432319U bearing: complete specifications & equivalents
The 432319U is a ANSI ABMA 19.2 radial bearing sized 95 x 200 x 151 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 | 200 mm |
| Width B | 151 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 955 kN |
| Basic static load rating C0 | 1340 kN |
| Fatigue load limit Pu | 146 kN |
| Limiting speed (mechanical) | 1600 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 21000 g |
| Manufacturer designation | NTN 4T-432319U |
| Standard | ANSI ABMA 19.2 |
| Catalog version | NTN 2203E 2026-09-25 |
| Last verified | 2026-10-01 |
Source: catalog reference (NTN 2203E 2026-09-25) · extracted 2026-10-01
Parameters extracted from the official NTN Ball and Roller Bearings catalogue (NTN 2203E 2026-09-25); 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 & 4t-432-series range
| Bore d | 3.74 in |
|---|---|
| Outer diameter D | 7.874 in |
| Width B | 5.945 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 52.5 mm |
| Smallest bore in 4t-432-series | 40 mm |
| Largest outer diameter in 4t-432-series | 790 mm |
| Width range across 4t-432-series | 46–266 mm |
| Bore position in 4t-432-series (smallest first) | 12 of 39 |
| Bore above smallest 4t-432-series size | 55 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 432319U | 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 432319U model number is decoded
NTN supplies this 95 mm shaft position as 4T-432319U: a factory-adjusted double-row tapered roller bearing whose two roller rows share one double cup, overall width 151 mm. Unlike a pair of single-row bearings, the TDO unit of 4T-432319U integrates both rows in one article: the 151 mm overall width and the internal clearance are ground and set by NTN, so there is no field adjustment dimension. Grease relubrication at the 1,600 r/min limiting speed must reach both roller rows; sustaining 2,100 r/min needs an oil supply with defined flow through the double cup. TDO construction means the two cone assemblies of 4T-432319U face away from each other inside one double cup: the load lines diverge outward, giving a wide effective spread and high moment stiffness for the 95 mm shaft. The preset clearance suits the standard temperature range; unusual thermal gradients between shaft and housing call for a clearance review against the 95 mm size before ordering 4T-432319U.
Typical equipment & failure modes
Common applications
- bulk-handling stacker/reclaimer travel drives
- large mixer and agitator shafts
- heavy gearbox and mill drive shafts
- crusher and screening-plant main shafts
Known failure patterns
- roller large-end smearing against the cone ribs when one row of the unit runs starved of lubricant
- brinelling of both rows from a mounting blow transmitted through the roller complements
- preload loss and hammering noise when the cup clamping loosens and the unit gains axial float
- pressed-steel cage pocket wear from roller skid at light load and high speed
- water-induced pitting when washdown reaches the open unit without external seals
Selection pitfalls — read before you substitute
- Mount the 95 mm unit by induction heating (max 120 °C); at 21 kg a cocked lift damages the cages and ribs before the bearing ever runs.
- The 432 heavy plan gives 4T-432319U its 151 mm width and 955 kN rating at the 95 mm bore; do not downgrade to a 430-family unit of the same bore without re-checking C, C0 and the 146 kN Cu.
- The internal clearance of 4T-432319U is factory-set: no end-play adjustment exists at mounting, and any attempt to set preload with a shaft nut overloads one row.
- Clamping the double cup with a cocked end cover pinches one row: tighten the 200 mm OD clamping uniformly around the circumference.
- The internal clearance of 4T-432319U is factory-set: no end-play adjustment exists at mounting, and any attempt to set preload with a shaft nut overloads one row.
- The 955/1340 kN ratings and 146 kN Cu here are NTN Ball and Roller Bearings CAT.No.2203E figures for 4T-432319U; internal geometry legitimately differs between manufacturers, so re-verify ratings, clearance class and suffix before substituting another make on a rated drive.
Frequently asked questions
What are the dimensions and catalogue ratings of NTN 4T-432319U?
4T-432319U is a double-row tapered roller bearing of TDO (back-to-back) construction: 95 mm bore, 200 mm outside diameter and 151 mm overall width. From NTN Ball and Roller Bearings CAT.No.2203E: C 955 kN, C0 1340 kN, Cu 146 kN, grease limiting speed 1,600 r/min, oil speed 2,100 r/min, mass about 21 kg. It is an open, preset-clearance unit with pressed-steel cages.
What is the difference between the NTN 430 and 432 double-row series at 95 mm bore?
Both are TDO double-row tapered roller units, but 430 is the light plan and 432 the heavy plan: at the same bore the 432 execution is wider and heavier with higher load ratings. 4T-432319U belongs to the heavy-duty 432-family TDO double-row series. Large sizes continue the plans as 4130/4131/4230/4231 (430 family) and 3230/3231 (432 family).
Can the internal clearance of 4T-432319U be adjusted at mounting?
No. The TDO unit — two cone assemblies against one double cup — is ground and set by NTN at the factory, and the 151 mm overall width is the finished dimension. Mounting sets no end play: seat the unit square, clamp the cup uniformly and verify free rotation. Field re-adjustment overloads one row.
What do the suffix letters on 432319U mean?
Suffix reading on 432319U: U marks the uprated/reinforced internal design, a separate order number with higher capacity than the basic execution; suffixed variants are separate order numbers and are not interchangeable articles.
Why does 4T-432319U list two speeds, 1,600 and 2,100 r/min?
The lower figure, 1,600 r/min, is the grease-lubricated limiting speed for the two rows and their cages. With oil lubrication NTN rates 4T-432319U at 2,100 r/min because oil removes heat from both roller rows better — the housing feed must reach both rows through the double cup.
Reviewed & verified by the MPN Base engineering desk against source catalog NTN 2203E 2026-09-25 on 2026-10-01. Read our editorial & correction policy.