413068UTG bearing: complete specifications & equivalents
The 413068UTG is a ANSI ABMA 19.2 radial bearing sized 340 x 520 x 133 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 340 mm |
| Outer diameter D | 520 mm |
| Width B | 133 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 1890 kN |
| Basic static load rating C0 | 2870 kN |
| Fatigue load limit Pu | 226 kN |
| Limiting speed (mechanical) | 500 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 93100 g |
| Manufacturer designation | NTN 4T-413068UTG |
| 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 | 13.386 in |
|---|---|
| Outer diameter D | 20.472 in |
| Width B | 5.236 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 90 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) | 31 of 41 |
| Bore above smallest 4t-430-series size | 300 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 413068UTG | 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 413068UTG model number is decoded
In NTN Ball and Roller Bearings CAT.No.2203E, the order number 4T-413068UTG denotes the light-duty 430-family TDO double-row series — a 340 mm bore double-row tapered unit rated 1890 kN basic dynamic and 2870 kN static. 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 340 mm bore the 432 execution carries a wider, heavier section than the 430. Selection: C 1890 kN against C0 2870 kN gives a C0/C ratio of 1.52; the two rows of 4T-413068UTG share the combined load as one bearing position. The internal clearance of 4T-413068UTG is set at the factory by the double cup and spacer-less grinding; do not attempt to re-adjust it with shaft nuts — the 133 mm overall width is the finished dimension. Mount 4T-413068UTG as one article: lift on the double cup, never on a single cone, or the preset alignment of the two rows is disturbed.
Typical equipment & failure modes
Common applications
- cement-plant mill and kiln drive trains
- port-crane hoist and luffing gearboxes
- heavy press and forging-machine drives
- large shredder and recycler main 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 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 340 mm bore the 4T-413068UTG unit needs hydraulic or crane-assisted fitting and a verified oil supply; manual methods cannot control seating at the 1890 kN C level.
- The 430 light plan keeps 4T-413068UTG narrower and faster than the 432 heavy execution of the same 340 mm bore; where shock or a high thrust share dominates, verify whether the heavier 432-family row is the intended position.
- The 90.0 mm section leaves little room for oversized shaft fillets; follow the 2203E chamfer table for 4T-413068UTG or the cones bottom out on the radius.
- The 90.0 mm section leaves little room for oversized shaft fillets; follow the 2203E chamfer table for 4T-413068UTG or the cones bottom out on the radius.
- The 90.0 mm section leaves little room for oversized shaft fillets; follow the 2203E chamfer table for 4T-413068UTG or the cones bottom out on the radius.
- The 1890/2870 kN ratings and 226 kN Cu here are NTN Ball and Roller Bearings CAT.No.2203E figures for 4T-413068UTG; 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-413068UTG?
4T-413068UTG is a double-row tapered roller bearing of TDO (back-to-back) construction: 340 mm bore, 520 mm outside diameter and 133 mm overall width. From NTN Ball and Roller Bearings CAT.No.2203E: C 1890 kN, C0 2870 kN, Cu 226 kN, grease limiting speed 500 r/min, oil speed 700 r/min, mass about 93.1 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 340 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-413068UTG 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-413068UTG 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 133 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 413068UTG mean?
Suffix reading on 413068UTG: 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-413068UTG list two speeds, 500 and 700 r/min?
The lower figure, 500 r/min, is the grease-lubricated limiting speed for the two rows and their cages. With oil lubrication NTN rates 4T-413068UTG at 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.