H924045-H924010 bearing: complete specifications & equivalents
The H924045-H924010 is a ANSI ABMA 19.2 radial bearing sized 111.125 x 214.312 x 55.562 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 111.125 mm |
| Outer diameter D | 214.312 mm |
| Width B | 55.562 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 450 kN |
| Basic static load rating C0 | 560 kN |
| Limiting speed (mechanical) | 1500 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 8470 g |
| Manufacturer designation | NTN 4T-H924045/H924010 |
| 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 | 4.375 in |
|---|---|
| Outer diameter D | 8.437 in |
| Width B | 2.187 in |
| ISO bore code | 45 |
| Radial section height (D−d)/2 | 51.6 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) | 126 of 148 |
| Bore above smallest 4t-inch-series size | 98.425 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| H924045 | 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 H924045-H924010 model number is decoded
For an inch shaft of 111.125 mm carrying combined radial and thrust load, NTN lists 4T-H924045/H924010, a single-row 4T tapered roller set of 450 kN C and 560 kN C0 inside the 214.312 mm OD cup. 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 — H924045 sits in the heavy H family. The 4.0 kN of dynamic capacity per millimetre of bore summarises the 450 kN rating over the 111.125 mm bore — sanity-check any interchange candidate against this ratio and the 55.562 mm T. The printed 450/560 kN ratings belong to the assembled H924045+H924010 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. The rollers run with their large ends against the cone's guide rib; lubricant must reach that rib face of 4T-H924045/H924010, not only the raceway, or the pair smears on the first overloaded start.
Typical equipment & failure modes
Common applications
- rolling-mill pinion stands and roll-neck auxiliaries
- mine hoist and dragline drum shafts
- heavy press and forging-machine drive shafts
- port-crane travel and hoist gearboxes
Known failure patterns
- cone-rib and roller large-end smearing when the adjusted pair runs with preload but starved lubricant film
- 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
- At 111.125 mm bore the 4T-H924045/H924010 set is adjusted with hydraulic nuts or measured shims on mill and crane positions; manual torque methods cannot control preload at the 450 kN C level.
- The heavy H family at 111.125 mm bore (214.312×55.562 mm assembled) is one of several inch families sharing similar bores; cross-series swaps change OD, T and contact angle, so match the full H924045/H924010 reference at purchase.
- Do not confuse T (55.562 mm, the assembled cone-plus-cup width) with the cone width when drawing spacers; an abutment sized to T leaves the cup unseated.
- Grease packs must leave free volume inside the 55.562 mm-wide set; over-greasing a pair churning near the oil-band speed of 2,000 r/min raises temperature and destroys the setting.
- Grease packs must leave free volume inside the 55.562 mm-wide set; over-greasing a pair churning near the oil-band speed of 2,000 r/min raises temperature and destroys the setting.
- The 450/560 kN ratings here are NTN Ball and Roller Bearings CAT.No.2203E figures for 4T-H924045/H924010; 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-H924045/H924010?
4T-H924045/H924010 is an inch-series single-row tapered roller bearing to the ABMA boundary plan: 111.125 mm bore (4.375 in), 214.312 mm outside diameter and 55.562 mm assembled width T (8.437 × 2.187 in). From NTN Ball and Roller Bearings CAT.No.2203E: C 450 kN, C0 560 kN, grease limiting speed 1,500 r/min, oil speed 2,000 r/min, mass about 8470 g. It is an open, separable cone/cup set with a pressed-steel cage.
Are the cone and cup of 4T-H924045/H924010 interchangeable separately?
Yes — ABMA inch parts are individually interchangeable: the H924045 cone or the H924010 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 450/560 kN ratings change with the cup.
What is the difference between 4T-H924045/H924010 and a metric ISO 355 tapered bearing?
4T-H924045/H924010 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 111.125×214.312×55.562 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-H924045/H924010 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 H924045/H924010 references; the 4T spelling is retained among this page's search aliases.
Why does 4T-H924045/H924010 list two speeds, 1,500 and 2,000 r/min?
The lower figure, 1,500 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-H924045/H924010 at 2,000 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.