430220XU bearing: complete specifications & equivalents
The 430220XU is a ANSI ABMA 19.2 radial bearing sized 100 x 180 x 83 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 100 mm |
| Outer diameter D | 180 mm |
| Width B | 83 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 490 kN |
| Basic static load rating C0 | 675 kN |
| Fatigue load limit Pu | 74.5 kN |
| Limiting speed (mechanical) | 1700 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 8270 g |
| Manufacturer designation | NTN 4T-430220XU |
| 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-430-series range
| Bore d | 3.937 in |
|---|---|
| Outer diameter D | 7.087 in |
| Width B | 3.268 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 40 mm |
| Smallest bore in 4t-430-series | 40 mm |
| Largest outer diameter in 4t-430-series | 870 mm |
| Width range across 4t-430-series | 45–310 mm |
| Bore position in 4t-430-series (smallest first) | 13 of 41 |
| Bore above smallest 4t-430-series size | 60 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 430220XU | 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 430220XU model number is decoded
4T-430220XU belongs to the light-duty 430-family TDO double-row series of NTN double-row tapered roller bearings; the unit is mounted as one article and its internal clearance is set at the factory, not on the shaft. The 4T- prefix is NTN's tapered roller quality mark; 430 numbers the light TDO plan and 432 the heavy TDO plan — at the same 100 mm bore the 432 execution carries a wider, heavier section than the 430. The fatigue load limit Cu printed for 4T-430220XU is 74.5 kN — the equivalent-load floor below which high reliability is expected even under contamination in the adjusted-life equation. TDO construction means the two cone assemblies of 4T-430220XU 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 100 mm shaft. Re-lubrication holes and grooves of the housing should line up with the cup's mid-width so fresh grease reaches both roller rows of 4T-430220XU.
Typical equipment & failure modes
Common applications
- crusher and screening-plant main shafts
- large fan and blower shafts with thrust reversal
- steel-plant roller table and conveyor drives
- marine winch and deck-machinery shafts
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
- water-induced pitting when washdown reaches the open unit without external seals
Selection pitfalls — read before you substitute
- Mount the 100 mm unit by induction heating (max 120 °C); at 8.27 kg a cocked lift damages the cages and ribs before the bearing ever runs.
- The 430 light plan keeps 4T-430220XU narrower and faster than the 432 heavy execution of the same 100 mm bore; where shock or a high thrust share dominates, verify whether the heavier 432-family row is the intended position.
- An unloaded 4T-430220XU near 1,700 r/min lets rollers skid; ensure a minimum load or light spring preload on high-speed positions.
- The 490 kN C already includes two-row load sharing — do not double it when pairing the unit with a floating bearing in the L10 calculation.
- Order by the full 430220XU code including suffixes — U, X, DX, E1 and UTG variants share the 100 mm bore but are different articles with different internal geometry.
- The 490/675 kN ratings and 74.5 kN Cu here are NTN Ball and Roller Bearings CAT.No.2203E figures for 4T-430220XU; 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-430220XU?
4T-430220XU is a double-row tapered roller bearing of TDO (back-to-back) construction: 100 mm bore, 180 mm outside diameter and 83 mm overall width. From NTN Ball and Roller Bearings CAT.No.2203E: C 490 kN, C0 675 kN, Cu 74.5 kN, grease limiting speed 1,700 r/min, oil speed 2,200 r/min, mass about 8.27 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 100 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-430220XU belongs to the light-duty 430-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-430220XU 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 83 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 430220XU mean?
Suffix reading on 430220XU: 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-430220XU list two speeds, 1,700 and 2,200 r/min?
The lower figure, 1,700 r/min, is the grease-lubricated limiting speed for the two rows and their cages. With oil lubrication NTN rates 4T-430220XU at 2,200 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.