432236UUTG bearing: complete specifications & equivalents
The 432236UUTG is a ANSI ABMA 19.2 radial bearing sized 180 x 320 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 | 180 mm |
| Outer diameter D | 320 mm |
| Width B | 192 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 2260 kN |
| Basic static load rating C0 | 3350 kN |
| Fatigue load limit Pu | 315 kN |
| Limiting speed (mechanical) | 890 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 63800 g |
| Manufacturer designation | NTN 4T-432236UUTG |
| 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 | 7.087 in |
|---|---|
| Outer diameter D | 12.598 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) | 22 of 39 |
| Bore above smallest 4t-432-series size | 140 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 432236UUTG | 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 432236UUTG model number is decoded
For a 180 mm shaft needing a compact two-direction thrust location, NTN lists 4T-432236UUTG, a TDO double-row 4T unit of 2260 kN C and 3350 kN C0 in the heavy-duty 432-family TDO double-row series. Suffix reading on 432236UUTG: 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; suffixed variants are separate order numbers and are not interchangeable articles. The 70.0 mm radial section over the 180 mm bore carries two roller rows across the 192 mm width; abutment shoulders must clear both cone bores and the double-cup OD. Because the unit is preset, mounting 4T-432236UUTG 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. Do not separate the cones from the double cup at inspection unless re-matching is guaranteed — the rows of 4T-432236UUTG are ground as a unit.
Typical equipment & failure modes
Common applications
- rolling-mill roll-neck and pinion-stand positions
- mine hoist and dragline drum shafts
- cement-plant mill and kiln drive trains
- port-crane hoist and luffing gearboxes
Known failure patterns
- roller large-end smearing against the cone ribs when one row of the unit runs starved of lubricant
- overheated running after a field attempt to "tighten up" the factory-set internal clearance
- one-row flaking when a bent shaft concentrates the combined load on a single row of the pair
- pressed-steel cage pocket wear from roller skid at light load and high speed
- thermal distress when the oil supply sized for one row starves the second row
Selection pitfalls — read before you substitute
- At 180 mm bore the 4T-432236UUTG unit needs hydraulic or crane-assisted fitting and a verified oil supply; manual methods cannot control seating at the 2260 kN C level.
- The 432 heavy plan gives 4T-432236UUTG its 192 mm width and 2260 kN rating at the 180 mm bore; do not downgrade to a 430-family unit of the same bore without re-checking C, C0 and the 315 kN Cu.
- Clamping the double cup with a cocked end cover pinches one row: tighten the 320 mm OD clamping uniformly around the circumference.
- The internal clearance of 4T-432236UUTG is factory-set: no end-play adjustment exists at mounting, and any attempt to set preload with a shaft nut overloads one row.
- Grease packs must leave free volume across the 192 mm width; over-greasing a unit churning near the 1,300 r/min oil-band speed raises temperature and expels the grease.
- The 2260/3350 kN ratings and 315 kN Cu here are NTN Ball and Roller Bearings CAT.No.2203E figures for 4T-432236UUTG; 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-432236UUTG?
4T-432236UUTG is a double-row tapered roller bearing of TDO (back-to-back) construction: 180 mm bore, 320 mm outside diameter and 192 mm overall width. From NTN Ball and Roller Bearings CAT.No.2203E: C 2260 kN, C0 3350 kN, Cu 315 kN, grease limiting speed 890 r/min, oil speed 1,300 r/min, mass about 63.8 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 180 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-432236UUTG 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-432236UUTG 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 432236UUTG mean?
Suffix reading on 432236UUTG: 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; suffixed variants are separate order numbers and are not interchangeable articles.
Why does 4T-432236UUTG list two speeds, 890 and 1,300 r/min?
The lower figure, 890 r/min, is the grease-lubricated limiting speed for the two rows and their cages. With oil lubrication NTN rates 4T-432236UUTG at 1,300 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.