413056UTG bearing: complete specifications & equivalents
The 413056UTG is a ANSI ABMA 19.2 radial bearing sized 280 x 420 x 106 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 280 mm |
| Outer diameter D | 420 mm |
| Width B | 106 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 1140 kN |
| Basic static load rating C0 | 1630 kN |
| Fatigue load limit Pu | 137 kN |
| Limiting speed (mechanical) | 620 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 46000 g |
| Manufacturer designation | NTN 4T-413056UTG |
| 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 | 11.024 in |
|---|---|
| Outer diameter D | 16.535 in |
| Width B | 4.173 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 70 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) | 28 of 41 |
| Bore above smallest 4t-430-series size | 240 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 413056UTG | 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 413056UTG model number is decoded
The NTN 2203E double-row table prints 4T-413056UTG at 280 mm bore, 420 mm OD and 106 mm overall width, with a grease limiting speed of 620 r/min and an oil ceiling of 880 r/min. Unlike a pair of single-row bearings, the TDO unit of 4T-413056UTG integrates both rows in one article: the 106 mm overall width and the internal clearance are ground and set by NTN, so there is no field adjustment dimension. The 4.1 kN of dynamic capacity per millimetre of bore summarises the 1140 kN rating over the 280 mm bore — compare substitution candidates on this ratio and on the 106 mm width. TDO construction means the two cone assemblies of 4T-413056UTG 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 280 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-413056UTG.
Typical equipment & failure modes
Common applications
- mine hoist and dragline drum shafts
- cement-plant mill and kiln drive trains
- port-crane hoist and luffing gearboxes
- heavy press and forging-machine drives
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 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
- At 280 mm bore the 4T-413056UTG unit needs hydraulic or crane-assisted fitting and a verified oil supply; manual methods cannot control seating at the 1140 kN C level.
- The 430 light plan keeps 4T-413056UTG narrower and faster than the 432 heavy execution of the same 280 mm bore; where shock or a high thrust share dominates, verify whether the heavier 432-family row is the intended position.
- Order by the full 413056UTG code including suffixes — U, X, DX, E1 and UTG variants share the 280 mm bore but are different articles with different internal geometry.
- The 1140 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 413056UTG code including suffixes — U, X, DX, E1 and UTG variants share the 280 mm bore but are different articles with different internal geometry.
- The 1140/1630 kN ratings and 137 kN Cu here are NTN Ball and Roller Bearings CAT.No.2203E figures for 4T-413056UTG; 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-413056UTG?
4T-413056UTG is a double-row tapered roller bearing of TDO (back-to-back) construction: 280 mm bore, 420 mm outside diameter and 106 mm overall width. From NTN Ball and Roller Bearings CAT.No.2203E: C 1140 kN, C0 1630 kN, Cu 137 kN, grease limiting speed 620 r/min, oil speed 880 r/min, mass about 46 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 280 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-413056UTG 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-413056UTG 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 106 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 413056UTG mean?
Suffix reading on 413056UTG: UTG marks the ULTAGE specification for large NTN tapered rollers — upgraded material and internal design, printed with the ＊ symbol ahead of the order number; suffixed variants are separate order numbers and are not interchangeable articles.
Why does 4T-413056UTG list two speeds, 620 and 880 r/min?
The lower figure, 620 r/min, is the grease-lubricated limiting speed for the two rows and their cages. With oil lubrication NTN rates 4T-413056UTG at 880 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.