432211U bearing: complete specifications & equivalents
The 432211U is a ANSI ABMA 19.2 radial bearing sized 55 x 100 x 60 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 55 mm |
| Outer diameter D | 100 mm |
| Width B | 60 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 206 kN |
| Basic static load rating C0 | 269 kN |
| Fatigue load limit Pu | 33 kN |
| Limiting speed (mechanical) | 3100 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 1890 g |
| Manufacturer designation | NTN 4T-432211U |
| 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 | 2.165 in |
|---|---|
| Outer diameter D | 3.937 in |
| Width B | 2.362 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 22.5 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) | 4 of 39 |
| Bore above smallest 4t-432-series size | 15 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 432211U | 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 432211U model number is decoded
In NTN Ball and Roller Bearings CAT.No.2203E, the order number 4T-432211U denotes the heavy-duty 432-family TDO double-row series — a 55 mm bore double-row tapered unit rated 206 kN basic dynamic and 269 kN static. Suffix reading on 432211U: 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. Double-row capacity is not twice a single-row bearing: the printed 206 kN C already accounts for load sharing between the two rows of 4T-432211U, so apply it directly in the L10 calculation. TDO construction means the two cone assemblies of 4T-432211U 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 55 mm shaft. Fillet radii and shoulder heights must follow the 2203E mounting table for 4T-432211U; the double cup must seat square across its full 60 mm width.
Typical equipment & failure modes
Common applications
- extruder and mixer drive shafts
- construction-equipment swing and pivot shafts
- industrial gearbox shafts in a single locating position
- rolling-mill work-roll and backup auxiliary positions
Known failure patterns
- edge loading on one row when the housing seats the double cup cocked across its width
- 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
- Gearbox positions of this 55 mm class rely on the preset clearance of 4T-432211U; shimming or nut-tightening the unit like a single-row pair overruns the factory setting and runs the rows hot.
- The 432 heavy plan gives 4T-432211U its 60 mm width and 206 kN rating at the 55 mm bore; do not downgrade to a 430-family unit of the same bore without re-checking C, C0 and the 33 kN Cu.
- Order by the full 432211U code including suffixes — U, X, DX, E1 and UTG variants share the 55 mm bore but are different articles with different internal geometry.
- The 206 kN C already includes two-row load sharing — do not double it when pairing the unit with a floating bearing in the L10 calculation.
- Clamping the double cup with a cocked end cover pinches one row: tighten the 100 mm OD clamping uniformly around the circumference.
- The 206/269 kN ratings and 33 kN Cu here are NTN Ball and Roller Bearings CAT.No.2203E figures for 4T-432211U; 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-432211U?
4T-432211U is a double-row tapered roller bearing of TDO (back-to-back) construction: 55 mm bore, 100 mm outside diameter and 60 mm overall width. From NTN Ball and Roller Bearings CAT.No.2203E: C 206 kN, C0 269 kN, Cu 33 kN, grease limiting speed 3,100 r/min, oil speed 4,100 r/min, mass about 1.89 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 55 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-432211U 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-432211U 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 60 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 432211U mean?
Suffix reading on 432211U: 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-432211U list two speeds, 3,100 and 4,100 r/min?
The lower figure, 3,100 r/min, is the grease-lubricated limiting speed for the two rows and their cages. With oil lubrication NTN rates 4T-432211U at 4,100 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.