32060XUUTG bearing: complete specifications & equivalents
The 32060XUUTG is a ISO 355 radial bearing sized 300 x 460 x 100 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 300 mm |
| Outer diameter D | 460 mm |
| Width B | 100 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 1920 kN |
| Basic static load rating C0 | 2830 kN |
| Fatigue load limit Pu | 232 kN |
| Limiting speed (mechanical) | 680 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 57200 g |
| Manufacturer designation | NTN 32060XUUTG |
| Standard | ISO 355 |
| Catalog version | NTN Ball and Roller Bearings CAT.No.2203E |
| Last verified | 2026-10-01 |
Source: catalog reference (NTN Ball and Roller Bearings CAT.No.2203E) · extracted 2026-10-01
Parameters extracted from the official NTN Ball and Roller Bearings catalogue (NTN Ball and Roller Bearings CAT.No.2203E); 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 & 32000-series range
| Bore d | 11.811 in |
|---|---|
| Outer diameter D | 18.11 in |
| Width B | 3.937 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 80 mm |
| Smallest bore in 32000-series | 20 mm |
| Largest outer diameter in 32000-series | 650 mm |
| Width range across 32000-series | 15–130 mm |
| Bore position in 32000-series (smallest first) | 36 of 43 |
| Bore above smallest 32000-series size | 280 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 32060XUUTG | 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 32060XUUTG model number is decoded
For a 300 mm shaft with a thrust component, NTN lists 32060XUUTG, a metric 4T tapered roller bearing of 1920 kN C and 2830 kN C0 inside the 460 mm OD, 100 mm-wide assembled set. On the NTN nameplate the parts carry 4T plus the bare code, while 2203E orders 32060XUUTG by the metric ISO 355 number (ISO series abbreviation 4GD): 300 mm bore, 460 mm OD. Suffix reading on 32060XUUTG: the XUUTG suffix marks the ULTAGE specification for large NTN tapered rollers — upgraded material and internal design for longer life inside the unchanged ISO 355 envelope; XU combines the X ISO boundary section with the U uprated internal design; the suffix is part of the order number and the variants are not interchangeable articles. Catalogue mass of the 32060XUUTG set is 57200 g (2.252 lb cone + cup); abutment and shaft shoulder design must carry that mass square to the axis. Fillet radii must clear the ring chamfers of the 460 mm cup and 300 mm cone; use undercut shoulders so the rings seat fully rather than bridging on a shaft radius.
Typical equipment & failure modes
Common applications
- heavy haul railway traction gearboxes
- large marine propulsion reduction gears
- cement-plant kiln and mill drive trains
- rolling-mill roll-neck and gearbox positions
Known failure patterns
- cone-raceway spalling at the large rib when preload is set too high for the lubricant film
- smearing on the roller large ends and cone rib after a dry start with preload but no oil film
- flaking on one cone only when a back-to-back / face-to-face pair is loaded unevenly by a bent shaft
- cage damage from a mounting blow delivered through the roller complement instead of the ring face
- fretting corrosion on a loose cone seat that creeps under rotating load
Selection pitfalls — read before you substitute
- At 300 mm bore the 32060XUUTG set is adjusted with hydraulic nuts on large mill and wind positions; follow the drive-up angle/end-play procedure, because manual torque methods cannot control preload at the 1920 kN C level.
- The thin 100 mm section of 32060XUUTG is built for low friction and tight envelopes, not the heavy preload of a 322/323 set; over-tightening adjustment on this 300 mm bore smears the roller ends against the rib.
- Replacing one half of an adjusted pair without resetting end play negates the 100 mm T dimension logic: re-adjust the set and re-verify the contact pattern rather than reusing the old spacer stack.
- Open 32060XUUTG units have no seals: a wheel-hub or gearbox application needs external sealing or the 680 r/min grease figure is meaningless once water reaches the cone rib.
- ISO 355 makes the 300×460 mm envelope interchangeable but not the ratings: NTN prints 1920/2830 kN for this execution, and a cheaper same-number part can differ in roller complement and steel.
- The 1920/2830 kN ratings and 232 kN Pu here are NTN Ball and Roller Bearings CAT.No.2203E figures for 32060XUUTG (ISO 355 4GD); internal geometry legitimately differs between manufacturers, so re-verify ratings, adjustment and suffix before substituting another make on a rated drive.
Frequently asked questions
What are the dimensions and catalogue ratings of NTN 32060XUUTG?
32060XUUTG is a metric 4T tapered roller bearing to ISO 355: 300 mm bore, 460 mm outside diameter and 100 mm assembled width T (11.811 × 18.11 × 3.937 in). From NTN Ball and Roller Bearings CAT.No.2203E: C 1920 kN, C0 2830 kN, Pu 232 kN, grease limiting speed 680 r/min, oil speed 960 r/min, mass about 57200 g. It is an open, separable cone/cup bearing with a pressed-steel cage.
What does the 4T prefix mean on 32060XUUTG?
4T is NTN's tapered roller bearing brand mark, stamped on the cone and cup in the factory. It identifies the NTN 4T programme and is not a dimension, so the catalogue and this page list the bare ISO 355 number (32060XUUTG); the lower-case 4t- factory spelling of the code is retained among the search aliases.
How does the 32060XUUTG designation encode the 300 mm bore and what is 4GD?
last two digits 60 are the ISO bore code, ×5 = 300 mm (codes 00–03 use the 10/12/15/17 exception table). The 460 mm OD and 100 mm assembled T follow the ISO 355 dimension-series plan. 4GD is the maker-neutral ISO 355 abbreviation for this dimension series (the same code other manufacturers print); 4T is NTN's own brand mark.
Why does 32060XUUTG list two speeds, 680 and 960 r/min?
The lower figure, 680 r/min, is the grease-lubricated limiting speed — the mechanical ceiling for the cage, rollers and cone-rib contact. With oil lubrication NTN rates 32060XUUTG at 960 r/min because oil removes rib-contact heat better. Real limits still depend on preload, oil flow and cooling.
What does the suffix on 32060XUUTG mean?
Suffix reading on 32060XUUTG: the XUUTG suffix marks the ULTAGE specification for large NTN tapered rollers — upgraded material and internal design for longer life inside the unchanged ISO 355 envelope; XU combines the X ISO boundary section with the U uprated internal design; the suffix is part of the order number and the variants are not interchangeable articles.
Reviewed & verified by the MPN Base engineering desk against source catalog NTN Ball and Roller Bearings CAT.No.2203E on 2026-10-01. Read our editorial & correction policy.