32076UTG bearing: complete specifications & equivalents
The 32076UTG is a ISO 355 radial bearing sized 380 x 560 x 112 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 380 mm |
| Outer diameter D | 560 mm |
| Width B | 112 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 2460 kN |
| Basic static load rating C0 | 3800 kN |
| Fatigue load limit Pu | 292 kN |
| Limiting speed (mechanical) | 520 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 89100 g |
| Manufacturer designation | NTN 32076UTG |
| 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 | 14.961 in |
|---|---|
| Outer diameter D | 22.047 in |
| Width B | 4.409 in |
| ISO bore code | — |
| Radial section height (D−d)/2 | 90 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) | 40 of 43 |
| Bore above smallest 32000-series size | 360 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 32076UTG | 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 32076UTG model number is decoded
32076UTG is the NTN 4T catalogue entry for a 380×560×112 mm metric tapered roller bearing — separable cone and cup, designed for combined radial and axial load as an individually adjusted bearing. Digit by digit, the bare number identifies the low-section 32000 family tuned for low friction and a bore code resolving to 380 mm; 560 mm OD and 112 mm assembled T are the matching ISO 355 boundary dimensions shared with other makers of the same dimension series. The pressed-steel cage and surface-finished roller ends are standard 4T execution; ULTAGE-marked variants use upgraded material and internal geometry aimed at longer rating life with the same ISO 355 envelope. The 90.0 mm section height over the 380 mm bore positions the load centre; axial location of the pair depends on that contact line, so spacer faces must be square within the P0 tolerance of the bearing. Re-adjustment after bedding-in is standard practice: re-check end play once the paired 32076UTG arrangement has run in, because initial seat seating relaxes the set preload slightly.
Typical equipment & failure modes
Common applications
- offshore crane and drawworks drums
- heavy haul railway traction gearboxes
- large marine propulsion reduction gears
- cement-plant kiln and mill drive trains
Known failure patterns
- cup creep and housing fretting when the specified outer-ring press fit is not achieved
- 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
- edge loading when shaft deflection exceeds the few arc-minutes of misalignment the adjusted pair allows
Selection pitfalls — read before you substitute
- At 380 mm bore the 32076UTG 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 2460 kN C level.
- The thin 112 mm section of 32076UTG is built for low friction and tight envelopes, not the heavy preload of a 322/323 set; over-tightening adjustment on this 380 mm bore smears the roller ends against the rib.
- Never fit the 380 mm cone by hammering the 560 mm cup: force for both press fits goes through the ring faces only, or brinell marks release as noise within the first running hours.
- Open 32076UTG units have no seals: a wheel-hub or gearbox application needs external sealing or the 520 r/min grease figure is meaningless once water reaches the cone rib.
- Replacing one half of an adjusted pair without resetting end play negates the 112 mm T dimension logic: re-adjust the set and re-verify the contact pattern rather than reusing the old spacer stack.
- The 2460/3800 kN ratings and 292 kN Pu here are NTN Ball and Roller Bearings CAT.No.2203E figures for 32076UTG; 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 32076UTG?
32076UTG is a metric 4T tapered roller bearing to ISO 355: 380 mm bore, 560 mm outside diameter and 112 mm assembled width T (14.961 × 22.047 × 4.409 in). From NTN Ball and Roller Bearings CAT.No.2203E: C 2460 kN, C0 3800 kN, Pu 292 kN, grease limiting speed 520 r/min, oil speed 740 r/min, mass about 89100 g. It is an open, separable cone/cup bearing with a pressed-steel cage.
What does the 4T prefix mean on 32076UTG?
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 (32076UTG); the lower-case 4t- factory spelling of the code is retained among the search aliases.
How does the 32076UTG designation encode the 380 mm bore?
last two digits 76 are the ISO bore code, ×5 = 380 mm (codes 00–03 use the 10/12/15/17 exception table). The 560 mm OD and 112 mm assembled T follow the ISO 355 dimension-series plan.
Why does 32076UTG list two speeds, 520 and 740 r/min?
The lower figure, 520 r/min, is the grease-lubricated limiting speed — the mechanical ceiling for the cage, rollers and cone-rib contact. With oil lubrication NTN rates 32076UTG at 740 r/min because oil removes rib-contact heat better. Real limits still depend on preload, oil flow and cooling.
What does the suffix on 32076UTG mean?
Suffix reading on 32076UTG: the UTG suffix marks the ULTAGE specification for large NTN tapered rollers — upgraded material and internal design for longer life inside the unchanged ISO 355 envelope; 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.