HM516442-HM516410 bearing: complete specifications & equivalents
The HM516442-HM516410 is a ANSI ABMA 19.2 radial bearing sized 76.2 x 133.35 x 39.688 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 76.2 mm |
| Outer diameter D | 133.35 mm |
| Width B | 39.688 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 196 kN |
| Basic static load rating C0 | 305 kN |
| Limiting speed (mechanical) | 2600 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 2430 g |
| Manufacturer designation | NTN 4T-HM516442/HM516410 |
| 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 | 3 in |
|---|---|
| Outer diameter D | 5.25 in |
| Width B | 1.563 in |
| ISO bore code | 42 |
| Radial section height (D−d)/2 | 28.6 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) | 94 of 148 |
| Bore above smallest 4t-inch-series size | 63.5 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| HM516442 | 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 HM516442-HM516410 model number is decoded
4T-HM516442/HM516410 is an NTN inch-series single-row tapered roller bearing: a separable cone-and-cup pair on the ABMA inch boundary plan, 76.2×133.35×39.688 mm (assembled width T), for a shaft of about 76.2 mm (3 in). 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 — HM516442 sits in the heavy-medium HM family. Speed planning uses both catalogue columns: grease 2,600 r/min is the mechanical ceiling for 4T-HM516442/HM516410, oil 3,500 r/min with circulating oil — a 900 r/min margin at this size. Cup-side note for HM516410: within the heavy-medium HM family tables the HM516442 cone is listed against several cup options, and it is the cup that fixes the 133.35 mm OD and the 39.688 mm assembled width — quote the full HM516442/HM516410 pair, never the cone alone. Minimum load matters at speed: an unloaded 4T-HM516442/HM516410 run near 2,600 r/min lets the rollers skid; lightly spring-preload high-speed pair arrangements.
Typical equipment & failure modes
Common applications
- crusher and screening-plant eccentric shafts
- heavy truck and bus drive-axle differentials
- plant gearboxes on inch-dimensioned shaft lines
- large conveyor head pulleys in bulk-handling plant
Known failure patterns
- cone-rib and roller large-end smearing when the adjusted pair runs with preload but starved lubricant film
- cup creep and housing fretting when the cup seat is cut too loose for the rotating load
- flaking on one cone only when a bent shaft loads the O/X pair unevenly
- pressed-steel cage pocket wear from roller skid at light radial load and high speed
- brinell marks on cone and cup raceways from impact during handling or hammer fitting
Selection pitfalls — read before you substitute
- Mount the 76.2 mm cone by induction heating (max 120 °C) and the 133.35 mm cup with a press sleeve; at 2430 g a cocked ring brinells the raceway directly.
- The heavy-medium HM family is proportioned for a high thrust share; swapping to a lighter LM or pure-numeric series at the same 76.2 mm bore cuts axial capacity even when the envelope fits — re-verify the load split before downgrading.
- Open 4T-HM516442/HM516410 sets have no seals: a hub or gearbox needs external sealing or the 2,600 r/min grease figure is meaningless once water reaches the cone rib.
- Quote the full HM516442/HM516410 pair at ordering: the HM516442 cone also ships against sibling cups, and a cup from another reference changes the 39.688 mm assembled width and the rating.
- ABMA makes the 76.2×133.35 mm envelope interchangeable, not the ratings: NTN prints 196/305 kN for this execution and another make of the same number can differ in roller complement.
- The 196/305 kN ratings here are NTN Ball and Roller Bearings CAT.No.2203E figures for 4T-HM516442/HM516410; 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-HM516442/HM516410?
4T-HM516442/HM516410 is an inch-series single-row tapered roller bearing to the ABMA boundary plan: 76.2 mm bore (3 in), 133.35 mm outside diameter and 39.688 mm assembled width T (5.25 × 1.563 in). From NTN Ball and Roller Bearings CAT.No.2203E: C 196 kN, C0 305 kN, grease limiting speed 2,600 r/min, oil speed 3,500 r/min, mass about 2430 g. It is an open, separable cone/cup set with a pressed-steel cage.
Are the cone and cup of 4T-HM516442/HM516410 interchangeable separately?
Yes — ABMA inch parts are individually interchangeable: the HM516442 cone or the HM516410 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 196/305 kN ratings change with the cup.
What is the difference between 4T-HM516442/HM516410 and a metric ISO 355 tapered bearing?
4T-HM516442/HM516410 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 76.2×133.35×39.688 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-HM516442/HM516410 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 HM516442/HM516410 references; the 4T spelling is retained among this page's search aliases.
Why does 4T-HM516442/HM516410 list two speeds, 2,600 and 3,500 r/min?
The lower figure, 2,600 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-HM516442/HM516410 at 3,500 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.