HH221449-HH221410 bearing: complete specifications & equivalents
The HH221449-HH221410 is a ANSI ABMA 19.2 radial bearing sized 101.6 x 190.5 x 57.15 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 101.6 mm |
| Outer diameter D | 190.5 mm |
| Width B | 57.15 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 490 kN |
| Basic static load rating C0 | 610 kN |
| Limiting speed (mechanical) | 1900 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 7070 g |
| Manufacturer designation | NTN 4T-HH221449/HH221410 |
| 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-inch-series range
| Bore d | 4 in |
|---|---|
| Outer diameter D | 7.5 in |
| Width B | 2.25 in |
| ISO bore code | 49 |
| Radial section height (D−d)/2 | 44.5 mm |
| Smallest bore in 4t-inch-series | 12.7 mm |
| Largest outer diameter in 4t-inch-series | 260 mm |
| Width range across 4t-inch-series | 10.998–77.788 mm |
| Bore position in 4t-inch-series (smallest first) | 119 of 148 |
| Bore above smallest 4t-inch-series size | 88.89999999999999 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| HH221449-410 | SKF | full Dimensions and internal design equivalent — standard interchange. | Identical ISO 15 envelope, seal and ratings band — standard interchange; re-verify precision class and clearance per supplier. |
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 HH221449-HH221410 model number is decoded
In NTN Ball and Roller Bearings CAT.No.2203E, the order number 4T-HH221449/HH221410 denotes the extra-heavy HH family of NTN inch tapered roller bearings — cone HH221449 and cup HH221410 delivered as a matched, separable pair of 101.6 mm bore and 190.5 mm outside diameter. Letter prefixes inherited from the inch convention mark the load family: LM reads as light-medium, HM as heavy-medium, LL as extra-light, J-prefixed codes as metric-envelope families — HH221449 sits in the extra-heavy HH family. Contact-angle geometry of the extra-heavy HH family gives 4T-HH221449/HH221410 its radial/axial load split — at 490/610 kN the static rating is about 1.24× C, typical of inch tapered sets proportioned for combined duty. Cup-side note for HH221410: within the extra-heavy HH family tables the HH221449 cone is listed against several cup options, and it is the cup that fixes the 190.5 mm OD and the 57.15 mm assembled width — quote the full HH221449/HH221410 pair, never the cone alone. A single-row tapered bearing reacts thrust in one direction only; 4T-HH221449/HH221410 is adjusted against a second bearing so the shaft is located in both directions.
Typical equipment & failure modes
Common applications
- plant gearboxes on inch-dimensioned shaft lines
- large conveyor head pulleys in bulk-handling plant
- paper-machine and calender roll supports
- off-highway and forestry machine axles
Known failure patterns
- cone-rib and roller large-end smearing when the adjusted pair runs with preload but starved lubricant film
- flaking on one cone only when a bent shaft loads the O/X pair unevenly
- cup creep and housing fretting when the cup seat is cut too loose for the rotating load
- cage damage from a mounting blow transmitted through the roller complement
- brinell marks on cone and cup raceways from impact during handling or hammer fitting
Selection pitfalls — read before you substitute
- Mount the 101.6 mm cone by induction heating (max 120 °C) and the 190.5 mm cup with a press sleeve; at 7070 g a cocked ring brinells the raceway directly.
- The extra-heavy HH family is proportioned for a high thrust share; swapping to a lighter LM or pure-numeric series at the same 101.6 mm bore cuts axial capacity even when the envelope fits — re-verify the load split before downgrading.
- Open 4T-HH221449/HH221410 sets have no seals: a hub or gearbox needs external sealing or the 1,900 r/min grease figure is meaningless once water reaches the cone rib.
- Inch and metric bores collide on paper — 101.6 mm is 4 in, not a round metric size; a metric bearing that seems 0.1 mm off will not seat on the inch shaft.
- Open 4T-HH221449/HH221410 sets have no seals: a hub or gearbox needs external sealing or the 1,900 r/min grease figure is meaningless once water reaches the cone rib.
- The 490/610 kN ratings here are NTN Ball and Roller Bearings CAT.No.2203E figures for 4T-HH221449/HH221410; internal geometry legitimately differs between inch-series makers, so re-verify ratings, adjustment and the exact cone/cup references before substituting another brand on a rated drive.
Frequently asked questions
What are the dimensions and catalogue ratings of NTN 4T-HH221449/HH221410?
4T-HH221449/HH221410 is an inch-series single-row tapered roller bearing to the ABMA boundary plan: 101.6 mm bore (4 in), 190.5 mm outside diameter and 57.15 mm assembled width T (7.5 × 2.25 in). From NTN Ball and Roller Bearings CAT.No.2203E: C 490 kN, C0 610 kN, grease limiting speed 1,900 r/min, oil speed 2,600 r/min, mass about 7070 g. It is an open, separable cone/cup set with a pressed-steel cage.
Are the cone and cup of 4T-HH221449/HH221410 interchangeable separately?
Yes — ABMA inch parts are individually interchangeable: the HH221449 cone or the HH221410 cup can be replaced by an identical reference from NTN or another ABMA-dimensioned maker. Pairing the cone with a different cup reference is a different catalogue row: OD, assembled T and the 490/610 kN ratings change with the cup.
What is the difference between 4T-HH221449/HH221410 and a metric ISO 355 tapered bearing?
4T-HH221449/HH221410 follows the ABMA inch boundary plan with cone/cup references; ISO 355 bearings use metric dimension-series numbers (302, 322, …). Even where a metric size looks close to 101.6×190.5×57.15 mm, the envelopes and contact angles differ — the two systems are not drop-in interchangeable; check every boundary value before substituting.
What does the 4T prefix on 4T-HH221449/HH221410 mean?
4T is NTN's tapered roller bearing quality mark, stamped on cone and cup in the factory. It identifies NTN's 4T programme and is not a dimension or variant code, so interchange lists quote the bare HH221449/HH221410 references; the 4T spelling is retained among this page's search aliases.
Why does 4T-HH221449/HH221410 list two speeds, 1,900 and 2,600 r/min?
The lower figure, 1,900 r/min, is the grease-lubricated limiting speed — the mechanical ceiling for the cage, rollers and cone-rib contact. With oil lubrication NTN rates 4T-HH221449/HH221410 at 2,600 r/min because oil removes rib-contact heat better. Real limits still depend on pair adjustment, oil flow and cooling.
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.