432234XUUTG bearing: complete specifications & equivalents
The 432234XUUTG is a ANSI ABMA 19.2 radial bearing sized 170 x 310 x 192 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 170 mm |
| Outer diameter D | 310 mm |
| Width B | 192 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 2190 kN |
| Basic static load rating C0 | 3200 kN |
| Fatigue load limit Pu | 300 kN |
| Limiting speed (mechanical) | 950 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 61300 g |
| Manufacturer designation | NTN 4T-432234XUUTG |
| 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 | 6.693 in |
|---|---|
| Outer diameter D | 12.205 in |
| Width B | 7.559 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 70 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) | 21 of 39 |
| Bore above smallest 4t-432-series size | 130 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 432234XUUTG | 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 432234XUUTG model number is decoded
4T-432234XUUTG is the NTN 4T catalogue entry for a 170×310×192 mm double-row tapered roller bearing — the TDO arrangement reacts radial load plus thrust in both directions without a second bearing. Suffix reading on 432234XUUTG: UTG marks the ULTAGE specification for large NTN tapered rollers — upgraded material and internal design, printed with the ＊ symbol ahead of the order number; 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. Catalogue mass of 4T-432234XUUTG is 61.3 kg; lifting and fitting tackle must be rated for the whole preset unit, not for single-ring handling. The internal clearance of 4T-432234XUUTG is set at the factory by the double cup and spacer-less grinding; do not attempt to re-adjust it with shaft nuts — the 192 mm overall width is the finished dimension. Fillet radii and shoulder heights must follow the 2203E mounting table for 4T-432234XUUTG; the double cup must seat square across its full 192 mm width.
Typical equipment & failure modes
Common applications
- port-crane hoist and luffing gearboxes
- heavy press and forging-machine drives
- large shredder and recycler main shafts
- power-plant mill and fan shafts
Known failure patterns
- edge loading on one row when the housing seats the double cup cocked across its width
- 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 damage when the unit is lifted by one cone instead of the double cup during fitting
- indentation of both raceways by hard particles in an open, unsealed arrangement
Selection pitfalls — read before you substitute
- At 170 mm bore the 4T-432234XUUTG unit needs hydraulic or crane-assisted fitting and a verified oil supply; manual methods cannot control seating at the 2190 kN C level.
- The 432 heavy plan gives 4T-432234XUUTG its 192 mm width and 2190 kN rating at the 170 mm bore; do not downgrade to a 430-family unit of the same bore without re-checking C, C0 and the 300 kN Cu.
- Never interchange a TDO double-row unit with two single-row bearings of similar size: the 192 mm width, load spread and clearance logic of 4T-432234XUUTG are unit-specific.
- Never interchange a TDO double-row unit with two single-row bearings of similar size: the 192 mm width, load spread and clearance logic of 4T-432234XUUTG are unit-specific.
- The 70.0 mm section leaves little room for oversized shaft fillets; follow the 2203E chamfer table for 4T-432234XUUTG or the cones bottom out on the radius.
- The 2190/3200 kN ratings and 300 kN Cu here are NTN Ball and Roller Bearings CAT.No.2203E figures for 4T-432234XUUTG; 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-432234XUUTG?
4T-432234XUUTG is a double-row tapered roller bearing of TDO (back-to-back) construction: 170 mm bore, 310 mm outside diameter and 192 mm overall width. From NTN Ball and Roller Bearings CAT.No.2203E: C 2190 kN, C0 3200 kN, Cu 300 kN, grease limiting speed 950 r/min, oil speed 1,400 r/min, mass about 61.3 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 170 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-432234XUUTG 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-432234XUUTG 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 192 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 432234XUUTG mean?
Suffix reading on 432234XUUTG: UTG marks the ULTAGE specification for large NTN tapered rollers — upgraded material and internal design, printed with the ＊ symbol ahead of the order number; 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-432234XUUTG list two speeds, 950 and 1,400 r/min?
The lower figure, 950 r/min, is the grease-lubricated limiting speed for the two rows and their cages. With oil lubrication NTN rates 4T-432234XUUTG at 1,400 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.