460-453X bearing: complete specifications & equivalents
The 460-453X is a ANSI ABMA 19.2 radial bearing sized 44.45 x 104.775 x 30.162 mm (bore x OD x width). Verify dimensions against the official catalog before ordering.
Specification table
| Parameter | Value |
|---|---|
| Brand | NTN |
| Bore diameter d | 44.45 mm |
| Outer diameter D | 104.775 mm |
| Width B | 30.162 mm |
| Material | GCr15 |
| Seal / shield | open |
| Internal clearance | CN |
| Tolerance class | P0 |
| Cage | steel |
| Basic dynamic load rating C | 127 kN |
| Basic static load rating C0 | 148 kN |
| Limiting speed (mechanical) | 3500 rpm |
| Operating temperature | -40 to +120 °C |
| Mass | 1290 g |
| Manufacturer designation | NTN 4T-460/453X |
| 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 | 1.75 in |
|---|---|
| Outer diameter D | 4.125 in |
| Width B | 1.187 in |
| ISO bore code | 60 |
| Radial section height (D−d)/2 | 30.2 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) | 51 of 148 |
| Bore above smallest 4t-inch-series size | 31.750000000000004 mm |
Cross references & equivalents
| Equivalent model | Brand | Match level | Note |
|---|---|---|---|
| 460 | 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 460-453X model number is decoded
NTN supplies this 1.75 in (44.45 mm) shaft position as 4T-460/453X: cone 460, cup 453X, profiled rollers and a pressed-steel cage, rated 127 kN basic dynamic and 148 kN static. Cone and cup of 4T-460/453X are separately stocked parts: a worn 453X cup can be replaced against the existing 460 cone, provided the new cup carries the identical reference — pairing across references changes the 30.162 mm assembled width and the rating. The 2.9 kN of dynamic capacity per millimetre of bore summarises the 127 kN rating over the 44.45 mm bore — sanity-check any interchange candidate against this ratio and the 30.162 mm T. Housing fitment sequence for 4T-460/453X: press the 453X cup square into the 104.775 mm seat first, then bring the 460 cone (on its 44.45 mm shaft) into adjustment — the two references are separate engineering parts that happen to ship as one set. Minimum load matters at speed: an unloaded 4T-460/453X run near 3,500 r/min lets the rollers skid; lightly spring-preload high-speed pair arrangements.
Typical equipment & failure modes
Common applications
- machine-tool headstocks on inch spindles
- pump and blower drive shafts with combined load
- truck and trailer axle hubs on inch-dimensioned axles
- agricultural tractor transmission and PTO shafts
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
- pressed-steel cage pocket wear from roller skid at light radial load and high speed
- edge loading when shaft deflection exceeds the few arc-minutes an adjusted pair tolerates
Selection pitfalls — read before you substitute
- Hub and pinion positions of this 44.45 mm class are adjusted in pairs; verify end play against the axle or gearbox drawing and re-torque after bedding-in instead of trusting the first setting on 4T-460/453X.
- The pure-numeric inch family at 44.45 mm bore (104.775×30.162 mm assembled) is one of several inch families sharing similar bores; cross-series swaps change OD, T and contact angle, so match the full 460/453X reference at purchase.
- An unloaded 4T-460/453X near 3,500 r/min lets rollers skid and smear the cone rib; spring-preload lightly loaded high-speed pairs.
- Quote the full 460/453X pair at ordering: the 460 cone also ships against sibling cups, and a cup from another reference changes the 30.162 mm assembled width and the rating.
- ABMA makes the 44.45×104.775 mm envelope interchangeable, not the ratings: NTN prints 127/148 kN for this execution and another make of the same number can differ in roller complement.
- The 127/148 kN ratings here are NTN Ball and Roller Bearings CAT.No.2203E figures for 4T-460/453X; 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-460/453X?
4T-460/453X is an inch-series single-row tapered roller bearing to the ABMA boundary plan: 44.45 mm bore (1.75 in), 104.775 mm outside diameter and 30.162 mm assembled width T (4.125 × 1.187 in). From NTN Ball and Roller Bearings CAT.No.2203E: C 127 kN, C0 148 kN, grease limiting speed 3,500 r/min, oil speed 4,700 r/min, mass about 1290 g. It is an open, separable cone/cup set with a pressed-steel cage.
Are the cone and cup of 4T-460/453X interchangeable separately?
Yes — ABMA inch parts are individually interchangeable: the 460 cone or the 453X 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 127/148 kN ratings change with the cup.
What is the difference between 4T-460/453X and a metric ISO 355 tapered bearing?
4T-460/453X 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 44.45×104.775×30.162 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-460/453X 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 460/453X references; the 4T spelling is retained among this page's search aliases.
Why does 4T-460/453X list two speeds, 3,500 and 4,700 r/min?
The lower figure, 3,500 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-460/453X at 4,700 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.