432217XU bearing: complete specifications & equivalents
The 432217XU is a ANSI ABMA 19.2 radial bearing sized 85 x 150 x 86 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 85 mm |
| Outer diameter D | 150 mm |
| Width B | 86 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 425 kN |
| Basic static load rating C0 | 600 kN |
| Fatigue load limit Pu | 70 kN |
| Limiting speed (mechanical) | 2000 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 5990 g |
| Manufacturer designation | NTN 4T-432217XU |
| 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 | 3.346 in |
|---|---|
| Outer diameter D | 5.906 in |
| Width B | 3.386 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 32.5 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) | 10 of 39 |
| Bore above smallest 4t-432-series size | 45 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 432217XU | 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 432217XU model number is decoded
In NTN Ball and Roller Bearings CAT.No.2203E, the order number 4T-432217XU denotes the heavy-duty 432-family TDO double-row series — a 85 mm bore double-row tapered unit rated 425 kN basic dynamic and 600 kN static. Reading the designation: the last two digits 17 are the bore code, ×5 = 85 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. Selection: C 425 kN against C0 600 kN gives a C0/C ratio of 1.41; the two rows of 4T-432217XU share the combined load as one bearing position. Because the unit is preset, mounting 4T-432217XU 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. With a rotating shaft a k5/m5 seat on the 85 mm journal and a located cup in the housing are typical practice for 4T-432217XU.
Typical equipment & failure modes
Common applications
- large fan and blower shafts with thrust reversal
- steel-plant roller table and conveyor drives
- marine winch and deck-machinery shafts
- bulk-handling stacker/reclaimer travel drives
Known failure patterns
- edge loading on one row when the housing seats the double cup cocked across its width
- preload loss and hammering noise when the cup clamping loosens and the unit gains axial float
- brinelling of both rows from a mounting blow transmitted through the roller complements
- cage damage when the unit is lifted by one cone instead of the double cup during fitting
- rolling-contact fatigue spalling after the catalogue L10 life at the actual combined load
Selection pitfalls — read before you substitute
- Mount the 85 mm unit by induction heating (max 120 °C); at 5.99 kg a cocked lift damages the cages and ribs before the bearing ever runs.
- The 432 heavy plan gives 4T-432217XU its 86 mm width and 425 kN rating at the 85 mm bore; do not downgrade to a 430-family unit of the same bore without re-checking C, C0 and the 70 kN Cu.
- An unloaded 4T-432217XU near 2,000 r/min lets rollers skid; ensure a minimum load or light spring preload on high-speed positions.
- The 425 kN C already includes two-row load sharing — do not double it when pairing the unit with a floating bearing in the L10 calculation.
- The 425 kN C already includes two-row load sharing — do not double it when pairing the unit with a floating bearing in the L10 calculation.
- The 425/600 kN ratings and 70 kN Cu here are NTN Ball and Roller Bearings CAT.No.2203E figures for 4T-432217XU; 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-432217XU?
4T-432217XU is a double-row tapered roller bearing of TDO (back-to-back) construction: 85 mm bore, 150 mm outside diameter and 86 mm overall width. From NTN Ball and Roller Bearings CAT.No.2203E: C 425 kN, C0 600 kN, Cu 70 kN, grease limiting speed 2,000 r/min, oil speed 2,700 r/min, mass about 5.99 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 85 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-432217XU 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-432217XU 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 86 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 432217XU mean?
Suffix reading on 432217XU: 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-432217XU list two speeds, 2,000 and 2,700 r/min?
The lower figure, 2,000 r/min, is the grease-lubricated limiting speed for the two rows and their cages. With oil lubrication NTN rates 4T-432217XU at 2,700 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.