413188UTG bearing: complete specifications & equivalents
The 413188UTG is a ANSI ABMA 19.2 radial bearing sized 440 x 720 x 226 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 440 mm |
| Outer diameter D | 720 mm |
| Width B | 226 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 5150 kN |
| Basic static load rating C0 | 7800 kN |
| Fatigue load limit Pu | 560 kN |
| Limiting speed (mechanical) | 340 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 330000 g |
| Manufacturer designation | NTN 4T-413188UTG |
| 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 | 17.323 in |
|---|---|
| Outer diameter D | 28.346 in |
| Width B | 8.898 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 140 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) | 36 of 41 |
| Bore above smallest 4t-430-series size | 400 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 413188UTG | 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 413188UTG model number is decoded
In NTN Ball and Roller Bearings CAT.No.2203E, the order number 4T-413188UTG denotes the light-duty 430-family TDO double-row series — a 440 mm bore double-row tapered unit rated 5150 kN basic dynamic and 7800 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 440 mm bore the 432 execution carries a wider, heavier section than the 430. Grease relubrication at the 340 r/min limiting speed must reach both roller rows; sustaining 480 r/min needs an oil supply with defined flow through the double cup. Because the unit is preset, mounting 4T-413188UTG 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. Mount 4T-413188UTG 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
- edge loading on one row when the housing seats the double cup cocked across its width
- brinelling of both rows from a mounting blow transmitted through the roller complements
- preload loss and hammering noise when the cup clamping loosens and the unit gains axial float
- cage fatigue after continuous running near the grease limiting speed without oil cooling
- thermal distress when the oil supply sized for one row starves the second row
Selection pitfalls — read before you substitute
- At 440 mm bore the 4T-413188UTG unit needs hydraulic or crane-assisted fitting and a verified oil supply; manual methods cannot control seating at the 5150 kN C level.
- The 430 light plan keeps 4T-413188UTG narrower and faster than the 432 heavy execution of the same 440 mm bore; where shock or a high thrust share dominates, verify whether the heavier 432-family row is the intended position.
- Never interchange a TDO double-row unit with two single-row bearings of similar size: the 226 mm width, load spread and clearance logic of 4T-413188UTG are unit-specific.
- At inspection do not mix the cone assemblies of 4T-413188UTG with another unit; rows are ground together and re-matching is not guaranteed in the field.
- The 5150 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 5150/7800 kN ratings and 560 kN Cu here are NTN Ball and Roller Bearings CAT.No.2203E figures for 4T-413188UTG; 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-413188UTG?
4T-413188UTG is a double-row tapered roller bearing of TDO (back-to-back) construction: 440 mm bore, 720 mm outside diameter and 226 mm overall width. From NTN Ball and Roller Bearings CAT.No.2203E: C 5150 kN, C0 7800 kN, Cu 560 kN, grease limiting speed 340 r/min, oil speed 480 r/min, mass about 330 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 440 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-413188UTG 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-413188UTG 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 226 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 413188UTG mean?
Suffix reading on 413188UTG: 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-413188UTG list two speeds, 340 and 480 r/min?
The lower figure, 340 r/min, is the grease-lubricated limiting speed for the two rows and their cages. With oil lubrication NTN rates 4T-413188UTG at 480 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.