432228XU bearing: complete specifications & equivalents
The 432228XU is a ANSI ABMA 19.2 radial bearing sized 140 x 250 x 153 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 140 mm |
| Outer diameter D | 250 mm |
| Width B | 153 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 1160 kN |
| Basic static load rating C0 | 1840 kN |
| Fatigue load limit Pu | 184 kN |
| Limiting speed (mechanical) | 1200 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 30000 g |
| Manufacturer designation | NTN 4T-432228XU |
| 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 | 5.512 in |
|---|---|
| Outer diameter D | 9.843 in |
| Width B | 6.024 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 55 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) | 18 of 39 |
| Bore above smallest 4t-432-series size | 100 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 432228XU | 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 432228XU model number is decoded
In NTN Ball and Roller Bearings CAT.No.2203E, the order number 4T-432228XU denotes the heavy-duty 432-family TDO double-row series — a 140 mm bore double-row tapered unit rated 1160 kN basic dynamic and 1840 kN static. Reading the designation: the last two digits 28 are the bore code, ×5 = 140 mm (codes 00–03 use the 10/12/15/17 exception table); the leading digits place the bearing in the heavy-duty 432-family TDO double-row series. Catalogue mass of 4T-432228XU is 30 kg; lifting and fitting tackle must be rated for the whole preset unit, not for single-ring handling. Because the unit is preset, mounting 4T-432228XU resembles mounting a double-row spherical or cylindrical bearing: seat the unit, clamp axially to the stated end cover torque, and verify rotation — no end-play measurement is required. Mount 4T-432228XU as one article: lift on the double cup, never on a single cone, or the preset alignment of the two rows is disturbed.
Typical equipment & failure modes
Common applications
- power-plant mill and fan shafts
- rolling-mill roll-neck and pinion-stand positions
- mine hoist and dragline drum shafts
- cement-plant mill and kiln drive trains
Known failure patterns
- roller large-end smearing against the cone ribs when one row of the unit runs starved of lubricant
- one-row flaking when a bent shaft concentrates the combined load on a single row of the pair
- overheated running after a field attempt to "tighten up" the factory-set internal clearance
- cage fatigue after continuous running near the grease limiting speed without oil cooling
- rolling-contact fatigue spalling after the catalogue L10 life at the actual combined load
Selection pitfalls — read before you substitute
- At 140 mm bore the 4T-432228XU unit needs hydraulic or crane-assisted fitting and a verified oil supply; manual methods cannot control seating at the 1160 kN C level.
- The 432 heavy plan gives 4T-432228XU its 153 mm width and 1160 kN rating at the 140 mm bore; do not downgrade to a 430-family unit of the same bore without re-checking C, C0 and the 184 kN Cu.
- Lubricant must reach both rows: a housing groove aligned to the cup mid-width of 4T-432228XU feeds the two roller complements evenly; a single-side feed starves the far row.
- Lubricant must reach both rows: a housing groove aligned to the cup mid-width of 4T-432228XU feeds the two roller complements evenly; a single-side feed starves the far row.
- At inspection do not mix the cone assemblies of 4T-432228XU with another unit; rows are ground together and re-matching is not guaranteed in the field.
- The 1160/1840 kN ratings and 184 kN Cu here are NTN Ball and Roller Bearings CAT.No.2203E figures for 4T-432228XU; 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-432228XU?
4T-432228XU is a double-row tapered roller bearing of TDO (back-to-back) construction: 140 mm bore, 250 mm outside diameter and 153 mm overall width. From NTN Ball and Roller Bearings CAT.No.2203E: C 1160 kN, C0 1840 kN, Cu 184 kN, grease limiting speed 1,200 r/min, oil speed 1,600 r/min, mass about 30 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 140 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-432228XU 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-432228XU 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 153 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 432228XU mean?
Suffix reading on 432228XU: U marks the uprated/reinforced internal design, a separate order number with higher capacity than the basic execution; X marks the boundary-dimension revision of the base number (D and width differ from the plain number of the same bore); suffixed variants are separate order numbers and are not interchangeable articles.
Why does 4T-432228XU list two speeds, 1,200 and 1,600 r/min?
The lower figure, 1,200 r/min, is the grease-lubricated limiting speed for the two rows and their cages. With oil lubrication NTN rates 4T-432228XU at 1,600 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.