kN, grease limiting speed 2,300 r/min, oil speed 3,100 r/min, mass about 1850 g. It is an open, separable cone/cup bearing with a pressed-steel cage.
What does the 4T prefix mean on 32019XU?
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 (32019XU); the lower-case 4t- factory spelling of the code is retained among the search aliases.
How does the 32019XU designation encode the 95 mm bore and what is 4CC?
last two digits 19 are the ISO bore code, ×5 = 95 mm (codes 00–03 use the 10/12/15/17 exception table). The 145 mm OD and 32 mm assembled T follow the ISO 355 dimension-series plan. 4CC 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 32019XU list two speeds, 2,300 and 3,100 r/min?
The lower figure, 2,300 r/min, is the grease-lubricated limiting speed — the mechanical ceiling for the cage, rollers and cone-rib contact. With oil lubrication NTN rates 32019XU at 3,100 r/min because oil removes rib-contact heat better. Real limits still depend on preload, oil flow and cooling.
What does the suffix on 32019XU mean?
Suffix reading on 32019XU: 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.