HH221449A-HH221410 bearing: complete specifications & equivalents
The HH221449A-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 | 7060 g |
| Manufacturer designation | NTN 4T-HH221449A/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 | — |
| 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 |
|---|---|---|---|
| HH221449A | 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 HH221449A-HH221410 model number is decoded
NTN supplies this 4 in (101.6 mm) shaft position as 4T-HH221449A/HH221410: cone HH221449A, cup HH221410, profiled rollers and a pressed-steel cage, rated 490 kN basic dynamic and 610 kN static. Unlike ISO 355 metric numbers, this ABMA code does not encode the bore arithmetically: HH221449A identifies the cone of 101.6 mm (4 in) bore by catalogue lookup, and HH221410 fixes the 190.5 mm OD. Contact-angle geometry of the extra-heavy HH family gives 4T-HH221449A/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. The printed 490/610 kN ratings belong to the assembled HH221449A+HH221410 pair; a sibling row using the same cone with a different cup carries its own rating row because the raceway track shifts with the cup. After bedding-in, re-check the end play of the adjusted 4T-HH221449A/HH221410 pair — initial seating of the ring faces relaxes the setting slightly.
Typical equipment & failure modes
Common applications
- off-highway and forestry machine axles
- marine winch and deck-machinery shafts
- crusher and screening-plant eccentric shafts
- heavy truck and bus drive-axle differentials
Known failure patterns
- rib-face scoring when the thrust share of the combined load exceeds what the cone rib of this size carries
- preload loss and noise after one bearing of the adjusted pair is replaced without resetting end play
- false brinelling on a stationary pair exposed to vibration during transport or standby
- cage fatigue when the pair runs continuously near the grease limiting speed without oil cooling
- indentation of the raceways by hard particles in an open, unsealed arrangement
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 7060 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.
- Quote the full HH221449A/HH221410 pair at ordering: the HH221449A cone also ships against sibling cups, and a cup from another reference changes the 57.15 mm assembled width and the rating.
- Shaft and housing fillets must clear the ring chamfers of HH221449A and HH221410; use undercut shoulders so the rings seat on the face, not on a radius.
- Grease packs must leave free volume inside the 57.15 mm-wide set; over-greasing a pair churning near the oil-band speed of 2,600 r/min raises temperature and destroys the setting.
- The 490/610 kN ratings here are NTN Ball and Roller Bearings CAT.No.2203E figures for 4T-HH221449A/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-HH221449A/HH221410?
4T-HH221449A/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 7060 g. It is an open, separable cone/cup set with a pressed-steel cage.
Are the cone and cup of 4T-HH221449A/HH221410 interchangeable separately?
Yes — ABMA inch parts are individually interchangeable: the HH221449A 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-HH221449A/HH221410 and a metric ISO 355 tapered bearing?
4T-HH221449A/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-HH221449A/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 HH221449A/HH221410 references; the 4T spelling is retained among this page's search aliases.
Why does 4T-HH221449A/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-HH221449A/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.